| NGC 3754 | |
|---|---|
 NGC 3754 | |
| Observation data (J2000epoch) | |
| Constellation | Leo |
| Right ascension | 11h 37m 54.921s |
| Declination | +21d 59m 07.80s |
| Redshift | 0.029952 |
| Heliocentric radial velocity | 8,979 km/s |
| Distance | 447Mly (137Mpc) |
| Group orcluster | Copeland Septet |
| Apparent magnitude (V) | 14.3 |
| Characteristics | |
| Type | SBc |
| Size | 58,000 ly |
| Other designations | |
| PGC 36018,CGCG 127-012N,MCG +04-28-011, VV 282b, Copeland Septet NED07,2MASS J1137549+2159080,SDSS J113754.92+215907.8, HCG 057D, NSA 112842, AGC 210537,NVSS J113754+215910, 2XMM J113755.0+215908,LEDA 36018 | |
NGC 3754 is a smallbarred spiral galaxy[1] located in the constellationLeo.[2] It is located 447 millionlight-years away from theSolar System[3] and was discovered on April 5, 1874, byRalph Copeland.[4]
Theluminosity class of NGC 3754 is II[3] and it is listed as aLINER galaxy bySIMBAD, meaning, a nucleus presenting anemission spectrum characterized by broad lines of weak ionizedatoms.[5]
NGC 3754 is a member of theCopeland Septet which is made up of 7 galaxies discovered by Copeland in 1874.[6] The other members of the group, areNGC 3745,NGC 3746,NGC 3748,NGC 3750,NGC 3751 andNGC 3753.[7]
Halton Arp noticed the 7galaxies in an article published in 1966.[8] This group is designated asArp 320 in which PGC 36010 is part of them.[9]
The 7 galaxies were also observed by Paul Hickson, in which he included them inside his article in 1982.[10] This group is known asHickson 57, in which NGC 3754 is designated as HCG 57D.[11]