K-Tec

Messier 47

  • mariosi
  • mariosi's Avatar Topic Author
  • Offline
  • Proto Star
  • Proto Star
More
5 months 3 weeks ago #106489 by mariosi
mariosi created the topic: Messier 47
Messier 47,
Right ascension 07h 36.6m
Declination -14° 30′
Distance 1.6 kly (490 Pc)
Apparent magnitude (V) 4.2
Apparent dimensions (V) 30.0′
Physical characteristics
Radius 6
Estimated age 78 million years
Other designations NGC 2422, M47

Messier 47 (Messier Object 47, M47, or NGC 2422) is an open cluster in the constellation Puppis. It was discovered by Giovanni Batista Hodierna before 1654 and independently discovered by Charles Messier on February 19, 1771. It was later independently discovered again, under the current name NGC 2422.

There is actually no cluster in the position indicated by Messier, which he expressed in terms of its right ascension and declination with respect to the star 2 Puppis. However, if the signs of Messier's coordinate differences are changed, the position matches that of NGC 2422.Until the equivalency of M47 with NGC2422 was found, M47 was considered a lost Messier Object. The discovery that M47 and NGC2422 were the same cluster only came in 1959 with a realization by Canadian astronomer T. F. Morris.

Dob 10 inches S/W solid tube f4.7
30mm T/S

Marios

Attachments:

Please Log in to join the conversation.

Time to create page: 0.080 seconds
Powered by Kunena Forum