NGC 3370

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NGC 3370
NGC 3370 Hi.jpg
Spiral galaxy NGC 3370. Credit: NASA/ESA
Observation data (J2000 epoch)
Constellation Leo
Right ascension 10h 47m 04.0s[1]
Declination +17° 16′ 25″[1]
Redshift 1279 ± 4 km/s[1]
Distance 98 Mly
Type SA(s)c[1] III[citation needed]
Apparent dimensions (V) 3′.2 × 1′.8[1]
Apparent magnitude (V) 12.3[1]
Notable features Dusty
Other designations
UGC 5887,[1] PGC 32207, Silverado Galaxy[citation needed]
See also: Galaxy, List of galaxies

NGC 3370 (also known as UGC 5887 or Silverado Galaxy[2]) is a spiral galaxy about 98 million light-years away in the constellation Leo. It is comparable to our own Milky Way both in diameter (100,000 light years) and mass (1011 solar masses). NGC 3370 exhibits an intricate spiral arm structure surrounding a poorly defined nucleus.


NGC 3370 was likely discovered by William Herschel, who provided it with the designation II 81.[3] His son John later designated it 750. William Herschel cataloged I 80 to NGC 3348[3] before and II 82 to NGC 3455 after NGC 3370.[3]

The object has a surface brightness of 13 and a position angle (PA) of 140°.

On November 14, 1994, S. Van Dyk and the Leuschner Observatory Supernova Search discovered a supernova in NGC 3370 at 10h 44m 21.52s +17° 32′ 20.7′′, designated SN 1994ae.[4] SN 1994ae was a type Ia supernova, and one of the nearest and best observed since the advent of modern digital detectors.[citation needed] The maximal light of the supernova was estimated to have occurred between November 30 and December 1[citation needed], peaking at visual magnitude 13.[4]

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