Messier 47
|
|
| MPG / ESO 2.2 m telescope image of Messier 47 | |
| AladinLite | |
| Constellation | Aft deck of the ship |
|
Position equinox : J2000.0 |
|
|---|---|
| Right ascension | 07 h 36 m 35.0 s |
| declination | −14 ° 28 ′ 57 ″ |
| Appearance
|
|
| classification | III, 2, m (Trumpler) d (Shapley) |
| Brightness (visual) | 4.4 likes |
| Brightness (B-band) | 4.42 likes |
| Angular expansion | 30 ' |
| Number of stars | 50 |
| Brightest star | 5.7 likes |
| Physical data
|
|
| Redshift | (122 ± 10) · 10 −6 |
| Radial velocity | (37 ± 3) km / s |
| distance | 1600 ly (490 pc ) |
| diameter | 12 years |
| Age | 78 million years |
| history | |
| Discovered by |
Giovanni Battista Hodierna (publ. 1654) Charles Messier (February 19, 1771) |
| Catalog names | |
| M 47 • NGC 2422/2478 • C 0734-143 • OCl 596 • Mel 68 • Cr 152 • Lund 356 • H VIII 38, h 459, h 3088, GC 1551 | |
Messier 47 (also referred to as NGC 2422 = NGC 2478 ) is a 4.4 mag bright open star cluster with an angular extent of 30 'in the constellation Puppis . The cluster is approximately 1,600 light years away, and its 50 stars span an area of approximately 10 light years. M47 is around 80 million years old.
Web links
Commons : Messier 47 - collection of images, videos and audio files
- ESO: The hot blue stars of Messier 47 (+ photos, map & animation) December 17th, 2014
