NGC 2477
| NGC 2477 | |
|---|---|
 Open cluster NGC 2477 in Puppis | |
| Observation data (J2000epoch) | |
| Right ascension | 07h52m09.8s[1] |
| Declination | −38° 32′ 00″[1] |
| Distance | ~ 3600ly[2](~ 1100pc[2]) |
| Apparent magnitude(V) | 5.8[1] |
| Apparent dimensions (V) | 27′[1] |
| Physical characteristics | |
| Other designations | Caldwell71,Cr165 |
| Associations | |
| Constellation | Puppis |
NGC 2477(also known asCaldwell 71or theTermite Hole Cluster[3]) is anopen clusterin theconstellationPuppis.It contains about 300 stars,[4]and was discovered byAbbé Lacaillein 1751.[4][5]The cluster's age has been estimated at 700 million years.[4]
Visual appearance
[edit]NGC 2477 is a stunning cluster, almost as extensive in the sky as the full moon. It has been called "one of the top open clusters in the sky",[1]like a highly resolvedglobular clusterwithout the dense center characteristic of globular clusters.Burnhamnotes that several observers have remarked on its richness, and that although it is smaller thanM46(also an open cluster in Puppis), it is richer and more compact.[2]
Distance
[edit]Burnham cites several published distances, ranging from 700 parsecs (2,300 ly) to 1,900 parsecs (6,200 ly), where "ly" is the abbreviation forlight year.[2]
Notes
[edit]- ^abcde"NGC/IC Project Public Database".Results for NGC 2477.Archived fromthe originalon 2012-05-20.Retrieved2010-12-13.
- ^abcdRobert Burnham, Jr. (1978).Burnham's Celestial Handbook.Vol. III. New York: Dover. p.1516.ISBN978-0-486-24065-7.
- ^Stoyan, Ronald; Schurig, Stephan (2014).interstellarum Deep Sky Atlas.Erlangen: Cambridge University Press; Oculum-Verlag GmbH.ISBN978-1-107-50338-0.OCLC920437579.
- ^abc"NGC 2477".SEDS Messier Objects Database.Retrieved2010-12-13.
- ^Jones, K. G. (March 1969). "The search for the nebulae - VI".Journal of the British Astronomical Association.79:213–222.Bibcode:1969JBAA...79..213J.
External links
[edit]
- NGC 2477 onWikiSky:DSS2,SDSS,GALEX,IRAS,Hydrogen α,X-Ray,Astrophoto,Sky Map,Articles and images
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