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Lupus (constellation): Wikis

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Lupus
Lupus
List of stars in Lupus
Abbreviation Lup
Genitive Lupi
Pronunciation /ˈljuːpəs/, genitive /ˈljuːpaɪ/
Symbolism the Wolf
Right ascension 15.3 h
Declination −45°
Family Hercules
Quadrant SQ3
Area 334 sq. deg. (46th)
Main stars 9
Bayer/Flamsteed
stars
41
Stars with planets 2
Stars brighter than 3.00m 3
Stars within 10.00 pc (32.62 ly) 1
Brightest star α Lupi (2.30m)
Nearest star LHS 397
(19.35 ly, 5.93 pc)
Messier objects 0
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.

Lupus is a constellation in the 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. It lies between Centaurus and Scorpius.

Contents

Notable features

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Stars

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.

Most of the brightest stars in Lupus are massive members of the nearest OB association: Scorpius-Centaurus[1].

Deep sky objects

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 historic supernova SN 1006 is described by various sources as appearing on April 30-May 1, 1006 in the constellation of Lupus.

Mythology and history

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.[citation needed] It was not separated from Centaurus until Hipparchus of Bithynia named it Therion (meaning beast) in the 200s BC. No particular animal was associated with it until the Latin translation of Ptolemy's work identified it with the wolf.

References

  • Ian Ridpath and Wil Tirion (2007). Stars and Planets Guide, Collins, London. ISBN 978-0007251209. Princeton University Press, Princeton. ISBN 978-0691135564.
  1. ^ Preibisch, T., Mamajek, E. (2008). "The Nearest OB Association: Scorpius-Centaurus (Sco OB2)". Handbook of Star-Forming Regions 2: 0. http://adsabs.harvard.edu/abs/2008arXiv0809.0407P. 

External links

Coordinates: Sky map 15h 18m 00s, −45° 00′ 00″


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