| 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] | |
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]
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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]
