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- NGC_457 abstract "NGC 457 (also known as the Owl Cluster, the ET Cluster, or Caldwell 13) is an open star cluster in the constellation Cassiopeia. It was discovered by William Herschel in 1787, and lies over 7,900 light years away from the Sun. It has an estimated age of 21 million years. The cluster is sometimes referred by amateur astronomers as the Owl Cluster, Kachina Doll Cluster, the ET Cluster (due to its resemblance to the movie character) or the "Skiing Cluster".Two bright stars, magnitude 5 Phi-1 Cassiopeiae and magnitude 7 Phi-2 Cassiopeiae can be imagined as eyes. The cluster features a rich field of about 150 stars of magnitudes 12-15.".
- NGC_457 thumbnail NGC457.jpg?width=300.
- NGC_457 wikiPageExternalLink ngc.cgi?ngc457.
- NGC_457 wikiPageID "983438".
- NGC_457 wikiPageLength "2446".
- NGC_457 wikiPageOutDegree "17".
- NGC_457 wikiPageRevisionID "660942282".
- NGC_457 wikiPageWikiLink Amateur_astronomy.
- NGC_457 wikiPageWikiLink Caldwell_catalogue.
- NGC_457 wikiPageWikiLink Cassiopeia_(constellation).
- NGC_457 wikiPageWikiLink Category:Caldwell_objects.
- NGC_457 wikiPageWikiLink Category:Cassiopeia_(constellation).
- NGC_457 wikiPageWikiLink Category:NGC_objects.
- NGC_457 wikiPageWikiLink Category:Open_clusters.
- NGC_457 wikiPageWikiLink Constellation.
- NGC_457 wikiPageWikiLink E.T._the_Extra-Terrestrial.
- NGC_457 wikiPageWikiLink Light-year.
- NGC_457 wikiPageWikiLink Light_year.
- NGC_457 wikiPageWikiLink Open_cluster.
- NGC_457 wikiPageWikiLink Parsec.
- NGC_457 wikiPageWikiLink Sun.
- NGC_457 wikiPageWikiLink William_Herschel.
- NGC_457 wikiPageWikiLink File:NGC457.jpg.
- NGC_457 wikiPageWikiLinkText "457".
- NGC_457 wikiPageWikiLinkText "Collinder 12".
- NGC_457 wikiPageWikiLinkText "NGC 457".
- NGC_457 appmagV "6.4".
- NGC_457 class "-".
- NGC_457 constellation Cassiopeia_(constellation).
- NGC_457 dec "+58° 17′ 27″".
- NGC_457 distLy "7.922".
- NGC_457 distPc "2.429".
- NGC_457 epoch "J2000.0".
- NGC_457 hasPhotoCollection NGC_457.
- NGC_457 massMsol "-".
- NGC_457 name "NGC 457".
- NGC_457 names "-151200.0".
- NGC_457 ra "4772.6".
- NGC_457 sizeV "13".
- NGC_457 vHb "-".
- NGC_457 wikiPageUsesTemplate Template:Caldwell_catalogue.
- NGC_457 wikiPageUsesTemplate Template:Infobox_cluster.
- NGC_457 wikiPageUsesTemplate Template:Ngc5.
- NGC_457 wikiPageUsesTemplate Template:Reflist.
- NGC_457 wikiPageUsesTemplate Template:Star-cluster-stub.
- NGC_457 wikiPageUsesTemplate Template:WikiSky.
- NGC_457 subject Category:Caldwell_objects.
- NGC_457 subject Category:Cassiopeia_(constellation).
- NGC_457 subject Category:NGC_objects.
- NGC_457 subject Category:Open_clusters.
- NGC_457 hypernym Cluster.
- NGC_457 type Language.
- NGC_457 type Catalogue.
- NGC_457 type Object.
- NGC_457 comment "NGC 457 (also known as the Owl Cluster, the ET Cluster, or Caldwell 13) is an open star cluster in the constellation Cassiopeia. It was discovered by William Herschel in 1787, and lies over 7,900 light years away from the Sun. It has an estimated age of 21 million years.".
- NGC_457 label "NGC 457".
- NGC_457 sameAs NGC_457.
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- NGC_457 sameAs m.03wl5c.
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- NGC_457 sameAs NGC_457.
- NGC_457 sameAs Q730450.
- NGC_457 sameAs Q730450.
- NGC_457 sameAs NGC_457.
- NGC_457 wasDerivedFrom NGC_457?oldid=660942282.
- NGC_457 depiction NGC457.jpg.
- NGC_457 isPrimaryTopicOf NGC_457.