NGC 1633

ConstellationTaurus

Right ascension04^h 40^m 09.1088^s[1]

Declination+07° 20′ 58.172″^[1]

Redshift0.016632±0.00000700^[1]

NGC 1633
NGC 1633 and NGC 1634 imaged by Pan-STARRS
Observation data (J2000 epoch)
Constellation	Taurus
Right ascension	04h 40m 09.1088s[1]
Declination	+07° 20′ 58.172″[1]
Redshift	0.016632±0.00000700[1]
Heliocentric radial velocity	4,986±2 km/s[1]
Distance	187.87 ± 5.23 Mly (57.600 ± 1.604 Mpc)[1]
Group or cluster	NGC 1762 Group (LGG 120)
Apparent magnitude (V)	14.36[1]
Characteristics
Type	SAB(s)ab[1]
Size	~68,900 ly (21.14 kpc) (estimated)[1]
Apparent size (V)	1.0′ × 0.9′[1]
Other designations
HOLM 079A, IRAS 04374+0715, 2MASX J04400910+0720577, UGC 3125, MCG +01-12-014, PGC 15774, CGCG 419-023[1]

NGC 1633 is an intermediate spiral galaxy in the constellation of Taurus. Its velocity with respect to the cosmic microwave background is 4,930±4 km/s, which corresponds to a Hubble distance of 237.1 ± 16.6 Mly (72.71 ± 5.09 Mpc).^[1] However, three non-redshift measurements give a closer mean distance of 187.87 ± 5.23 Mly (57.600 ± 1.604 Mpc).^[2] It was discovered by German-British astronomer William Herschel on 9 December 1798.^[3][4]