UGC 12591 UGC 12591, taken by Hubble Observation data (J2000 epoch) Constellation Pegasus Right ascension 23h 25m 21.7s[1] Declination ±00° 00′ 00″[1] Redshift 0.023179[2] Helio radial velocity 6949 ± 10[2] Distance 394.26 ± 133.84 Mly (120.880 ± 41.036 Mpc)[2] Apparent magnitude (B) 13.90[2] Characteristics Type S0/a[2] Mass 7012190000000000000♠1.9×1012[3] M☉ Apparent size (V) 1.7′ × 0.7′[2] Other designations MGC+05-55-015, PGC 71392