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11 relations: Apparent magnitude, Auriga (constellation), Binary star, Epoch (astronomy), Gamma Doradus variable, Hipparcos, Red dwarf, Sky & Telescope, Star, Stellar parallax, Variable star designation.
Apparent magnitude
The apparent magnitude of a celestial object is a number that is a measure of its brightness as seen by an observer on Earth.
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Auriga (constellation)
Auriga is one of the 88 modern constellations; it was among the 48 constellations listed by the 2nd-century astronomer Ptolemy.
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Binary star
A binary star is a star system consisting of two stars orbiting around their common barycenter.
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Epoch (astronomy)
In astronomy, an epoch is a moment in time used as a reference point for some time-varying astronomical quantity, such as the celestial coordinates or elliptical orbital elements of a celestial body, because these are subject to perturbations and vary with time.
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Gamma Doradus variable
Gamma Doradus variables are variable stars which display variations in luminosity due to non-radial pulsations of their surface.
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Hipparcos
Hipparcos was a scientific satellite of the European Space Agency (ESA), launched in 1989 and operated until 1993.
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Red dwarf
A red dwarf (or M dwarf) is a small and relatively cool star on the main sequence, of M spectral type.
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Sky & Telescope
Sky & Telescope (S&T) is a monthly American magazine covering all aspects of amateur astronomy, including the following.
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Star
A star is type of astronomical object consisting of a luminous spheroid of plasma held together by its own gravity.
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Stellar parallax
Stellar parallax is the apparent shift of position of any nearby star (or other object) against the background of distant objects.
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Variable star designation
Variable stars are designated using a variation on the Bayer designation format of an identifying label (as described below) combined with the Latin genitive of the name of the constellation in which the star lies.
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ADS 3675, GJ 9174, HD 32537, HIC 23783, HIP 23783, HR 1637, SAO 25019, V398 Aurigae.
