Messier 46
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| AladinLite | |
| Constellation | Aft deck of the ship |
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Position equinox : J2000.0 |
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|---|---|
| Right ascension | 7 h 41.7 m |
| declination | −14 ° 49 ′ |
| Appearance
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| classification | II, 2, r (Trumpler), f (Shapley) |
| Brightness (visual) | 6.1 mag |
| Brightness (B-band) | 6.33 mag |
| Angular expansion | 27 ' |
| Number of stars | 150 |
| Brightest star | 8.7 likes |
| Physical data
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| Redshift | 160 · 10 −6 |
| Radial velocity | 48.09 km / s |
| distance | 5400 ly (1700 pc ) |
| diameter | 30 ly |
| Age | 300 million years |
| history | |
| Discovered by | Charles Messier |
| Discovery time | February 19, 1771 |
| Catalog names | |
| M 46 • NGC 2437 • C 0739-147 • OCl 601 • Mel 75 • Cr 159 • Lund 373 • | |
Messier 46 (also referred to as NGC 2437 ) is a +6.1 mag bright open star cluster with an angular extent of 27 'in the constellation Puppis .
The star cluster is about 5,400 light years away and covers an area of 30 light years. The stars in the cluster are approximately 300 million years old. In the foreground of M46 is the planetary nebula NGC 2438 , which does not belong to the star cluster and is only 3000 light years away.
Individual evidence
- ↑ a b c d SIMBAD
- ↑ a b c d e f g Messier 46 at SEDS
- ↑ https://cseligman.com/text/atlas/ngc24.htm#2437
- ↑ M46 And NGC 2438: Young And Old - Astronomy Picture of the Day of March 5, 1999 (English).
