NGC 7662

NGC 7662
Emission nebula
Planetary nebula
	A Hubble Space Telescope (HST) image of NGC 7662.; Credit: HST/NASA/ESA.
Observation data: J2000 epoch
Right ascension	23h 25m 54s
Declination	+42° 32′ 6″
Distance	~2000-6000 ly
Apparent magnitude (V)	8.6
Apparent dimensions (V)	37″
Constellation	Andromeda
Physical characteristics
Radius	0.8 ly
Designations	PK 106-17 1, GCRV 14695, PN ARO 20, Blue Snowball Nebula, Snowball Nebula, Caldwell 22
	See also: Lists of nebulae

NGC 7662 (also known as the Blue Snowball Nebula, Snowball Nebula, and Caldwell 22) is a planetary nebula located in the constellation Andromeda.

NGC 7662 is a popular planetary nebula for casual observers. A small telescope will reveal a star-like object with slight nebulosity. A 6" telescope with a magnification around 100x will reveal a slightly bluish disk, while telescopes with a primary mirror at least 16" in diameter may reveal slight color and brightness variations in the interior.

The central star of the planetary nebula is an O-type star with a spectral type of O(H).^[4]

Image gallery[]

References[]

^ The Hubble European Space Agency Information Centre Hubble picture of NGC 7662 Archived 2007-09-27 at the Wayback Machine
^ ^a ^b "NGC 7662". SIMBAD. Centre de données astronomiques de Strasbourg. Retrieved 2007-04-10.
^ (2005). Atlas of the Night Sky. Collins. ISBN 978-0-00-717223-8.
^ González-Santamaría, I.; Manteiga, M.; Manchado, A.; Ulla, A.; Dafonte, C.; López Varela, P. (2021). "Planetary nebulae in Gaia EDR3: Central star identification, properties, and binarity". Astronomy & Astrophysics. 656: A51. arXiv:2109.12114. Bibcode:2021A&A...656A..51G. doi:10.1051/0004-6361/202141916. S2CID 237940344.

External links[]

Media related to NGC 7662 at Wikimedia Commons
NGC 7662 on WikiSky: DSS2, SDSS, GALEX, IRAS, Hydrogen α, X-Ray, Astrophoto, Sky Map, Articles and images

Coordinates: 23^h 25^m 54^s, +42° 32′ 6″

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[1] The Hubble European Space Agency Information Centre Hubble picture of NGC 7662 Archived 2007-09-27 at the Wayback Machine

[simbad-2] "NGC 7662". SIMBAD. Centre de données astronomiques de Strasbourg. Retrieved 2007-04-10.

[nightsky-3] (2005). Atlas of the Night Sky. Collins. ISBN 978-0-00-717223-8.

[4] González-Santamaría, I.; Manteiga, M.; Manchado, A.; Ulla, A.; Dafonte, C.; López Varela, P. (2021). "Planetary nebulae in Gaia EDR3: Central star identification, properties, and binarity". Astronomy & Astrophysics. 656: A51. arXiv:2109.12114. Bibcode:2021A&A...656A..51G. doi:10.1051/0004-6361/202141916. S2CID 237940344.

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v t 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
Category:Caldwell objects Portal:Astronomy Commons:Caldwell objects

v t New General Catalogue 7500 to 7840
7501 7503 7510 7513 7522 7531 7537 7538 7544 7552 7555 7565 7582 7583 7585 7592 7600 7603 7606 7610 7613 7614 7616 7619 7635 7640 7654 7662 7666 7667 7668 7669 7670 7673 7674 7679 7686 7714 7715 7723 7727 7741 7742 7752 7753 7759 7767 7772 7773 7777 7789 7790 7793 7812 7814 7815 7816 7822 7830 7835 7836 7837 7838 7839 7840
Astronomical catalog List of NGC objects Index Catalog

NGC 7662

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See also[]

References[]

External links[]