NGC 4013

NGC 4013 is an edge-on barred spiral galaxy about 55 million light-years away in the constellation Ursa Major. The disk of NGC 4013 shows a distinct "peanut"-shaped bulge in long exposure photographs that N-body computer simulations suggest is consistent with a stellar bar seen perpendicular to the line of sight.^[4]

Infrared image of the galaxy showing a ring of heavy star formation

NGC 4013
HST closeup view of NGC 4013
Observation data (J2000 epoch)
Constellation	Ursa Major
Right ascension	11h 58m 31.13s[1]
Declination	+43° 56′ 50.1″[1]
Redshift	831 ± 1 km/s[1]
Distance	60.6 ± 8.1 Mly (18.6 ± 2.5 Mpc)[2]
Apparent magnitude (V)	12.1B[1]
Characteristics
Type	SBa[1]
Apparent size (V)	5.2' x 1.0'[1]
Other designations
UGC 6963,[1] PGC 37691[1] LEDA 37691[3] 2MFGC 9412[3] IRAS 11559+4413[3] 2MASX J11583141+4356492[3] MCG+07-25-009[3] UZC J115831.5+435651[3]

A recent deep color image of NGC 4013 revealed a looping tidal stream of stars extending over 80 thousand light-years from the Galactic Center. This structure is thought to be the remnants of a smaller galaxy that was torn apart by tidal forces as it collided with NGC 4013.^[5]

Supernova SN 1989Z was discovered on December 30, 1989 at apparent magnitude 12.^[6]

NGC 4013 is a member of the Ursa Major Cluster.^[7] It is a member of the NGC 4111 Group,^[8] which is part of the Ursa Major Cloud and is the second largest group in the cloud after the NGC 3992 Group.^[9][10][11]

See also

• Cigar Galaxy