NGC 925

NGC 925
300px NGC 925 imaged with the 32 inch telescope at Mount Lemmon Observatory
Observation data (J2000 epoch)
Constellation	Triangulum
Right ascension	02h 27m 16.913s
Declination	+33° 34′ 43.97″
Redshift	553 ± 3 km/s
Helio radial velocity	564 km/s
Distance	30.3 ± 2.3 million light years (9.29 ± 0.69 Mpc)
Group or cluster	NGC 1023 Group
Type	SB(s)d
Apparent dimensions (V)	10′.5 × 5′.9
Apparent magnitude (V)	10.7
Other designations
PGC 009332, UGC 01913

File:NGC925HunterWilson.jpg

NGC 925 is a barred spiral galaxy located about 30 million light-years away in the constellation Triangulum. The morphological classification of this galaxy is SB(s)d, which indicates that this has a bar structure and loosely wound spiral arms with no ring. The spiral arm to the south is stronger than the northern arm, with the latter appearing flocculent and less coherent. The bar is offset from the center of the galaxy and is the site of star formation all along its length. Both of these morphological traits—a dominant spiral arm and the offset bar—are typically characteristics of a Magellanic spiral galaxy. The galaxy is inclined at an angle of 55° to the line of sight along a position angle of 102°.

This galaxy is a member of the NGC 1023 Group, a nearby, gravitationally-bound group of galaxies associated with NGC 1023. However, the nearest member lies at least 650,000 ly (200,000 pc) distant from NGC 925. There is a 10 million solar mass (M_☉) cloud of neutral hydrogen attached to NGC 925 by a streamer. It is uncertain whether this is a satellite dwarf galaxy, the remnant of a past tidal interaction, or a cloud of primordial gas.