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NGC 457

NGC 457
观测数据 (J2000.0 历元)
分类-
星座仙后座
赤经01h 19m 32.6s
赤纬+58° 17′ 27″
距离7.922 kly (2.429[1] kpc)
视星等 (V)6.4[2]
视直径 (V)13.0′[2]
物理性质
质量- M
VHB-
其他名称(标示)Cr 12, Mel 7, OCL 321, Lund 43, H VII-42, h 97, GC 256,[2] Caldwell 13, Owl Cluster, ET Cluster
相关条目:疏散星团疏散星团列表

NGC 457,或称为猫头鹰星团Owl Cluster)、ET星团ET Cluster)、科德韦尔13Caldwell 13),是位于仙后座疏散星团,由威廉·赫歇尔发现于1787年[2],距离太阳约7900光年。她的年龄约2100万年[1]业余天文学界常称该星团为“猫头鹰星团”、“克奇纳木偶英语Hopi Kachina figures星团”[2]、“ET星团”(外观类似电影E.T.外星人中的外星人角色)、“滑雪星团”。 NGC 457有两颗较亮的恒星,分别是视星等5等的仙后座φ-1和7等的φ-2。该星团大约有150颗视星等12到15等的恒星[2]

参考资料

[编辑]
  1. ^ 1.0 1.1 Frinchaboy, Peter M.; et al. Open Clusters as Galactic Disk Tracers. I. Project Motivation, Cluster Membership, and Bulk Three-Dimensional Kinematics. The Astronomical Journal. 2008, 136: 118–145. Bibcode:2008AJ....136..118F. arXiv:0804.4630可免费查阅. doi:10.1088/0004-6256/136/1/118.  See table I, p. 12.
  2. ^ 2.0 2.1 2.2 2.3 2.4 2.5 NGC 457. The NGC/IC Project Database. [2012-05-09]. (原始内容存档于2012-05-20). 

维基共享资源上的相关多媒体资源:NGC 457

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NGC 457
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