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Lupus (constellation)
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Lupus (constellation)
Lupus is a constellation of the mid-Southern Sky. Its name is Latin for wolf. Lupus was one of the 48 constellations listed by the 2nd-century astronomer Ptolemy, and it remains one of the 88 modern constellations but was mostly considered an asterism associated with the nearby constellation Centaurus.
In ancient times, the constellation was considered an asterism within Centaurus, and was considered to have been an arbitrary animal, killed, or about to be killed, on behalf of, or for, Centaurus. An alternative visualization, attested by Eratosthenes, saw this constellation as a wineskin held by Centaurus. It was not separated from Centaurus until Hipparchus of Bithynia named it Therion (Medieval Latin: Fera meaning "beast") in the 2nd century BC.
The Greek constellation is probably based on the Babylonian figure known as the Mad Dog (UR.IDIM). This was a strange hybrid creature that combined the head and torso of a man with the legs and tail of a lion (the cuneiform sign 'UR' simply refers to a large carnivore; lions, wolves and dogs are all included). It is often found in association with the sun god and another mythical being called the Bison-man, which is supposedly related to the Greek constellation of Centaurus.
In Arab folk astronomy, Lupus, together with Centaurus were collectively called الشماريخ al-Shamareekh, meaning the dense branches of the date palm's fruit.
Later, in Islamic Medieval astronomy, it was named السبع al-Sab', which is a term used for any predatory wild beast (same as the Greek therion), as a separate constellation, but drawn together with Centaurus. In some manuscripts of Al-Sufi's Book of Fixed Stars and celestial globes, it was drawn as a lion; in others, it is drawn as a wolf, both conforming to the Sab' name.
In Europe, no particular animal was associated with it until the Latin translation of Ptolemy's work identified it with the wolf.
Lupus is bordered by six different constellations, although one of them (Hydra) merely touches at the corner. The other five are Scorpius (the scorpion), Norma (the right angle), Circinus (the compass), Libra (the balance scale), and Centaurus (the centaur). Covering 333.7 square degrees and 0.809% of the night sky, it ranks 46th of the 88 modern constellations. The three-letter abbreviation for the constellation, as adopted by the International Astronomical Union in 1922, is Lup. The official constellation boundaries are defined by a twelve-sided polygon (illustrated in infobox). In the equatorial coordinate system, the right ascension coordinates of these borders lie between14h 17m 48.0635s and16h 08m 36.6735s, while the declination coordinates are between −29.83° and −55.58°. The whole constellation is visible to observers south of latitude 34°N.
Overall, there are 127 stars within the constellation's borders brighter than or equal to apparent magnitude 6.5. In his book Star Names and Their Meanings, R. H. Allen gave the names Yang Mun for Alpha Lupi, the brightest star in Lupus, and KeKwan for the blue giant Beta Lupi, both from Chinese. However, the first name is in error; both stars were part of a large Chinese constellation known in modern transliteration as Qíguān, the Imperial Guards.[citation needed]
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Lupus (constellation)
Lupus is a constellation of the mid-Southern Sky. Its name is Latin for wolf. Lupus was one of the 48 constellations listed by the 2nd-century astronomer Ptolemy, and it remains one of the 88 modern constellations but was mostly considered an asterism associated with the nearby constellation Centaurus.
In ancient times, the constellation was considered an asterism within Centaurus, and was considered to have been an arbitrary animal, killed, or about to be killed, on behalf of, or for, Centaurus. An alternative visualization, attested by Eratosthenes, saw this constellation as a wineskin held by Centaurus. It was not separated from Centaurus until Hipparchus of Bithynia named it Therion (Medieval Latin: Fera meaning "beast") in the 2nd century BC.
The Greek constellation is probably based on the Babylonian figure known as the Mad Dog (UR.IDIM). This was a strange hybrid creature that combined the head and torso of a man with the legs and tail of a lion (the cuneiform sign 'UR' simply refers to a large carnivore; lions, wolves and dogs are all included). It is often found in association with the sun god and another mythical being called the Bison-man, which is supposedly related to the Greek constellation of Centaurus.
In Arab folk astronomy, Lupus, together with Centaurus were collectively called الشماريخ al-Shamareekh, meaning the dense branches of the date palm's fruit.
Later, in Islamic Medieval astronomy, it was named السبع al-Sab', which is a term used for any predatory wild beast (same as the Greek therion), as a separate constellation, but drawn together with Centaurus. In some manuscripts of Al-Sufi's Book of Fixed Stars and celestial globes, it was drawn as a lion; in others, it is drawn as a wolf, both conforming to the Sab' name.
In Europe, no particular animal was associated with it until the Latin translation of Ptolemy's work identified it with the wolf.
Lupus is bordered by six different constellations, although one of them (Hydra) merely touches at the corner. The other five are Scorpius (the scorpion), Norma (the right angle), Circinus (the compass), Libra (the balance scale), and Centaurus (the centaur). Covering 333.7 square degrees and 0.809% of the night sky, it ranks 46th of the 88 modern constellations. The three-letter abbreviation for the constellation, as adopted by the International Astronomical Union in 1922, is Lup. The official constellation boundaries are defined by a twelve-sided polygon (illustrated in infobox). In the equatorial coordinate system, the right ascension coordinates of these borders lie between14h 17m 48.0635s and16h 08m 36.6735s, while the declination coordinates are between −29.83° and −55.58°. The whole constellation is visible to observers south of latitude 34°N.
Overall, there are 127 stars within the constellation's borders brighter than or equal to apparent magnitude 6.5. In his book Star Names and Their Meanings, R. H. Allen gave the names Yang Mun for Alpha Lupi, the brightest star in Lupus, and KeKwan for the blue giant Beta Lupi, both from Chinese. However, the first name is in error; both stars were part of a large Chinese constellation known in modern transliteration as Qíguān, the Imperial Guards.[citation needed]
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