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Lupus (constellation)
From Wikipedia, the free encyclopedia
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| List of stars in Lupus | |
| Abbreviation: | Lup |
| Genitive: | Lupi |
| Symbology: | the Wolf |
| Right ascension: | 15 h |
| Declination: | −43° |
| Area: | 334 sq. deg. (46th) |
| Main stars: | 9 |
| Bayer/Flamsteed stars: | 41 |
| Stars known to have planets: | 1 |
| Bright stars: | 3 |
| Nearby stars: | 1 |
| Brightest star: | α Lupi (2.3m) |
| Nearest star: | Nu2 Lupi (47.5 ly) |
| Messier objects: | 0 |
| Meteor showers: | |
| Bordering constellations: | Norma Scorpius Circinus Centaurus Libra Hydra (corner) |
| Visible at latitudes between +35° and −90° Best visible at 21:00 (9 p.m.) during the month of June |
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Lupus (pronounced /ˈljuːpəs/, Latin: wolf) is a southern constellation. It is one of the 88 modern constellations and was also one of the 48 in Ptolemy's Almagest. It is between Centaurus and Scorpius.
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Lupus has no extremely bright stars, but has around thirty stars of second and third magnitude and 70 of greater than sixth, including a number of binary or multiple stars. Among the stars which make up the constellation figure, only a few are named stars, the brightest is α Lupi, or Men, a blue giant. β Lupi has the name Ke Kouan.
Towards the north of the constellation are globular clusters NGC 5824 and NGC 5986, and close by the dark nebula B 228. Two open clusters are to the south of the constellation, NGC 5822 and NGC 5749. On the western border are two spiral galaxies and the Wolf-Rayet planetary nebula IC 4406, containing some of the hottest stars in existence. Another planetary nebula, NGC 5882, is towards the centre of the constellation. The transiting exoplanet Lupus-TR-3b lies in this constellation.
The constellation has no clear mythology, but is sometimes associated with the tale of King Lycaon. Although known from ancient times no particular animal was associated with it until the Latin translation of Ptolemy's work identified it with the wolf. It was not separated from Centaurus until Hipparchus of Bithynia named it Therion (meaning beast) in the 200s BC. Prior to its separation it was considered an asterism of Centaurus, and was considered to have been an arbitrary animal, killed, or about to be killed, on behalf of, or for, Centaurus. As such, together with other constellations in the Zodiac sign of Virgo (specifically, Sagitta, and Centaurus) it may have formed the basis of the tale of the Erymanthian Boar, one of The Twelve Labours of Heracles.
- Ian Ridpath and Wil Tirion (2007). Collins Stars and Planets Guide, HarperCollins, London. ISBN 978-0007251209.
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