NGC 3430

NGC 3430 is a barred spiral galaxy in the constellation of Leo Minor. Its velocity with respect to the cosmic microwave background is 1,869 ± 20 km/s, which corresponds to a Hubble distance of 89.9 ± 6.4 Mly (27.57 ± 1.95 Mpc).^[1] In addition, 22 non-redshift measurements give a distance of 85.97 ± 3.77 Mly (26.359 ± 1.157 Mpc).^[2] It was discovered by German-British astronomer William Herschel on 7 December 1785.^[3]

NGC 3430
NGC 3430 imaged by the Hubble Space Telescope
Observation data (J2000 epoch)
Constellation	Leo Minor
Right ascension	10h 52m 11.3833s[1]
Declination	+32° 57′ 01.358″[1]
Redshift	0.005290[1]
Heliocentric radial velocity	1586 ± 1 km/s[1]
Distance	89.9 ± 6.4 Mly (27.57 ± 1.95 Mpc)[1]
Group or cluster	NGC 3396 Group (LGG 218)
Apparent magnitude (V)	11.6[1]
Characteristics
Type	SAB(rs)c[1]
Size	~112,500 ly (34.50 kpc) (estimated)[1]
Apparent size (V)	4.1′ × 2.2′[1]
Other designations
IRAS 10494+3312, 2MASX J10521141+3257015, UGC 5982, MCG +06-24-026, PGC 32614[1]

NGC 3430 is classified as a well-known example of an SAc spiral galaxy with no central bar structure but has spiral arms found open and clear-defined.^[4] Moreover, it is also a Wolf-Rayet galaxy, with star-forming regions^[5] and forms a pair with NGC 3424, a nearby starburst galaxy.^[6] According to a 1997 study presented by researchers, these galaxies are clearly showing signs of tidal interaction.^[7]

NGC 3396 Group

NGC 3430 is a member of the NGC 3396 group (also known as LGG 218). This group that includes at least 11 galaxies: NGC 3381, NGC 3395, NGC 3396, NGC 3424, NGC 3430, NGC 3442, IC 2604, UGC 5898, PGC 32631, UGC 5934, and UGC 5990.^[8]

Supernovae

Two supernovae have been observed in NGC 3936:

• SN 2004ez (Type II, mag. 17.3) was discovered by Kōichi Itagaki on 15 October 2004.^[9][10]
• PSN J10520833+3256394 (Type IIb, mag. 17.8) was discovered by Kōichi Itagaki on 27 August 2015.^[11]

See also

• List of NGC objects (3001–4000)