NGC 632

NGC 632 is a lenticular galaxy in the constellation of Pisces. Its velocity with respect to the cosmic microwave background is 2,868±22 km/s, which corresponds to a Hubble distance of 138.0 ± 9.7 Mly (42.30 ± 2.98 Mpc).^[1] However, eight non-redshift measurements give a closer mean distance of 125.65 ± 6.74 Mly (38.525 ± 2.066 Mpc).^[2] It was discovered by British astronomer John Herschel on 24 September 1830.^[3]

ConstellationPisces

Right ascension01^h 37^m 17.5512^s[1]

Declination+05° 52′ 38.550″^[1]

Redshift0.010567±0.0000200^[1]

Quick facts Observation data (J2000 epoch), Constellation ...

NGC 632
NGC 632 imaged by Legacy Surveys
Observation data (J2000 epoch)
Constellation	Pisces
Right ascension	01h 37m 17.5512s[1]
Declination	+05° 52′ 38.550″[1]
Redshift	0.010567±0.0000200[1]
Heliocentric radial velocity	3,168±6 km/s[1]
Distance	125.65 ± 6.74 Mly (38.525 ± 2.066 Mpc)[2]
Group or cluster	NGC 645 Group (LGG 28)
Apparent magnitude (V)	12.4[1]
Characteristics
Type	S0[1]
Size	~62,100 ly (19.05 kpc) (estimated)[1]
Apparent size (V)	1.0′ × 0.8′[1]
Other designations
IRAS 01346+0537, 2MASX J01371753+0552389, UGC 1157, MCG +01-05-010, Mrk 1002, PGC 6007, CGCG 412-008[1]

Close

NGC 632 has a possible active galactic nucleus, i.e. it has a compact region at the center of a galaxy that emits a significant amount of energy across the electromagnetic spectrum, with characteristics indicating that this luminosity is not produced by the stars.^[4][5]

NGC 632 has a nucleus which shines in the ultraviolet range, and is thus listed in Markarian's catalogue as Mrk 1002.^[6]