Corvus (constellation)
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Template:Infobox Constellation Corvus (Latin for Raven/Crow) is a small southern constellation with only 11 stars visible to the naked eye (brighter than magnitude 5.5). It was one of the 48 constellations listed by Ptolemy, and also counts among the 88 modern constellations.
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Notable features
δ, γ, ε, and β form the 'sail' asterism; and γ and δ serve as pointers toward Spica.
Notable deep sky objects
Corvus contains no Messier objects.
The Ringtail peculiar galaxy consists of the possibly colliding NGC 4038 and NGC 4039, and appears to have a heart shape as seen from Terra.
The center of Corvus is home to a Planetary nebula NGC 4361. The nebula itself resembles a small elliptical galaxy, but the magnitude 13 center star gives away its true nature.
Mythology
In Greek mythology, a crow serves Apollo, and is sent to fetch water, but it rests lazily on the journey, and after finally obtaining the water in a cup, takes back a water snake as well, as an excuse. According to the myth, Apollo saw through the fraud, and angrily cast the crow, cup, and snake, into the sky. The origin of this story is likely to be the juxtaposition of this constellation with those of Crater (constellation), and Hydra (constellation), in the area of the sky known as the Sea.
Table of notable stars
| BD | Names and catalog numbers | Magnitude | Ly away | Comment |
|---|---|---|---|---|
| γ | Gienah, Gienah Ghurab, HD106625 | 2.59 | 190 | |
| β | Kraz, HD109379 | 2.65 | 96 | |
| δ | Algorab, Algoral, Algorel, Algores, ADS 8572, HD108767 | 3.0 9.2 | 120 or 88? | White primary star and a pale purple companion. |
| ε | Minkar, HD105707 | 3.00 | 140 | |
| α | Al Chiba, Al Minliar al Ghurab, Alchiba, Alchita, Alkhiba, HD105452 | 4.02 | 49 | |
| ζ | HD107348 | 5.2 13.7 | 360 | Double star. |
| VV | Struve 1669, ADS 8627 | 6.0 6.0 | 278 | Quadruple. |
| R | 6.7 / 14.4 | Variable star with a 317.03 day cycle. | ||
| Ross 695, HIP 60559 | 12.4 | 29.64 | Very close to Sol, with a proper motion of 2.52 seconds of arc per year. |
Stars
- Stars with proper names:
- Alchibah [Alchiba, Al Chiba, Alchita, Alchitah] or Al Minliar al Ghurab (1/α Crv) 4.02
- < الخباء al-xibā’ The tent (lit. shelter)
- < منقار الغراب minqār al-ghurāb Beak (lit. peak) of the raven
- Alchibah [Alchiba, Al Chiba, Alchita, Alchitah] or Al Minliar al Ghurab (1/α Crv) 4.02
- Kraz or Tso Hea (9/β Crv) 2.65
- Tso Hea < 左轄 (Mandarin zuǒxiá) The left-hand lynchpin (of the carriage)
- Kraz or Tso Hea (9/β Crv) 2.65
- Gienah [Gienah Ghurab] (4/γ Crv) 2.58
- < الجناح الغراب الأيمن al-janāħ al-ghurāb al-’ayman The right wing of the raven
- Gienah [Gienah Ghurab] (4/γ Crv) 2.58
- Algorab [Algores, Algoral, Algorel] (7/δ Crv) 2.94
- < الغراب al-ghurāb The raven
- Algorab [Algores, Algoral, Algorel] (7/δ Crv) 2.94
- Minkar (2/ε Crv) 3.02
- < منقار minqār beak (lit. peak)
- Minkar (2/ε Crv) 3.02
- Stars with Bayer designations:
- Stars with Flamsteed designations:
Template:ConstellationsListedByPtolemy Template:ConstellationList
External links
- The Deep Photographic Guide to the Constellations: Corvus (http://www.allthesky.com/constellations/crater/)de:Rabe (Sternbild)
es:Corvus (constelación) fr:Corbeau (constellation) ko:까마귀자리 id:Corvus it:Corvus (astronomia) la:Corvus nl:Corvus ja:からす座 pl:Kruk (gwiazdozbiór) pt:Corvus fi:Korppi (tähdistö) th:กลุ่มดาวนกกา