NGC 246

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NGC 246
An infrared Spitzer Space Telescope image of NGC 246. Credit: NASA/JPL.
Observation data (Epoch J2000)
Right ascension	00^h 47^m 03.338^s^[1]
Declination	−11° 52′ 18.94″^[1]
Distance	1,600 light-years
Apparent magnitude (V)	8^[2] / 11.8 (central star)^[1]
Apparent dimensions (V)	3.8′^[2]
Constellation	Cetus
Physical characteristics
Radius	2-3 light-years^[3]
Other designations	Skull Nebula,^[4] Pac-Man Nebula,^[5] Caldwell 56
See also: Planetary nebula, Lists of nebulae

NGC 246, known as the Skull Nebula,^[4] is a planetary nebula in the constellation Cetus. The nebula and the stars associated with it are listed in several catalogs, as summarized by the SIMBAD database.^[1] It is roughly 1,600 light-years away.^[6] The nebula's central star is the 12th magnitude^[6] white dwarf HIP 3678.

Among some amateur astronomers, NGC 246 is known as the "Pac-Man Nebula" because of the arrangement of its central stars and the surrounding star field.^[5]

References

↑ 1.0 1.1 1.2 1.3 "SIMBAD Astronomical Database". Results for NGC 246. Retrieved 2006-12-22.
↑ 2.0 2.1 "SEDS NGC Catalog Online". Results for NGC 246. Retrieved 2010-11-29.
↑ "NGC 246". Astronomy: Stars & Planets. Retrieved 2013-01-07.
↑ 4.0 4.1 "The Night Sky", Astronomy Now, Oct 2008.
↑ 5.0 5.1 David H. Levy, Deep Sky Objects, Prometheus Books, 2005, ISBN 1-59102-361-0, p 129.
↑ 6.0 6.1 Stephen James O'Meara, The Caldwell Objects, Sky Publishing Corporation, ISBN 0-933346-97-2, p 223.

External links

NGC 246 on WikiSky: DSS2, SDSS, GALEX, IRAS, Hydrogen α, X-Ray, Astrophoto, Sky Map, Articles and images

NGC 246 acquired using the Schulman 0.8m Telescope atop Mount Lemmon, AZ. This is a full color (visual) image.

NGC 246 acquired using the Schulman 0.8m Telescope atop Mount Lemmon, AZ. This is a full color (visual) image.

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

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

v t e New General Catalogue 1 to 499

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Astronomical catalog List of NGC objects

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