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NGC 4833

NGC 4833
球状星团 球状星团表
观测资料
(历元 J2000)
分类 VIII
星座 苍蝇座
赤经 12h 59m 34.98s[1]
赤纬 -70° 52′ 28.6″[1]
距离 21.2 kly (6.5 kpc)
视星等 (V) +7.79[1]
视直径(V) 13′.5
物理性质
质量 ( M)
半径 42 ly[2]
VHB
估计年龄 15 Gyr
附记
其他名称 GCl 21,[1] Lacaille I.4
Dunlop 164, Bennett 56

NGC 4833尼可拉·路易·拉卡伊在1751年至1752年在南非旅行途中发现的球状星团,并在1755登录在星表内。它随后也被詹姆士·丹露帕约翰·赫歇尔观测和收录至星表内,它们的仪器可以将恒星解析出来。

这个球状星团在非常南边的苍蝇座,距离地球21,200光年。它的一部分被银河盘面多灰尘的区域遮蔽著,在修正尘埃的红化之后,他仍然比M5M92的年龄大了20亿岁。

参考资料

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  1. ^ 1.0 1.1 1.2 1.3 SIMBAD Astronomical Database. Results for NGC 4833. [2006-11-17]. (原始内容存档于2019-05-01). 
  2. ^ distance × sin( diameter_angle / 2 ) = 42 ly. radius
  1. CCD Photometry of the Globular Cluster NGC 4833 and Extinction Near the Galactic Plane, Melbourne et al, 25 September 2000, Astrophysics Journal

外部链接

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NGC 4833
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