NGC 4013

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Observation data (J2000 epoch)
NGC 4013
A deep color image of NGC 4013. Credit: R Jay Gabany (Blackbird Observatory)
Constellation	Ursa Major
Right ascension	11^h 58^m 31.13^s^[1]
Declination	+43° 56′ 50.1″^[1]
Redshift	831 ± 1 km/s^[1]
Distance	55 Mly^{[citation needed]}
Type	SAb^[1]
Apparent dimensions (V)	0′.08 × 0′.07^[1]
Apparent magnitude (V)	19.2^[1]
Other designations
UGC 6963,^[1] PGC 37691^[1]
See also: Galaxy, List of galaxies

NGC 4013 is an edge-on unbarred spiral galaxy about 55 million light-years away in the constellation Ursa Major. What makes this galaxy so interesting is that, unlike most galaxies, we see this galaxy from its edge, due to its location in respect to us. Were we to see it head on like we see many galaxies in space, it would likely look very much like any other picture of a galaxy.

A recent deep color image of NGC 4013 revealed a looping tidal stream of stars extending over 80 thousand light-years from the galactic core. 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.