NGC 7006

NGC 7006

Observation data (J2000 epoch)
Class	I^[1]
Constellation	Delphinus
Right ascension	21^h 1^m 29.4^s^[2]
Declination	+16° 11′ 14.4″^[2]
Distance	137×10^³ ly (42 kpc)^[3]
Apparent magnitude (V)	10.6^[4]
Apparent dimensions (V)	2.8′^[4]
Physical characteristics
Mass	7005303000000000000♠3.03×10⁵^[5] M_☉
Metallicity	${\begin{smallmatrix}\left[{\ce {Fe}}/{\ce {H}}\right]\end{smallmatrix}}$ = –1.52^[5] dex
Other designations	Caldwell 42

NGC 7006 (also known as Caldwell 42) is a globular cluster^[2] in the constellation Delphinus. NGC 7006 resides in the outskirts of the Milky Way. It is about 135,000^[6] light-years away, five times the distance between the Sun and the centre of the galaxy, and it is part of the galactic halo. This roughly spherical region of the Milky Way is made up of dark matter, gas and sparsely distributed stellar clusters.

NGC 7006 appears in the science fiction novel Beyond the Farthest Star by Edgar Rice Burroughs, where it is used as a point of reference by the inhabitants of the planet Poloda to determine the approximate location of Earth.^[7]

Gallery

NGC 7006 imaged by Hubble's Advanced Camera for Surveys.

References

↑ Shapley, Harlow; Sawyer, Helen B. (August 1927), "A Classification of Globular Clusters", Harvard College Observatory Bulletin (849): 11–14, Bibcode:1927BHarO.849...11S
1 2 3 "SIMBAD Astronomical Database". Results for NGC 7006. Retrieved 2007-04-21.
↑ Hessels, J. W. T.; et al. (November 2007), "A 1.4 GHz Arecibo Survey for Pulsars in Globular Clusters", The Astrophysical Journal, 670 (1): 363–378, arXiv:0707.1602, Bibcode:2007ApJ...670..363H, doi:10.1086/521780.
1 2 "SEDS NGC Catalog Online". Results for NGC 7006. Retrieved 2010-11-27.
1 2 Boyles, J.; et al. (November 2011), "Young Radio Pulsars in Galactic Globular Clusters", The Astrophysical Journal, 742 (1): 51, arXiv:1108.4402, Bibcode:2011ApJ...742...51B, doi:10.1088/0004-637X/742/1/51.
↑ "A Remote Outpost of the Milky Way". ESA/Hubble Picture of the Week. 12 September 2011. Retrieved 13 September 2011.
↑ Burroughs, Edgar Rice (2012). Beyond the Farthest Star. eStar Books. p. 47. Retrieved 2014-11-19.

External links

NGC 7006 on WikiSky: DSS2, SDSS, GALEX, IRAS, Hydrogen α, X-Ray, Astrophoto, Sky Map, Articles and images

Coordinates: 21^h 01^m 29.4^s, +16° 11′ 14.4″

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

Book:Caldwell catalogue Category:Caldwell objects Portal:Astronomy Commons:Caldwell objects

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