NGC 809

ConstellationCetus

Right ascension02^h 04^m 18.97^s[1]

Declination−08° 44′ 07.06″^[1]

Redshift0.01781±0.00001^[2]

NGC 809
Observation data (J2000 epoch)
Constellation	Cetus
Right ascension	02h 04m 18.97s[1]
Declination	−08° 44′ 07.06″[1]
Redshift	0.01781±0.00001[2]
Heliocentric radial velocity	5,292 km/s[2]
Distance	245.14 ± 0.29 Mly (75.16 ± 0.09 Mpc)[3]
Apparent magnitude (B)	14.66[4]
Characteristics
Type	(R)S0^+?[5]
Size	~108,500 ly (33.27 kpc) (estimated)[5]
Apparent size (V)	1.23′ × 0.92′[6]
Other designations
6dF J0204190-084407, NGC 809, MCG -02-06-023, PGC 7889[7]

NGC 809 is a lenticular galaxy located in the constellation Cetus about 245 million light-years (75 Mpc) away from the Milky Way.^[3] It was discovered by the American astronomer Lewis Swift in November 1886.^[8] The galaxy is receding from the Milky Way with a line of sight velocity component of 5,292 km/s.^[2]

The morphological classification of NGC 809 is (R)S0+:, indicating an outer ring structure (R) around a lenticular galaxy (S0). The galaxy has a miniature central bar structure with weakly-developed spiral arms. There is a very red ring structure that is likely dust rich. This symmetrical ring was probably formed by the impact of a satellite on the central part of the galaxy.^[4]