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- NGC_281 abstract "NGC 281 is an H II region in the constellation of Cassiopeia and part of the Perseus Spiral Arm. It includes the open cluster IC 1590, the multiple star HD 5005, and several Bok globules. Colloquially, NGC 281 is also known as the Pacman Nebula for its resemblance to the video game character.The nebula was discovered in August 1883 by E. E. Barnard, who described it as "a large faint nebula, very diffuse." The multiple star HD 5005, also called , was discovered by S. W. Burnham. It consists of an 8th-magnitude primary with four companions at distances between 1.4 and 15.7 seconds of arc. There has been no appreciable change in this quintuple system since the first measurements were made in 1875.The nebula is visible in amateur telescopes from dark sky locations.In his book Deep Sky Wonders, Walter Scott Houston describes the appearance of the nebula in small telescopes:There was a faint glow in the immediate vicinity of the multiple star, with an occasional impression of a much larger nebulosity...Its surface brightness was much less than that of M33 in Triangulum or NGC 205, the distant companion of the Andromeda galaxy.".
- NGC_281 thumbnail NGC_281_from_Chandra.jpg?width=300.
- NGC_281 wikiPageExternalLink ap050823.html.
- NGC_281 wikiPageExternalLink opo0613a.html.
- NGC_281 wikiPageID "880686".
- NGC_281 wikiPageRevisionID "573807124".
- NGC_281 absmagV "Unknown".
- NGC_281 caption "NGC 281 in the optical and X rays".
- NGC_281 constellation Cassiopeia_(constellation).
- NGC_281 constellationName "Cassiopeia".
- NGC_281 distLy "9.5".
- NGC_281 epoch "J2000.0".
- NGC_281 hasPhotoCollection NGC_281.
- NGC_281 name "NGC 281".
- NGC_281 names "IC 11, Sharpless 184, Pacman Nebula".
- NGC_281 radiusLy "48.0".
- NGC_281 sizeV "35".
- NGC_281 type Emission_nebula.
- NGC_281 subject Category:Cassiopeia_(constellation).
- NGC_281 subject Category:H_II_regions.
- NGC_281 subject Category:NGC_objects.
- NGC_281 subject Category:Sharpless_objects.
- NGC_281 comment "NGC 281 is an H II region in the constellation of Cassiopeia and part of the Perseus Spiral Arm. It includes the open cluster IC 1590, the multiple star HD 5005, and several Bok globules. Colloquially, NGC 281 is also known as the Pacman Nebula for its resemblance to the video game character.The nebula was discovered in August 1883 by E. E. Barnard, who described it as "a large faint nebula, very diffuse." The multiple star HD 5005, also called , was discovered by S. W. Burnham.".
- NGC_281 label "NGC 281".
- NGC_281 label "NGC 281".
- NGC_281 label "NGC 281".
- NGC_281 label "NGC 281".
- NGC_281 label "NGC 281".
- NGC_281 label "NGC 281".
- NGC_281 label "NGC 281".
- NGC_281 label "NGC 281".
- NGC_281 label "NGC 281".
- NGC_281 label "NGC 281".
- NGC_281 sameAs NGC_281.
- NGC_281 sameAs NGC_281.
- NGC_281 sameAs NGC_281.
- NGC_281 sameAs NGC_281.
- NGC_281 sameAs NGC_281.
- NGC_281 sameAs NGC_281.
- NGC_281 sameAs NGC_281.
- NGC_281 sameAs m.03l8wx.
- NGC_281 sameAs Q641074.
- NGC_281 sameAs Q641074.
- NGC_281 wasDerivedFrom NGC_281?oldid=573807124.
- NGC_281 depiction NGC_281_from_Chandra.jpg.
- NGC_281 isPrimaryTopicOf NGC_281.