Parameter | Value | Ref. |
(![]() ![]() ![]() |
![]() |
1 |
(![]() ![]() |
(
![]() ![]() |
1 |
distance | 1.7 kpc | 2 |
core radius ![]() |
0.53 pc | 3 |
half mass radius ![]() |
2.3 pc | 3 |
tidal radius | 21 pc | 3 |
![]() |
-1.07 | 4 |
Present-day Total Mass | 63 000 ![]() |
5 |
Age | 12 Gyr | 6 |
Radial velocity | 70.29 km s-1 | 7 |
1 Djorgovski & Meylan (1993); 2 Peterson et al. (1995); 3 Trager et al. (1993); 4 Marino et al. (2008); 5 Richer et al. (2004); 6 Hansen et al. (2004); 7 this work. |