Capella & Star system - Unionpedia, the concept map

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Difference between Capella and Star system

Capella vs. Star system

Capella is the brightest star in the northern constellation of Auriga. A star system or stellar system is a small number of stars that orbit each other, bound by gravitational attraction.

Astronomical unit

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

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Binary star

A binary star or binary star system is a system of two stars that are gravitationally bound to and in orbit around each other.

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Castor (star)

Castor is the second-brightest object in the zodiac constellation of Gemini.

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Constellation

A constellation is an area on the celestial sphere in which a group of visible stars forms a perceived pattern or outline, typically representing an animal, mythological subject, or inanimate object.

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Double star

In observational astronomy, a double star or visual double is a pair of stars that appear close to each other as viewed from Earth, especially with the aid of optical telescopes.

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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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Epsilon Aurigae

Epsilon Aurigae (ε Aurigae, abbreviated Epsilon Aur, ε Aur) is a multiple star system in the northern constellation of Auriga, the charioteer.

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Giant star

A giant star has a substantially larger radius and luminosity than a main-sequence (or dwarf) star of the same surface temperature.

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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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Main sequence

In astronomy, the main sequence is a classification of stars which appear on plots of stellar color versus brightness as a continuous and distinctive band.

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Minute and second of arc

A minute of arc, arcminute (arcmin), arc minute, or minute arc, denoted by the symbol, is a unit of angular measurement equal to of one degree.

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Polaris

Polaris is a star in the northern circumpolar constellation of Ursa Minor.

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Procyon

Procyon is the brightest star in the constellation of Canis Minor and usually the eighth-brightest star in the night sky, with an apparent visual magnitude of 0.34.

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Red dwarf

A red dwarf is the smallest kind of star on the main sequence.

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Red giant

A red giant is a luminous giant star of low or intermediate mass (roughly 0.3–8 solar masses) in a late phase of stellar evolution.

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Right ascension

Right ascension (abbreviated RA; symbol) is the angular distance of a particular point measured eastward along the celestial equator from the Sun at the March equinox to the (hour circle of the) point in question above the Earth.

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Sirius

Sirius is the brightest star in the night sky.

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Solar System

The Solar SystemCapitalization of the name varies.

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Spectroscopy

Spectroscopy is the field of study that measures and interprets electromagnetic spectra.

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Star

A star is a luminous spheroid of plasma held together by self-gravity.

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Stellar classification

In astronomy, stellar classification is the classification of stars based on their spectral characteristics.

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United States Naval Observatory

The United States Naval Observatory (USNO) is a scientific and military facility that produces geopositioning, navigation and timekeeping data for the United States Navy and the United States Department of Defense.

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Washington Double Star Catalog

The Washington Double Star Catalog, or WDS, is a catalog of double stars, maintained at the United States Naval Observatory.

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