NGC 2477

NGC 2477
NGC 2477
	Open cluster NGC 2477 in Puppis
Observation data (J2000 epoch)
Right ascension	07h 52m 09.8s
Declination	−38° 32′ 00″
Distance	~ 3600 ly (~ 1100 pc)
Apparent magnitude (V)	5.8
Apparent dimensions (V)	27′
Physical characteristics
Other designations	Caldwell 71, Cr 165
Associations
Constellation	Puppis
	See also: Open cluster, List of open clusters

NGC 2477 (also known as Caldwell 71 or the Termite Hole Cluster^[3]) is an open cluster in the constellation Puppis. It contains about 300 stars,^[4] and was discovered by Abbé Lacaille in 1751.^[4]^[5] The cluster's age has been estimated at 700 million years.^[4]

Visual appearance

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 resolved globular cluster without the dense center characteristic of globular clusters. Burnham notes that several observers have remarked on its richness, and that although it is smaller than M46 (also an open cluster in Puppis), it is richer and more compact.^[2]

Distance

Burnham cites several published distances, ranging from 700 parsecs (2,300 ly) to 1,900 parsecs (6,200 ly), where "ly" is the abbreviation for light year.^[2]

Notes

^ ^a ^b ^c ^d ^e "NGC/IC Project Public Database". Results for NGC 2477. Archived from the original on 2012-05-20. Retrieved 2010-12-13.
^ ^a ^b ^c ^d Robert Burnham, Jr. (1978). Burnham's Celestial Handbook. Vol. III. New York: Dover. p. 1516. ISBN 978-0-486-24065-7.
^ Stoyan, Ronald; Schurig, Stephan (2014). interstellarum Deep Sky Atlas. Erlangen: Cambridge University Press; Oculum-Verlag GmbH. ISBN 978-1-107-50338-0. OCLC 920437579.
^ ^a ^b ^c "NGC 2477". SEDS Messier Objects Database. Retrieved 2010-12-13.
^ 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

NGC 2477 on WikiSky: DSS2, SDSS, GALEX, IRAS, Hydrogen α, X-Ray, Astrophoto, Sky Map, Articles and images

[ngc-ic-project-1] "NGC/IC Project Public Database". Results for NGC 2477. Archived from the original on 2012-05-20. Retrieved 2010-12-13.

[burnham-2] Robert Burnham, Jr. (1978). Burnham's Celestial Handbook. Vol. III. New York: Dover. p. 1516. ISBN 978-0-486-24065-7.

[interstellarum-3] Stoyan, Ronald; Schurig, Stephan (2014). interstellarum Deep Sky Atlas. Erlangen: Cambridge University Press; Oculum-Verlag GmbH. ISBN 978-1-107-50338-0. OCLC 920437579.

[seds-4] "NGC 2477". SEDS Messier Objects Database. Retrieved 2010-12-13.

[Jones_1969-5] Jones, K. G. (March 1969). "The search for the nebulae - VI". Journal of the British Astronomical Association. 79: 213–222. Bibcode:1969JBAA...79..213J.

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v t e Astronomical catalogs
NGC	NGC 2472 NGC 2473 NGC 2474 NGC 2475 NGC 2476 NGC 2477 NGC 2478 NGC 2479 NGC 2480 NGC 2481 NGC 2482
Caldwell	C62 C63 C64 C65 C66 C67 C68 C69 C70 C71 C72 C73 C74 C75 C76 C77 C78 C79 C80
Collinder	Collinder 161 Collinder 162 Collinder 163 Collinder 164 Collinder 165 Collinder 166 Collinder 167 Collinder 168 Collinder 169

v t e Caldwell catalogue
List	C1 C2 C3 C4 C5 C6 C7 C8 C9 C10 C11 C12 C13 C14 C15 C16 C17 C18 C19 C20 C21 C22 C23 C24 C25 C26 C27 C28 C29 C30 C31 C32 C33 C34 C35 C36 C37 C38 C39 C40 C41 C42 C43 C44 C45 C46 C47 C48 C49 C50 C51 C52 C53 C54 C55 C56 C57 C58 C59 C60 C61 C62 C63 C64 C65 C66 C67 C68 C69 C70 C71 C72 C73 C74 C75 C76 C77 C78 C79 C80 C81 C82 C83 C84 C85 C86 C87 C88 C89 C90 C91 C92 C93 C94 C95 C96 C97 C98 C99 C100 C101 C102 C103 C104 C105 C106 C107 C108 C109
See also	Messier Catalogue Catalogue of Nebulae and Clusters of Stars New General Catalogue Index Catalogue Revised New General Catalogue Herschel 400 Catalogue
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