NGC 2683

Alt. Designations: NGC 2683
Object Type: spiral galaxy
Constellation: Lynx
Distance: 19 mly
Right Ascension: 08h 52m 41.3s
Declination: +33° 25´ 12"
Visual Magnitude: 9.7
Apparent Dimension: 9.3´ X 2.1´
Best Month To View: Jan

A 10th-magnitude spiral galaxy (type SA(rs)b) in Lynx NGC 2683's recessional velocity of 410 km/sec is too small to yield a reliable estimate of distance, as its peculiar velocity could be a significant part of its overall motion. Ignoring that caveat, its redshift implies a distance of 18 million light years, in reasonable agreement with redshift-independent distance estimates of 18 to 45 million light years. Given its 9.3 by 2.1 arcmin apparent size, the galaxy is about 50 thousand light years across if at the closer distance, and over 100 thousand light years across if the more distant estimate is closer to being correct. (The galaxy's impressive appearance and well-organized structure suggests that the larger size and distance are more likely, but appearances are often misleading.) A study of irregularities in the velocity distribution of stars in the central region suggests that like our own galaxy, NGC 2683 has a barred structure; but because of the galaxy's nearly edge-on presentation, it is impossible to tell that from images. NGC 2683 has a relatively bright core (the reason it is classified as a Seyfert (type Sy2) galaxy), extensive dust clouds outlined by the light of stars scattered throughout its disk, and numerous clusters of hot young blue stars scattered along the spiral arms which are mostly shrouded by the clouds of gas and dust lying in the plane of its galactic equator.