NGC/IC Project Restoration Effort

(This is a very very beta version)



Basic Information

Location and Magnitude

Right Ascension: 10:38:50.5
Declination: -11:38:56
Constellation: SEX
Visual Magnitude: 13.0

Historic Information

Discoverer: Leavenworth
Year of discovery: 1887
Discovery aperture: 26.3


Summary description: eF, pS, mE 160°, * np end
Sub-type: Sc

Corwin's Notes

===== NGC 3321 = NGC 3322. This was first found by Ainslie Common with his 36-inch reflector that finally ended up at Lick Observatory (where it was known as the "Crossley Reflector" after Edward Crossley, the intermediate owner who was persuaded to give it to Lick. The story is told in the Introduction to Volume VIII of the Lick Publications, the volume of beautifully-reproduced photographs taken with that telescope by James Keeler). Common claims in his short paper in Copernicus that this -- and about 30 other new nebulae -- were found in 1880. He estimated the position; his RA is OK, but his Dec is off. Seven years later, on Jan 3, Francis Leavenworth came across the galaxy with the 26-inch refractor at Leander McCormick. Like many of the positions of the objects found there, the RA is off, but the Dec is pretty good. Both Common and Leavenworth, by the way, provided adequate descriptions of the galaxy, noting the star to the northwest. Leavenworth seems to have confused east and west, though, at least as far as the position angle of the galaxy is concerned. He recorded it as 160 degrees, while the actual angle is close to 20 degrees, a simple quadrant error. Herbert Howe was the first to note the probable identity of the objects, making NGC 3322 (the entry with Common's name on it) "not seen on two nights." It's pretty clear, though, there being no other galaxy as bright within 30 arcmin, that both Common and Leavenworth found the same object.

Steve's Notes

===== NGC 3321 18" (3/29/03): faint, fairly small, diffuse, elongated nearly 3:2 SSW-NNE, 0.7'x0.5', low surface brightness halo, weak concentration. A mag 13.5 star is at the NW edge. Located 2.9' N of a mag 11 star on the Hydra-Sextans border.