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486958 Arrokoth, the Glossary

486958 Arrokoth (provisional designation; formerly nicknamed Ultima Thule) is a trans-Neptunian object located in the Kuiper belt.^[1]

178 relations: Absorption band, Absorption spectroscopy, Accretion (astrophysics), Acetylene, Albedo, Algonquian languages, American Astronomical Society, Ammonia, Ancient Greek literature, Angular momentum, Applied Physics Laboratory, Apsis, Arcus (planetary geology), Aspect ratio, Astrometry, Astronomical unit, Avalanche, Axial tilt, Barycenter (astronomy), Bengali language, Bond albedo, Cartography, Centaur (small Solar System body), Centrifugal force, Chinese Academy of Sciences, Chord (astronomy), Christchurch, Chubut Province, Classical Kuiper belt object, Comet, Contact binary (small Solar System body), Cosmic ray, Deep Ecliptic Survey, Degree (angle), Depression (geology), Digital image processing, Distant minor planet, Division for Planetary Sciences, Drag (physics), Earth, Ecliptic, Ethane, European Space Agency, Formaldehyde, Formation and evolution of the Solar System, Fumarole mineral, Gaia (spacecraft), Geology, Geometric albedo, Hill, ... Expand index (128 more) »
2019 in spaceflight
Cold classical Kuiper belt objects
Discoveries by Marc Buie
Discoveries by the Hubble Space Telescope
Discoveries by the New Horizons KBO Search
Minor planets visited by spacecraft
New Horizons

Absorption band

In quantum mechanics, an absorption band is a range of wavelengths, frequencies or energies in the electromagnetic spectrum that are characteristic of a particular transition from initial to final state in a substance.

See 486958 Arrokoth and Absorption band

Absorption spectroscopy

Absorption spectroscopy is spectroscopy that involves techniques that measure the absorption of electromagnetic radiation, as a function of frequency or wavelength, due to its interaction with a sample.

See 486958 Arrokoth and Absorption spectroscopy

Accretion (astrophysics)

In astrophysics, accretion is the accumulation of particles into a massive object by gravitationally attracting more matter, typically gaseous matter, into an accretion disk.

See 486958 Arrokoth and Accretion (astrophysics)

Acetylene

Acetylene (systematic name: ethyne) is the chemical compound with the formula and structure.

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Albedo

Albedo is the fraction of sunlight that is diffusely reflected by a body.

See 486958 Arrokoth and Albedo

Algonquian languages

The Algonquian languages (also Algonkian) are a subfamily of the Indigenous languages of the Americas and most of the languages in the Algic language family are included in the group.

See 486958 Arrokoth and Algonquian languages

American Astronomical Society

The American Astronomical Society (AAS, sometimes spoken as "double-A-S") is an American society of professional astronomers and other interested individuals, headquartered in Washington, DC.

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Ammonia

Ammonia is an inorganic chemical compound of nitrogen and hydrogen with the formula.

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Ancient Greek literature

Ancient Greek literature is literature written in the Ancient Greek language from the earliest texts until the time of the Byzantine Empire.

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Angular momentum

Angular momentum (sometimes called moment of momentum or rotational momentum) is the rotational analog of linear momentum.

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Applied Physics Laboratory

The Johns Hopkins University Applied Physics Laboratory (or simply Applied Physics Laboratory, or APL) is a not-for-profit university-affiliated research center (UARC) in Howard County, Maryland.

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Apsis

An apsis is the farthest or nearest point in the orbit of a planetary body about its primary body.

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Arcus (planetary geology)

In planetary geology, an arcus (pl. arcũs) is an arc-shaped type of landform.

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Aspect ratio

The aspect ratio of a geometric shape is the ratio of its sizes in different dimensions.

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Astrometry

Astrometry is a branch of astronomy that involves precise measurements of the positions and movements of stars and other celestial bodies.

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Astronomical unit

The astronomical unit (symbol: au, or AU) is a unit of length defined to be exactly equal to.

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Avalanche

An avalanche is a rapid flow of snow down a slope, such as a hill or mountain.

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Axial tilt

In astronomy, axial tilt, also known as obliquity, is the angle between an object's rotational axis and its orbital axis, which is the line perpendicular to its orbital plane; equivalently, it is the angle between its equatorial plane and orbital plane.

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Barycenter (astronomy)

In astronomy, the barycenter (or barycentre) is the center of mass of two or more bodies that orbit one another and is the point about which the bodies orbit.

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Bengali language

Bengali, also known by its endonym Bangla (বাংলা), is an Indo-Aryan language from the Indo-European language family native to the Bengal region of South Asia.

See 486958 Arrokoth and Bengali language

Bond albedo

The Bond albedo (also called spheric albedo, planetary albedo, and bolometric albedo), named after the American astronomer George Phillips Bond (1825–1865), who originally proposed it, is the fraction of power in the total electromagnetic radiation incident on an astronomical body that is scattered back out into space.

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Cartography

Cartography (from χάρτης chartēs, 'papyrus, sheet of paper, map'; and γράφειν graphein, 'write') is the study and practice of making and using maps.

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Centaur (small Solar System body)

In planetary astronomy, a centaur is a small Solar System body that orbits the Sun between Jupiter and Neptune and crosses the orbits of one or more of the giant planets.

See 486958 Arrokoth and Centaur (small Solar System body)

Centrifugal force

Centrifugal force is a fictitious force in Newtonian mechanics (also called an "inertial" or "pseudo" force) that appears to act on all objects when viewed in a rotating frame of reference.

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Chinese Academy of Sciences

The Chinese Academy of Sciences (CAS) is the national academy for natural sciences and the highest consultancy for science and technology of the People's Republic of China.

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Chord (astronomy)

In the field of astronomy the term chord typically refers to a line crossing an object which is formed during an occultation event.

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Christchurch

Christchurch (Ōtautahi) is the largest city in the South Island and the second-largest city by urban area population in New Zealand, after Auckland.

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Chubut Province

Chubut (Provincia del Chubut,; Talaith Chubut) is a province in southern Argentina, situated between the 42nd parallel south (the border with Río Negro Province), the 46th parallel south (bordering Santa Cruz Province), the Andes range to the west, and the Atlantic Ocean to the east.

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Classical Kuiper belt object

A classical Kuiper belt object, also called a cubewano ("QB1-o"), is a low-eccentricity Kuiper belt object (KBO) that orbits beyond Neptune and is not controlled by an orbital resonance with Neptune.

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Comet

A comet is an icy, small Solar System body that warms and begins to release gases when passing close to the Sun, a process called outgassing.

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Contact binary (small Solar System body)

A contact binary is a small Solar System body, such as a minor planet or comet, that is composed of two bodies that have gravitated toward each other until they touch, resulting in a bilobated, peanut-like overall shape.

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Cosmic ray

Cosmic rays or astroparticles are high-energy particles or clusters of particles (primarily represented by protons or atomic nuclei) that move through space at nearly the speed of light.

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Deep Ecliptic Survey

The Deep Ecliptic Survey (DES) is a project to find Kuiper belt objects (KBOs), using the facilities of the National Optical Astronomy Observatory (NOAO).

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Degree (angle)

A degree (in full, a degree of arc, arc degree, or arcdegree), usually denoted by ° (the degree symbol), is a measurement of a plane angle in which one full rotation is 360 degrees.

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Depression (geology)

In geology, a depression is a landform sunken or depressed below the surrounding area.

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Digital image processing

Digital image processing is the use of a digital computer to process digital images through an algorithm.

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Distant minor planet

A distant minor planet, or distant object, is any minor planet found beyond Jupiter in the outer Solar System that is not commonly thought of as an "asteroid".

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Division for Planetary Sciences

The Division for Planetary Sciences (DPS) is a division within the American Astronomical Society (AAS) devoted to Solar System research.

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Drag (physics)

In fluid dynamics, drag, sometimes referred to as fluid resistance, is a force acting opposite to the relative motion of any object, moving with respect to a surrounding fluid.

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Earth

Earth is the third planet from the Sun and the only astronomical object known to harbor life.

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Ecliptic

The ecliptic or ecliptic plane is the orbital plane of Earth around the Sun.

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Ethane

Ethane is a naturally occurring organic chemical compound with chemical formula.

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European Space Agency

The European Space Agency (ESA) is a 22-member intergovernmental body devoted to space exploration.

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Formaldehyde

Formaldehyde (systematic name methanal) is an organic compound with the chemical formula and structure, more precisely.

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Formation and evolution of the Solar System

There is evidence that the formation of the Solar System began about 4.6 billion years ago with the gravitational collapse of a small part of a giant molecular cloud.

See 486958 Arrokoth and Formation and evolution of the Solar System

Fumarole mineral

Fumarole minerals (or fumarolic minerals) are minerals which are deposited by fumarole exhalations.

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Gaia (spacecraft)

Gaia is a space observatory of the European Space Agency (ESA), launched in 2013 and expected to operate until 2025.

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Geology

Geology is a branch of natural science concerned with the Earth and other astronomical objects, the rocks of which they are composed, and the processes by which they change over time.

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Geometric albedo

In astronomy, the geometric albedo of a celestial body is the ratio of its actual brightness as seen from the light source (i.e. at zero phase angle) to that of an idealized flat, fully reflecting, diffusively scattering (Lambertian) disk with the same cross-section.

See 486958 Arrokoth and Geometric albedo

Hill

A hill is a landform that extends above the surrounding terrain.

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Hill sphere

The Hill sphere is a common model for the calculation of a gravitational sphere of influence.

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Hubble Space Telescope

The Hubble Space Telescope (often referred to as HST or Hubble) is a space telescope that was launched into low Earth orbit in 1990 and remains in operation.

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Hydrogen

Hydrogen is a chemical element; it has symbol H and atomic number 1.

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Hydrogen cyanide

Hydrogen cyanide (formerly known as prussic acid) is a chemical compound with the formula HCN and structural formula. It is a highly toxic and flammable liquid that boils slightly above room temperature, at. HCN is produced on an industrial scale and is a highly valued precursor to many chemical compounds ranging from polymers to pharmaceuticals.

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Hydrogen sulfide

Hydrogen sulfide is a chemical compound with the formula.

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Impact event

An impact event is a collision between astronomical objects causing measurable effects.

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Infrared

Infrared (IR; sometimes called infrared light) is electromagnetic radiation (EMR) with wavelengths longer than that of visible light but shorter than microwaves.

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International Astronomical Union

The International Astronomical Union (IAU; Union astronomique internationale, UAI) is an international non-governmental organization (INGO) with the objective of advancing astronomy in all aspects, including promoting astronomical research, outreach, education, and development through global cooperation.

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Jet Propulsion Laboratory

Jet Propulsion Laboratory (JPL) is a Federally Funded Research and Development Center (FFRDC) in La Cañada Flintridge, California, Crescenta Valley, United States.

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JPL Small-Body Database

The JPL Small-Body Database (SBDB) is an astronomy database about small Solar System bodies.

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Julian day

The Julian day is the continuous count of days since the beginning of the Julian period, and is used primarily by astronomers, and in software for easily calculating elapsed days between two events (e.g. food production date and sell by date).

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Julian year (astronomy)

In astronomy, a Julian year (symbol: a or aj) is a unit of measurement of time defined as exactly 365.25 days of SI seconds each.

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Jupiter

Jupiter is the fifth planet from the Sun and the largest in the Solar System.

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Kelvin

The kelvin, symbol K, is the base unit of measurement for temperature in the International System of Units (SI).

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Kuiper belt

The Kuiper belt is a circumstellar disc in the outer Solar System, extending from the orbit of Neptune at 30 astronomical units (AU) to approximately 50 AU from the Sun.

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Lag deposit

A lag deposit is the deposition of material winnowed by physical action.

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Latin literature

Latin literature includes the essays, histories, poems, plays, and other writings written in the Latin language.

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Light curve

In astronomy, a light curve is a graph of the light intensity of a celestial object or region as a function of time, typically with the magnitude of light received on the y-axis and with time on the x-axis.

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Lineation (geology)

Lineations in structural geology are linear structural features within rocks.

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List of minor planets and comets visited by spacecraft

The following tables list all minor planets and comets that have been visited by robotic spacecraft. 486958 Arrokoth and list of minor planets and comets visited by spacecraft are minor planets visited by spacecraft.

See 486958 Arrokoth and List of minor planets and comets visited by spacecraft

List of trans-Neptunian objects

This is a list of trans-Neptunian objects (TNOs), which are minor planets in the Solar System that orbit the Sun at a greater distance on average than Neptune, that is, their orbit has a semi-major axis greater than 30.1 astronomical units (AU).

See 486958 Arrokoth and List of trans-Neptunian objects

Long Range Reconnaissance Imager

Long Range Reconnaissance Imager (LORRI) is a telescope aboard the New Horizons spacecraft for imaging. 486958 Arrokoth and Long Range Reconnaissance Imager are new Horizons.

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Lunar and Planetary Institute

The Lunar and Planetary Institute (LPI) is a scientific research institute dedicated to study of the solar system, its formation, evolution, and current state.

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Macromolecule

A macromolecule is a very large molecule important to biological processes, such as a protein or nucleic acid.

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Magnitude (astronomy)

In astronomy, magnitude is measure of the brightness of an object, usually in a defined passband.

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Mapuche language

Mapuche (from mapu 'land' and che 'people', meaning 'the people of the land') or Mapudungun (from mapu 'land' and dungun 'speak, speech', meaning 'the speech of the land'; also spelled Mapuzugun and Mapudungu) is an Araucanian language related to Huilliche spoken in south-central Chile and west-central Argentina by the Mapuche people.

See 486958 Arrokoth and Mapuche language

Marc Buie

Marc William Buie (born September 17, 1958) is an American astronomer and prolific discoverer of minor planets who works at the Southwest Research Institute in Boulder, Colorado in the Space Science Department. 486958 Arrokoth and Marc Buie are Discoveries by Marc Buie and new Horizons.

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Max Planck Institute for Solar System Research

The Max Planck Institute for Solar System Research (abbreviation: MPS; Max-Planck-Institut für Sonnensystemforschung) is a research institute in astronomy and astrophysics located in Göttingen, Germany, where it relocated in February 2014 from the nearby village of Lindau.

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Methanol

Methanol (also called methyl alcohol and wood spirit, amongst other names) is an organic chemical compound and the simplest aliphatic alcohol, with the chemical formula (a methyl group linked to a hydroxyl group, often abbreviated as MeOH).

See 486958 Arrokoth and Methanol

Micrometre

The micrometre (Commonwealth English) as used by the International Bureau of Weights and Measures; SI symbol: μm) or micrometer (American English), also commonly known by the non-SI term micron, is a unit of length in the International System of Units (SI) equalling (SI standard prefix "micro-".

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Minimum orbit intersection distance

Minimum orbit intersection distance (MOID) is a measure used in astronomy to assess potential close approaches and collision risks between astronomical objects.

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Minor planet

According to the International Astronomical Union (IAU), a minor planet is an astronomical object in direct orbit around the Sun that is exclusively classified as neither a planet nor a comet.

See 486958 Arrokoth and Minor planet

Minor Planet Center

The Minor Planet Center (MPC) is the official body for observing and reporting on minor planets under the auspices of the International Astronomical Union (IAU).

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Minor-planet designation

A formal minor-planet designation is, in its final form, a number–name combination given to a minor planet (asteroid, centaur, trans-Neptunian object and dwarf planet but not comet).

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Moonlet

A moonlet, minor moon, minor natural satellite, or minor satellite is a particularly small natural satellite orbiting a planet, dwarf planet, or other minor planet.

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NASA

The National Aeronautics and Space Administration (NASA) is an independent agency of the U.S. federal government responsible for the civil space program, aeronautics research, and space research.

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NASA Headquarters

The Mary W. Jackson NASA Headquarters building at 300 E Street SW in Washington, D.C. houses NASA leadership who provide overall guidance and direction to the US government executive branch agency NASA, under the leadership of the NASA administrator.

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Natural satellite

A natural satellite is, in the most common usage, an astronomical body that orbits a planet, dwarf planet, or small Solar System body (or sometimes another natural satellite).

See 486958 Arrokoth and Natural satellite

Neptune

Neptune is the eighth and farthest known planet from the Sun.

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New Horizons

New Horizons is an interplanetary space probe launched as a part of NASA's New Frontiers program.

See 486958 Arrokoth and New Horizons

Observation arc

In observational astronomy, the observation arc (or arc length) of a Solar System body is the time period between its earliest and latest observations, used for tracing the body's path.

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Occultation

An occultation is an event that occurs when one object is hidden from the observer by another object that passes between them.

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Orbital eccentricity

In astrodynamics, the orbital eccentricity of an astronomical object is a dimensionless parameter that determines the amount by which its orbit around another body deviates from a perfect circle.

See 486958 Arrokoth and Orbital eccentricity

Orbital inclination

Orbital inclination measures the tilt of an object's orbit around a celestial body.

See 486958 Arrokoth and Orbital inclination

Orbital period

The orbital period (also revolution period) is the amount of time a given astronomical object takes to complete one orbit around another object.

See 486958 Arrokoth and Orbital period

Orbital speed

In gravitationally bound systems, the orbital speed of an astronomical body or object (e.g. planet, moon, artificial satellite, spacecraft, or star) is the speed at which it orbits around either the barycenter (the combined center of mass) or, if one body is much more massive than the other bodies of the system combined, its speed relative to the center of mass of the most massive body.

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Organic compound

Some chemical authorities define an organic compound as a chemical compound that contains a carbon–hydrogen or carbon–carbon bond; others consider an organic compound to be any chemical compound that contains carbon.

See 486958 Arrokoth and Organic compound

Ouroboros

The ouroboros or uroboros is an ancient symbol depicting a serpent or dragon eating its own tail.

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Outgassing

Outgassing (sometimes called offgassing, particularly when in reference to indoor air quality) is the release of a gas that was dissolved, trapped, frozen, or absorbed in some material.

See 486958 Arrokoth and Outgassing

Perturbation (astronomy)

In astronomy, perturbation is the complex motion of a massive body subjected to forces other than the gravitational attraction of a single other massive body.

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Phases of ice

The phases of ice are all possible states of matter for water as a solid.

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Photodissociation

Photodissociation, photolysis, photodecomposition, or photofragmentation is a chemical reaction in which molecules of a chemical compound are broken down by absorption of light or photons.

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Photoionization

Photoionization is the physical process in which an ion is formed from the interaction of a photon with an atom or molecule.

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Photometry (astronomy)

In astronomy, photometry, from Greek photo- ("light") and -metry ("measure"), is a technique used in astronomy that is concerned with measuring the flux or intensity of light radiated by astronomical objects.

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Phys.org

Phys.org is an online science, research and technology news aggregator offering briefs from press releases and reports from news agencies.

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Planetary migration

Planetary migration occurs when a planet or other body in orbit around a star interacts with a disk of gas or planetesimals, resulting in the alteration of its orbital parameters, especially its semi-major axis.

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Planetesimal

Planetesimals are solid objects thought to exist in protoplanetary disks and debris disks.

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Pluto

Pluto (minor-planet designation: 134340 Pluto) is a dwarf planet in the Kuiper belt, a ring of bodies beyond the orbit of Neptune. 486958 Arrokoth and Pluto are minor planet object articles (numbered), minor planets visited by spacecraft, named minor planets and objects observed by stellar occultation.

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Pluto Energetic Particle Spectrometer Science Investigation

Pluto Energetic Particle Spectrometer Science Investigation (PEPSSI), is an instrument on the New Horizons space probe to Pluto and beyond, it is designed to measure ions and electrons. 486958 Arrokoth and Pluto Energetic Particle Spectrometer Science Investigation are new Horizons.

See 486958 Arrokoth and Pluto Energetic Particle Spectrometer Science Investigation

Porosity

Porosity or void fraction is a measure of the void (i.e. "empty") spaces in a material, and is a fraction of the volume of voids over the total volume, between 0 and 1, or as a percentage between 0% and 100%.

See 486958 Arrokoth and Porosity

Powhatan

The Powhatan people are Indigenous peoples of the Northeastern Woodlands who belong to member tribes of the Powhatan Confederacy, or Tsenacommacah.

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Powhatan language

Powhatan or Virginia Algonquian was an Eastern Algonquian subgroup of the Algonquian languages.

See 486958 Arrokoth and Powhatan language

Preferred walking speed

The preferred walking speed is the speed at which humans or animals choose to walk.

See 486958 Arrokoth and Preferred walking speed

Proto-Algonquian language

Proto-Algonquian (commonly abbreviated PA) is the proto-language from which the various Algonquian languages are descended.

See 486958 Arrokoth and Proto-Algonquian language

Provisional designation in astronomy

Provisional designation in astronomy is the naming convention applied to astronomical objects immediately following their discovery.

See 486958 Arrokoth and Provisional designation in astronomy

Pulaar language

Pulaar (in Adlam: 𞤆𞤵𞤤𞤢𞥄𞤪, in Ajami: rtl) is a Fula language spoken primarily as a first language by the Fula and Toucouleur peoples in the Senegal River valley area traditionally known as Futa Tooro and further south and east.

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Radioactive decay

Radioactive decay (also known as nuclear decay, radioactivity, radioactive disintegration, or nuclear disintegration) is the process by which an unstable atomic nucleus loses energy by radiation.

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Radiometry

Radiometry is a set of techniques for measuring electromagnetic radiation, including visible light.

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Radionuclide

A radionuclide (radioactive nuclide, radioisotope or radioactive isotope) is a nuclide that has excess numbers of either neutrons or protons, giving it excess nuclear energy, and making it unstable.

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Ralph (New Horizons)

Ralph is a science instrument aboard the robotic New Horizons spacecraft, which was launched in 2006. 486958 Arrokoth and Ralph (New Horizons) are new Horizons.

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REX (New Horizons)

REX or Radio Science Experiment is an experiment on the New Horizons space probe to measure properties of the atmosphere of Pluto during the 2015 flyby. 486958 Arrokoth and REX (New Horizons) are new Horizons.

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Rim (crater)

The rim or edge of an impact crater is the part that extends above the height of the local surface, usually in a circular or elliptical pattern.

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Rotation

Rotation or rotational motion is the circular movement of an object around a central line, known as axis of rotation.

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Sagittarius (constellation)

Sagittarius is one of the constellations of the zodiac and is located in the Southern celestial hemisphere.

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Santa Cruz Province, Argentina

Santa Cruz Province (Provincia de Santa Cruz,, "Holy Cross") is a province of Argentina, located in the southern part of the country, in Patagonia.

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Scarp retreat

Scarp retreat is a geological process through which the location of an escarpment changes over time.

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Science (journal)

Science, also widely referred to as Science Magazine, is the peer-reviewed academic journal of the American Association for the Advancement of Science (AAAS) and one of the world's top academic journals.

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Science News

Science News (SN) is an American bi-weekly magazine devoted to articles about new scientific and technical developments, typically gleaned from recent scientific and technical journals.

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Science outreach

Science outreach, also called education and public outreach (EPO or E/PO) or simply public outreach, is an umbrella term for a variety of activities by research institutes, universities, and institutions such as science museums, aimed at promoting public awareness (and understanding) of science and making informal contributions to science education.

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Scientific American

Scientific American, informally abbreviated SciAm or sometimes SA, is an American popular science magazine.

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Sky

The sky is an unobstructed view upward from the surface of the Earth.

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Society for Science

Society for Science, formerly known as Science Service and later Society for Science and the Public, is a 501(c)(3) non-profit organization dedicated to the promotion of science, through its science education programs and publications, including the bi-weekly Science News magazine and Science News Explores.

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Software bug

A software bug is a bug in computer software.

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Solar irradiance

Solar irradiance is the power per unit area (surface power density) received from the Sun in the form of electromagnetic radiation in the wavelength range of the measuring instrument.

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Solar wind

The solar wind is a stream of charged particles released from the Sun's outermost atmospheric layer, the corona.

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Space Telescope Science Institute

The Space Telescope Science Institute (STScI) is the science operations center for the Hubble Space Telescope (HST), science operations and mission operations center for the James Webb Space Telescope (JWST), and science operations center for the Nancy Grace Roman Space Telescope.

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Space.com

Space.com is an online publication focused on space exploration, astronomy, skywatching and entertainment, with editorial teams based in the United States and United Kingdom.

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Spacecraft

A spacecraft is a vehicle that is designed to fly and operate in outer space.

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Spacecraft Event Time

Spacecraft Event Time (SCET) is the spacecraft-local time for events that happen at the spacecraft.

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Spectral imaging

Spectral imaging is imaging that uses multiple bands across the electromagnetic spectrum.

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Spectral slope

In astrophysics and planetary science, spectral slope, also called spectral gradient, is a measure of dependence of the reflectance on the wavelength.

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Spectrometer

A spectrometer is a scientific instrument used to separate and measure spectral components of a physical phenomenon.

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Spheroid

A spheroid, also known as an ellipsoid of revolution or rotational ellipsoid, is a quadric surface obtained by rotating an ellipse about one of its principal axes; in other words, an ellipsoid with two equal semi-diameters.

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Springer Nature

Springer Nature or the Springer Nature Group is a German-British academic publishing company created by the May 2015 merger of Springer Science+Business Media and Holtzbrinck Publishing Group's Nature Publishing Group, Palgrave Macmillan, and Macmillan Education.

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Sputtering

In physics, sputtering is a phenomenon in which microscopic particles of a solid material are ejected from its surface, after the material is itself bombarded by energetic particles of a plasma or gas.

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Standard deviation

In statistics, the standard deviation is a measure of the amount of variation of a random variable expected about its mean.

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Stratospheric Observatory for Infrared Astronomy

The Stratospheric Observatory For Infrared Astronomy (SOFIA) was a 80/20 joint project of NASA and the German Aerospace Center (DLR) to construct and maintain an airborne observatory.

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Streaming instability

In planetary science a streaming instability is a hypothetical mechanism for the formation of planetesimals in which the drag felt by solid particles orbiting in a gas disk leads to their spontaneous concentration into clumps which can gravitationally collapse.

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Strength of materials

The field of strength of materials (also called mechanics of materials) typically refers to various methods of calculating the stresses and strains in structural members, such as beams, columns, and shafts.

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Stress (linguistics)

In linguistics, and particularly phonology, stress or accent is the relative emphasis or prominence given to a certain syllable in a word or to a certain word in a phrase or sentence.

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Subsolar point

The subsolar point on a planet is the point at which its Sun is perceived to be directly overhead (at the zenith); that is, where the Sun's rays strike the planet exactly perpendicular to its surface.

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Sulfur

Sulfur (also spelled sulphur in British English) is a chemical element; it has symbol S and atomic number 16.

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Sun

The Sun is the star at the center of the Solar System.

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Surface gravity

The surface gravity, g, of an astronomical object is the gravitational acceleration experienced at its surface at the equator, including the effects of rotation.

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SWAP (New Horizons)

SWAP (solar wind around Pluto) is a science instrument aboard the unmanned New Horizons space probe, which was designed to fly by dwarf planet Pluto. 486958 Arrokoth and SWAP (New Horizons) are new Horizons.

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Terminator (solar)

A terminator or twilight zone is a moving line that divides the daylit side and the dark night side of a planetary body.

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The New York Times

The New York Times (NYT) is an American daily newspaper based in New York City.

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The Planetary Society

The Planetary Society is an American internationally-active non-governmental nonprofit organization.

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Tholin

Tholins (after the Greek θολός (tholós) "hazy" or "muddy"; from the ancient Greek word meaning "sepia ink") are a wide variety of organic compounds formed by solar ultraviolet or cosmic ray irradiation of simple carbon-containing compounds such as carbon dioxide, methane or ethane, often in combination with nitrogen or water.

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Thule

Thule (Thúlē; Thūlē also spelled as Thylē) is the most northerly location mentioned in ancient Greek and Roman literature and cartography.

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Tidal force

The tidal force or tide-generating force is a gravitational effect that stretches a body along the line towards and away from the center of mass of another body due to spatial variations in strength in gravitational field from the other body.

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Tidal locking

Tidal locking between a pair of co-orbiting astronomical bodies occurs when one of the objects reaches a state where there is no longer any net change in its rotation rate over the course of a complete orbit.

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Tidewater (region)

"Tidewater" is a term for the north Atlantic Plain region of the United States.

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Trans-Neptunian object

A trans-Neptunian object (TNO), also written transneptunian object, is any minor planet in the Solar System that orbits the Sun at a greater average distance than Neptune, which has an orbital semi-major axis of 30.1 astronomical units (au).

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Trough (geology)

In geology, a trough is a linear structural depression that extends laterally over a distance.

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UBV photometric system

The UBV photometric system (from Ultraviolet, Blue, Visual), also called the Johnson system (or Johnson-Morgan system), is a photometric system usually employed for classifying stars according to their colors.

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Ultraviolet

Ultraviolet (UV) light is electromagnetic radiation of wavelengths of 10–400 nanometers, shorter than that of visible light, but longer than X-rays.

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Uncertainty parameter

The uncertainty parameter U is introduced by the Minor Planet Center (MPC) to quantify the uncertainty of a perturbed orbital solution for a minor planet.

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Universal Time

Universal Time (UT or UT1) is a time standard based on Earth's rotation.

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Universities Space Research Association

The Universities Space Research Association (USRA) was incorporated on March 12, 1969, in Washington, D.C. as a private, nonprofit corporation under the auspices of the National Academy of Sciences (NAS).

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Volatile (astrogeology)

Volatiles are the group of chemical elements and chemical compounds that can be readily vaporized.

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Wavelength

In physics and mathematics, wavelength or spatial period of a wave or periodic function is the distance over which the wave's shape repeats.

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William Strachey

William Strachey (4 April 1572 – buried 16 August 1621) was an English writer whose works are among the primary sources for the early history of the English colonisation of North America.

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YouTube

YouTube is an American online video sharing platform owned by Google.

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Yucatec Maya language

Yucatec Maya (referred to by its speakers simply as Maya or as maaya t’aan) is a Mayan language spoken in the Yucatán Peninsula, including part of northern Belize.

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132524 APL

132524 APL (provisional designation) is a small background asteroid in the intermediate asteroid belt. 486958 Arrokoth and 132524 APL are minor planet object articles (numbered), minor planets visited by spacecraft, named minor planets and new Horizons.

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486958 Arrokoth

486958 Arrokoth (provisional designation; formerly nicknamed Ultima Thule) is a trans-Neptunian object located in the Kuiper belt. 486958 Arrokoth and 486958 Arrokoth are 2019 in spaceflight, astronomical objects discovered in 2014, cold classical Kuiper belt objects, Discoveries by Marc Buie, Discoveries by the Hubble Space Telescope, Discoveries by the New Horizons KBO Search, minor planet object articles (numbered), minor planets visited by spacecraft, named minor planets, new Horizons and objects observed by stellar occultation.

See 486958 Arrokoth and 486958 Arrokoth

5145 Pholus

5145 Pholus is an eccentric centaur in the outer Solar System, approximately in diameter, that crosses the orbit of both Saturn and Neptune. 486958 Arrokoth and 5145 Pholus are minor planet object articles (numbered) and named minor planets.

See 486958 Arrokoth and 5145 Pholus

References

[1] https://en.wikipedia.org/wiki/486958_Arrokoth

Also known as (486958) 2014 MU69, (486958) Arrokoth, 1110113Y, 2014 MU69, 486958, 486958 Ultima Thule, Arrakoth, Arrokoth, Arrokoth (KBO), Arrokoth (TNO), Arrokoth (asteroid), Arrokoth (kuiper belt object), Arrokoth (minor planet), Arrokoth (planetesimal), Craters of (486958) Arrokoth, Craters of 486958 Arrokoth, Craters of Arrokoth, Craters on (486958) Arrokoth, Craters on 486958 Arrokoth, Craters on Arrokoth, Exploration of (486958) Arrokoth, Exploration of 486958 Arrokoth, Exploration of Arrokoth, KBO 2014 MU69, KBO-2014 MU69, List of craters of (486958) Arrokoth, List of craters of 486958 Arrokoth, List of craters of Arrokoth, List of craters on (486958) Arrokoth, List of craters on 486958 Arrokoth, List of craters on Arrokoth, List of geological features on (486958) 2014 MU69, List of geological features on (486958) Arrokoth, List of geological features on 2014 MU69, List of geological features on 486958 Arrokoth, List of geological features on Arrokoth, Lobus (planetary geology), MU69, New Horizons PT1, Snowman (asteroid), Snowman (minor planet), Snowman asteroid, Space Snowman, The snowman asteroid, Ultima Thule (KBO), Ultima Thule (TNO), Ultima Thule (asteroid), Ultima Thule (kuiper belt object), Ultima Thule (minor planet), Ultima Thule (planetesimal), Ultima Thule (planetoid).

, Hill sphere, Hubble Space Telescope, Hydrogen, Hydrogen cyanide, Hydrogen sulfide, Impact event, Infrared, International Astronomical Union, Jet Propulsion Laboratory, JPL Small-Body Database, Julian day, Julian year (astronomy), Jupiter, Kelvin, Kuiper belt, Lag deposit, Latin literature, Light curve, Lineation (geology), List of minor planets and comets visited by spacecraft, List of trans-Neptunian objects, Long Range Reconnaissance Imager, Lunar and Planetary Institute, Macromolecule, Magnitude (astronomy), Mapuche language, Marc Buie, Max Planck Institute for Solar System Research, Methanol, Micrometre, Minimum orbit intersection distance, Minor planet, Minor Planet Center, Minor-planet designation, Moonlet, NASA, NASA Headquarters, Natural satellite, Neptune, New Horizons, Observation arc, Occultation, Orbital eccentricity, Orbital inclination, Orbital period, Orbital speed, Organic compound, Ouroboros, Outgassing, Perturbation (astronomy), Phases of ice, Photodissociation, Photoionization, Photometry (astronomy), Phys.org, Planetary migration, Planetesimal, Pluto, Pluto Energetic Particle Spectrometer Science Investigation, Porosity, Powhatan, Powhatan language, Preferred walking speed, Proto-Algonquian language, Provisional designation in astronomy, Pulaar language, Radioactive decay, Radiometry, Radionuclide, Ralph (New Horizons), REX (New Horizons), Rim (crater), Rotation, Sagittarius (constellation), Santa Cruz Province, Argentina, Scarp retreat, Science (journal), Science News, Science outreach, Scientific American, Sky, Society for Science, Software bug, Solar irradiance, Solar wind, Space Telescope Science Institute, Space.com, Spacecraft, Spacecraft Event Time, Spectral imaging, Spectral slope, Spectrometer, Spheroid, Springer Nature, Sputtering, Standard deviation, Stratospheric Observatory for Infrared Astronomy, Streaming instability, Strength of materials, Stress (linguistics), Subsolar point, Sulfur, Sun, Surface gravity, SWAP (New Horizons), Terminator (solar), The New York Times, The Planetary Society, Tholin, Thule, Tidal force, Tidal locking, Tidewater (region), Trans-Neptunian object, Trough (geology), UBV photometric system, Ultraviolet, Uncertainty parameter, Universal Time, Universities Space Research Association, Volatile (astrogeology), Wavelength, William Strachey, YouTube, Yucatec Maya language, 132524 APL, 486958 Arrokoth, 5145 Pholus.

486958 Arrokoth, the Glossary

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