Painter (constellation)
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Constellation painter |
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| Latin name | Pictor |
| Latin genitive | Pictoris |
| Abbreviation | Pic |
| Right ascension | 04 h 32 m 52 s to 06 h 52 m 03 s |
| declination | −64 ° 09 ′ 07 ″ to −42 ° 47 ′ 47 ″ |
| surface | 246,739 deg² rank 59 |
| Completely visible | 26.3 ° N to 90 ° S |
| Observation time for Central Europe | not observable |
| Number of stars brighter than 3 mag | 0 |
| Brightest star (size) | α Pictoris (3.27) |
| Meteor streams |
no |
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Neighboring constellations ( clockwise from north ) |
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| swell | IAU , |
 The Pictor constellation as seen with the naked eye |
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The painter ( Latin: Pictor ) or the painter's easel is an inconspicuous constellation in the southern sky that cannot be seen from Germany due to its southern location . It is located west of the bright star Canopus , which belongs to the keel of the ship (Carina). Only two stars are brighter than the fourth magnitude . The constellation was introduced in 1752 by the French astronomer Nicolas Louis de Lacaille . On older star maps it is usually shown as an easel with a brush.
Celestial objects
| B. | F. | Name or other designation |
size | Lj | Spectral class |
|---|---|---|---|---|---|
| α | 3.27 m | 99 | A7 IV | ||
| β | 3.85 m | 63 | A5 V | ||
| γ | 4.50 m | 174 | K1 III | ||
| δ | 4.72 m | 1656 | B0.5 IV | ||
| η 2 | 5.05 m | 474 | M2 III | ||
| HR 2196 | 5.04 m | 394 | K2 / K3 III | ||
| HR 2049 | 5.16 m | 265 | G8 III | ||
| HR 2389 | 5.20 m | 312 | K0 III | ||
| HR 2094 | 5.29 m | 114 | F0 Ve | ||
| λ | 5.30 m | 343 | K0 / K1 III | ||
| HR 2008 | 5.31 m | 460 | K0 / K1 II | ||
| η 1 | 5.37 m | 85 | F2 V | ||
| ζ | 5.44 m | 118 | F7 III-IV | ||
| HR 1856 | 5.46 m | 143 | G3 IV | ||
| ι | 5.58 m | ||||
| Kapteyn's star | 8.8 m | 12.77 | M VI | ||
| AB Pictoris | 9.1 m | 150 | K 1V |
Outstanding objects
- The brightest star, α Pictoris, is a white-blue sub-giant of the spectral class A6 V at a distance of 100 light years . It has three times the diameter, three times the mass and 40 times the luminosity of our sun .
- β Pictoris is a star 63 light-years away with nine times the luminosity and twice the mass of our sun. It belongs to the spectral class A5 V and is the second brightest star in the constellation. In 1984 a dust disk with a diameter of 25 AU was detected around β Pictoris . It was the first star in which this could for the first time be observed directly using an optical telescope . Possibly it is an accretion disk from which a planetary system can be formed. Observations indicate that two planets may already have formed. Recent Hubble images indicate two separate disks of dust along with a large planet.
- Kapteyn's star , a sub-dwarf with an apparent magnitude of 8.8 m . At only 12.77 light years away, it is one of the Sun's closest neighbors. At least one prism binocular is required to observe it . In 1897, the Dutch astronomer Jacobus Kapteyn discovered that the position of a faint star had changed significantly. With 8.73 arc seconds per year, Kapteyn's star has the second highest measured proper motion of all stars after Barnard's arrow star.
- AB Pictoris , a variable star located 150 light years from our sun.
- ι Pictoris is a binary star system with an apparent brightness of 5.58 / 6.42 m , which can be observed with a small telescope from 5 cm aperture. It is 12.3 "apart.
- The painter also contains the irregular galaxy NGC 1705, 17 million light-years away .
See also
Web links
Commons : Pictor (constellation painter) - collection of images, videos and audio files
Individual evidence
- ↑ Look it up! 100,000 facts from all areas of knowledge . 12th, revised edition. 1982, p. 99