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Smithsonian Astrophysical Observatory Star Catalog

The Smithsonian Astrophysical Observatory Star Catalog is an astrometric star catalogue. [1]

11 relations: Apparent magnitude, Astrometry, Betelgeuse, Declination, Occultation, Right ascension, Rings of Uranus, Smithsonian Astrophysical Observatory, Star catalogue, Uranus, Vega.

Apparent magnitude

The apparent magnitude (m) of a celestial object is a measure of its brightness as seen by an observer on Earth, adjusted to the value it would have in the absence of the atmosphere.

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Astrometry

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

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Betelgeuse

Betelgeuse, also known by its Bayer designation Alpha Orionis (shortened to α Orionis or α Ori), is the ninth-brightest star in the night sky and second-brightest in the constellation of Orion.

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Declination

In astronomy, declination (abbreviated dec; symbol δ) is one of the two angles that locate a point on the celestial sphere in the equatorial coordinate system, the other being hour angle.

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Occultation

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

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Right ascension

Right ascension (abbreviated RA; symbol α) is the angular distance measured eastward along the celestial equator from the vernal equinox to the hour circle of the point in question.

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Rings of Uranus

The planet Uranus has a system of rings intermediate in complexity between the more extensive set around Saturn and the simpler systems around Jupiter and Neptune.

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Smithsonian Astrophysical Observatory

The Smithsonian Astrophysical Observatory (SAO) is a research institute of the Smithsonian Institution headquartered in Cambridge, Massachusetts, where it is joined with the Harvard College Observatory (HCO) to form the Harvard–Smithsonian Center for Astrophysics (CfA).

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Star catalogue

A star catalogue, or star catalog, is an astronomical catalogue that lists stars.

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Uranus

Uranus is the seventh planet from the Sun.

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Vega

Vega (α Lyr, α Lyrae, Alpha Lyrae) is the brightest star in the constellation Lyra, the fifth brightest star in the night sky and the second brightest star in the northern celestial hemisphere, after Arcturus.

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Redirects here:

SAO Catalogue, Smithsonian Astrophysical Observatory Star Catalogue, Smithsonian Astrophysical Observatory catalogue.

References

[1] https://en.wikipedia.org/wiki/Smithsonian_Astrophysical_Observatory_Star_Catalog

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