NGC 673

NGC 673 is an intermediate spiral galaxy in the constellation of Aries. Its velocity with respect to the cosmic microwave background is 4894 ± 20 km/s, which corresponds to a Hubble distance of 235.4 ± 16.5 Mly (72.18 ± 5.06 Mpc).^[1] In addition, 31 non redshift measurements give a closer distance of 206.09 ± 5.54 Mly (63.187 ± 1.699 Mpc).^[2] The galaxy was discovered by German-British astronomer William Herschel on 4 September 1786.^[3]

ConstellationAries

Right ascension01^h 48^m 22.4795^s[1]

Declination+11° 31′ 17.323″^[1]

Redshift0.017289^[1]

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

NGC 673
NGC 673 imaged by SDSS
Observation data (J2000 epoch)
Constellation	Aries
Right ascension	01h 48m 22.4795s[1]
Declination	+11° 31′ 17.323″[1]
Redshift	0.017289[1]
Heliocentric radial velocity	5183 ± 1 km/s[1]
Distance	235.4 ± 16.5 Mly (72.18 ± 5.06 Mpc)[1]
Group or cluster	NGC 673 Group (LGG 31)
Apparent magnitude (V)	12.6[1]
Characteristics
Type	SAB(s)c[1]
Size	~137,900 ly (42.27 kpc) (estimated)[1]
Apparent size (V)	2.1′ × 1.7′[1]
Other designations
IRAS 01457+1116, 2MASX J01482246+1131176, UGC 1259, MCG +02-05-033, PGC 6624, CGCG 437-030[1]

Close

According to A.M. Garcia, NGC 673 is the namesake of the NGC 673 Group (also known as LGG 31). This group contains at least 17 galaxies, including IC 156 [fr], IC 162 [fr], NGC 665, NGC 677, NGC 683 [fr], and 11 galaxies from the UGC catalogue.^[4]