M56
| 球状星团 | 球状星团表 |
|---|---|
| 观测资料 (历元 J2000) | |
| 分类 | X |
| 星座 | 天琴座 |
| 赤经 | 19h 16m 35.50s[1] |
| 赤纬 | +30° 11′ 34.9″[1] |
| 距离 | 32.9 kly[2] (10.1 kpc) |
| 视星等 (V) | +8.3 |
| 视直径(V) | 8′.8 |
| 物理性质 | |
| 质量 | ( M☉) |
| 半径 | 42 ly[3] |
| VHB | |
| 估计年龄 | 11.2 Gyr |
| 附记 | |
| 其他名称 | NGC 6779, GCl 110[1] |
M56（也称为NGC 6779）是一个位于天琴座的球状星团，由梅西耶于1779年所发现，距离地球约32,900光年。星团内最亮的恒星为13等，还包括了十余颗变星。
参考资料
- ^ 1.0 1.1 1.2 SIMBAD Astronomical Database. Results for NGC 6779. [2006-11-16]. （原始内容存档于2019-05-01）.
- ^ Ivanov, Valentin D.; Borissova, Jordanka; Alonso-Herrero, Almudena; Russeva, Tatiana. Near Infrared Photometry of Galactic Globular Clusters M56 and M15. Extending the Red Giant Branch vs. Metallicity Calibration Towards Metal Poor Systems. arXiv:astro-ph/0002118. 2000-02-04 [2022-10-27]. （原始内容存档于2022-10-27）.
- ^ distance × sin( diameter_angle / 2 ) = 42 ly. radius
外部链接
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