Lee Sohn

Mayall II Mayall II Group of stars in the constellation Andromeda Mayall II, also known as NGC-224-G1, SKHB 1, GSC 2788:2139, HBK 0-1, M31GC J003247+393440 or Andromeda's Cluster, is a globular cluster orbiting M31, the Andromeda Galaxy. Quick facts Observation data (J2000 epoch), Constellation ... Mayall II Hubble Telescope image of Mayall II Observation data (J2000 epoch) Constellation Andromeda Right ascension 00h 32m 46.51s[1] Declination +39° 34′ 39.7″[1] Distance 2.52 ± 0.14 Mly (770 ± 40 kpc) Apparent magnitude (V) +13.81[1] Physical characteristics Mass 1×107[2] M☉ (2×1037 kg) Radius 21.2 ± 1.0 ly (6.5 ± 0.3 pc) (Half light radius rh) and tidal radius 263.2 ± 12.7 ly (80.7 ± 3.9 pc)[3] Estimated age ~ 12 Gyr[2] Other designations SKHB…

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