MK 501 (Markarian 501)

13.9 mag; RA: 16h 53m 52.2s Dec: +3945'37" (HER)

and PGC 3129592 (above, larger, 15.9 mag), PGC 3129591 (above, smaller, 17.6 mag), PGC 3129580 (upper left, 17.2 mag), PGC 2155805 (upper right, 17.3 mag), PGC 3129561 (lower left edge, 17.1 mag), PGC 2154507 (lower right, 17.8 mag), PGC 2153945 (bottom, 16.9 mag)

MK 421

MK 501 (Markarian 501)