8 relations: Epoch (astronomy), Hydra (constellation), Light-year, Monthly Notices of the Royal Astronomical Society, Red dwarf, Stellar classification, The Astronomical Journal, The Astrophysical Journal.
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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Hydra (constellation)
Hydra is the largest of the 88 modern constellations, measuring 1303 square degrees.
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Light-year
The light-year is a unit of length used to express astronomical distances and measures about 9.5 trillion kilometres or 5.9 trillion miles.
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Monthly Notices of the Royal Astronomical Society
Monthly Notices of the Royal Astronomical Society (MNRAS) is a peer-reviewed scientific journal covering research in astronomy and astrophysics.
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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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Stellar classification
In astronomy, stellar classification is the classification of stars based on their spectral characteristics.
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The Astronomical Journal
The Astronomical Journal (often abbreviated AJ in scientific papers and references) is a peer-reviewed monthly scientific journal owned by the American Astronomical Society and currently published by IOP Publishing.
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The Astrophysical Journal
The Astrophysical Journal, often abbreviated ApJ (pronounced "ap jay") in references and speech, is a peer-reviewed scientific journal of astrophysics and astronomy, established in 1895 by American astronomers George Ellery Hale and James Edward Keeler.
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Redirects here:
2MASS J14563831-2809473, GJ 3877, LP 914-54, NLTT 38829, PLX 3372.03.