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Puppis
From Wikipedia, the free encyclopedia
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| List of stars in Puppis | |
| Abbreviation: | Pup |
| Genitive: | Puppis |
| Symbology: | the Poop Deck |
| Right ascension: | 7.5 h |
| Declination: | −30° |
| Area: | 673 sq. deg. (20th) |
| Main stars: | 9 |
| Bayer/Flamsteed stars: | 76 |
| Stars known to have planets: | 4 |
| Bright stars: | 1 |
| Nearby stars: | 2 |
| Brightest star: | ζ Pup (Naos) (2.25m) |
| Nearest star: | HD 69830 (41 ly) |
| Messier objects: | 3 |
| Meteor showers: | Pi Puppids Zeta Puppids Puppid-Velids |
| Bordering constellations: | Monoceros Pyxis Vela Carina Pictor Columba Canis Major Hydra |
| Visible at latitudes between +40° and −90° Best visible at 21:00 (9 p.m.) during the month of February |
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Puppis (pronounced /ˈpʌpɪs/, Latin: poop deck) is a southern constellation. It is the largest of the four parts into which Argo Navis was split.
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As the milky way runs through Puppis, there are a large number of open clusters in the constellation. Messier 46 (M46) and Messier 47 (M47) are two open clusters in the same binocular field. M47 can be seen with the naked eye under dark skies, and its brightest stars are 6th magnitude. Messier 93 (M93) is another open cluster somewhat to the south. NGC 2451 is a very bright open cluster containing the star c Puppis.
On November 14, 2007, Nova Puppis 2007, or V597 Pup, was discovered about 1 degree northeast of RS Puppis, a Cepheid variable. The coordinates are RA = 8:16.3, DEC = -34°15', J2000.0 standard. On the Puppis map at right, that is approximately two thirds the distance from ρ Pup to ζ Pup.
Several extrasolar planet systems have been found around stars in the constellation Puppis, including:
- On July 1, 2003, a planet was found orbiting the star HD 70642. This planetary system is much like Jupiter with a wide, circular orbit and a long-period.
- On April 18, 2006, HD 69830 (the nearest star of this constellation) was discovered to have three Neptune-mass planets, the first multi-planetary system without any Jupiter-like or Saturn-like planets. The star also hosts an asteroid belt at the region between middle planet to outer planet.
- On July 4, 2007, the first extrasolar planet found in the open cluster NGC 2423, was discovered around the red giant star NGC 2423-3. The planet is 10.6 times the mass of Jupiter and orbits at 2.1 AU distance.
- Ian Ridpath and Wil Tirion (2007). Collins Stars and Planets Guide, HarperCollins, London. ISBN 978-0007251209.
- The Deep Photographic Guide to the Constellations: Puppis
- Nova in Puppis, Roger Sinnott, November 15, 2007
- AAVSO Alert Notice 362, Nova in Puppis, November 14, 2007
- AAVSO Special Notice #80, Nova Puppis 2007 = V597 Pup, November 15, 2007
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