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[[ | [[File:Pegasus constellation map.svg|thumb|Pegasus Constellation Map <ref>[https://commons.wikimedia.org/wiki/File:Pegasus_constellation_map.svg wiki]</ref>]] | ||
[[File:1140x641.jpg|thumb|Algenib <ref>[https://starwalk.space/en/news/november-constellations-and-stars starwalk.space]</ref>]] | |||
[[Algenib]], is the fourth brightest star in the constellation of [[Pegasus]], the celestial winged-horse. Algenib is also one of the four stars that comprise the [[Great Square of Pegasus]] asterism. | |||
[[Algenib]] is the faintest out of the four stars that make up this asterism, the other three stars are [[Markab]] (Alpha Pegasi), [[Scheat]] (Beta Pegasi), and [[Alpheratz]] (Alpha Andromedae). It would be much brighter, but it has to be noted that Algenib is also the farthest star in this asterism, and it is the most massive and largest of all four. Algenib is larger and more massive than our Sun, having 8.9 solar masses, or 890% of our Sun’s mass, and 4.80 solar radii, or 480% of our Sun’s radius. It is thus more than 10 times bigger than our Sun. | |||
Algenib is one of the Three Guides that mark the prime meridian of the heavens, the other two being Scheat and Alpheratz.The Chinese know Gamma Pegasi / Algenib, as Bixiu yi – the First Star of Wall – The Wall mansion is formed by Algenib and Alpheratz / Alpha Andromedae – the brightest star in Andromeda. It is one of the seven mansions of the Black Tortoise. In Hindu astronomy, the asterism comprised of Algenib and Alpheratz is known as Uttara Bhadrapada or Urrtati – which is the 26th nakshatra (lunar mansion) in Hindu astrology.<ref>[https://nineplanets.org/algenib/ nineplanets]</ref> | |||
[[Gamma Pegasi]] was formally named [[Algenib]] by the IAU in 2016. The same name was also used for Alpha Pegasi, but it changed to Mirfak, also in 2016.In 2016, the International Astronomical Union organized a Working Group on Star Names (WGSN) to catalog and standardize proper names for stars. The WGSN's first bulletin of July 2016 included a table of the first two batches of names approved by the WGSN; which included Algenib for this star.<ref>[https://en.wikipedia.org/wiki/Gamma_Pegasi wiki ]</ref> | |||
[[Algenib]] marks the extreme tip of the Horse’s wing, so that its name Algenib has been considered as derived from Al Janah, the Wing, but it probably is from Al Janb, the Side. It has sometimes been written Algemo. The Persian astronomer Al Biruni (973-1048 A.D.) quoted it, with delta (δ which is now Alpheratz, the alpha (α) star of Andromeda), as Al Fargh al Thani, the Second, or Lower, Spout, i.e. of the Bucket. The 14th century Greco-Persian astronomer Chrysococca called it (Greek) Pegasos from the constellation. | [[Algenib]] marks the extreme tip of the Horse’s wing, so that its name Algenib has been considered as derived from Al Janah, the Wing, but it probably is from Al Janb, the Side. It has sometimes been written Algemo. The Persian astronomer Al Biruni (973-1048 A.D.) quoted it, with delta (δ which is now Alpheratz, the alpha (α) star of Andromeda), as Al Fargh al Thani, the Second, or Lower, Spout, i.e. of the Bucket. The 14th century Greco-Persian astronomer Chrysococca called it (Greek) Pegasos from the constellation. | ||