NGC 3750

NGC 3750 is a barred lenticular galaxy^[1] located in the constellation of Leo.^[2][3] It is located 450 million light years away from Earth.^[4] and was discovered by Ralph Copeland on February 9, 1874.^[5]

NGC 3750
NGC 3750 with NGC 3753 beneath it
Observation data (J2000 epoch)
Constellation	Leo
Right ascension	11h 37m 51.637s
Declination	+21d 58m 27.26s
Redshift	0.030258
Heliocentric radial velocity	9,071 km/s
Distance	450 Mly (138 Mpc)
Group or cluster	Copeland Septet
Apparent magnitude (V)	13.9
Surface brightness	23.7 mag/arcsec
Characteristics
Type	SAB0?, E-S0
Size	156,000 ly
Other designations
PGC 36011, CGCG 127-009, VV 282c, MCG +04-28-008, Copeland Septet NED04, HCG 057C, 2MASS J11375165+2158272, SDSS J113751.63+215827.2, NSA 112843, 2XMM J113751.7+215827, LEDA 36011

NGC 3750 has a surface brightness of magnitude 23.7^[2] and is classified a LINER galaxy by SIMBAD, meaning it has a nucleus, presenting an emission spectrum characterized by broad lines of weakly ionized atoms.^[6]

Copeland Septet

NGC 3750 is a member of the Copeland Septet which is made up of 7 seven galaxies discovered by Copeland.^[7] The other members are NGC 3745, NGC 3746, NGC 3748, NGC 3751, NGC 3753 and NGC 3754.^[8]

Halton Arp noticed the galaxies in the group, whom he published in his article in 1966.^[9] This group is designated as Arp 320 along with another galaxy, PGC 36010.^[10]

This group was also observed by Paul Hickson whom he included in his article in 1982.^[11] The group is known as Hickson 57, in which NGC 3750 is designated is HCG 57C.^[12]