NGC 3166

NGC 3166
NGC 3166 (right) with NGC 3169 (left) imaged by La Silla Observatory
Observation data (J2000 epoch)
ConstellationSextans
Right ascension10h 13m 45.6784s
Declination+03° 25′ 29.294″
Redshift0.003946±0.000005
Heliocentric radial velocity1,183±1 km/s
Distance61.3 to 71.7 Mly
(18.8 to 22.0 Mpc)
Group or clusterNGC 3166 Group
Apparent magnitude (V)10.5
Characteristics
TypeSAB(rs)0/a
Size~107,900 ly (33.09 kpc) (estimated)
Apparent size (V)4.8′ × 2.3′
Notable featuresInteracting with NGC 3169
Other designations
HOLM 173A, IRAS 10111+0340, UGC 5516, MCG +01-26-024, PGC 29814, CGCG 036-064

NGC 3166 is a lenticular galaxy in the constellation Sextans. The galaxy lies about 65 million light years away from Earth, which means, given its apparent dimensions, that NGC 3166 is approximately 105,000 light years across. It was discovered by William Herschel on December 19, 1783.

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