EntityQ249820· pop 41· linked from 488 articles

Q249820

spiral galaxy in the constellation Cancer

Key facts

Constellation: Cancer
Right ascension: 09 10 20.112
Declination: +07 ° 02 ′ 16.53 ″
Redshift: 0.004 500 ± 0.000 003 34
Heliocentric radial velocity: 1,316.4 ± 13.4 km/s
Distance: 67 Mly (20.5 Mpc )
Type: SAa or SA(r)ab
Size: ~79,000 ly (24.23 kpc ) (estimated)
Apparent size v: 4.3 ′ × 3.3 ′

via Wikipedia infobox

Article

NGC 2775, also known as Caldwell 48, is a spiral galaxy in the constellation Cancer. It is 67 million light-years (20.5 megaparsecs) away from the Milky Way. It was discovered by German-British astronomer William Herschel on 19 December 1783.

This object has a morphological classification of SA(r)ab, which indicates an unbarred spiral galaxy (SA) with a prominent ring structure (r) and flocculent, tightly wound spiral arms (ab). The galaxy is inclined by an angle of 44° to the line of sight from the Earth. The galactic nucleus is not active and the large nuclear bulge, which extends out to an angular radius of 0.4′, is relatively gas free. An explanation for the latter could be a high supernova rate. Although star formation is taking place in the dusty outer ring, NGC 2775 does not display any current starburst activity, and the galactic nucleus is virtually free of any star formation whatsoever.