M56
| 球狀星團 | 球狀星團表 |
|---|---|
| 觀測資料 (曆元 J2000) | |
| 分類 | X |
| 星座 | 天琴座 |
| 赤經 | 19h 16m 35.50s[1] |
| 赤緯 | +30° 11′ 34.9″[1] |
| 距離 | 32.9 kly[2] (10.1 kpc) |
| 視星等 (V) | +8.3 |
| 視直徑(V) | 8′.8 |
| 物理性質 | |
| 質量 | ( M☉) |
| 半徑 | 42 ly[3] |
| VHB | |
| 估計年齡 | 11.2 Gyr |
| 附記 | |
| 其他名稱 | NGC 6779, GCl 110[1] |
M56（也稱為NGC 6779）是一個位於天琴座的球狀星團，由梅西耶於1779年所發現，距離地球約32,900光年。星團內最亮的恆星為13等，還包括了十餘顆變星。
參考資料
[编辑]- ^ 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
外部連結
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