NGC 1531

NGC 1531 is a dwarf galaxy in the constellation Eridanus that is interacting with the larger spiral galaxy NGC 1532.^[2] It was discovered by John Herschel on 19 October 1835.^[3] Although technically classified as a peculiar lenticular galaxy, the galaxy's structure is better described as amorphous.^[2]

NGC 1531
NGC 1531 (above) with large barred spiral galaxy NGC 1532
Observation data (J2000 epoch)
Constellation	Eridanus
Right ascension	04h 11m 59.3s[1]
Declination	−32° 51′ 03″[1]
Redshift	1169 ± 29 km/s[1]
Distance	42.4 million light-years
Apparent magnitude (V)	12.9[1]
Characteristics
Type	S0 pec[1]
Size	~15 kly (diameter)
Apparent size (V)	1.3′ × 0.9′[1]
Other designations
PGC 14635[1]

See also

• NGC 4627 - a similar interacting dwarf galaxy
• M51B - a similar interacting dwarf galaxy