Royal H. Frost discovered IC 4402 = F. 1099 on 13 May 1904 at Harvard's Arequipa station. He noted "Streak, 2.9' by 0.4' at 125°, tapers to sharp points."

300/350mm - 12.5" (6/24/06 - Haleakala Crater): at 180x, this edge-on appeared fairly faint, very elongated 5:1 NW-SE, ~3.5'x0.7', broad concentration to a bulging core. Situated in a rich star field with a number of faint stars nearby including two mag 14 stars at the NW tip, a mag 13 star at off the SE end, a mag 14 star that is embedded just NW of the core and a mag 13.5 star off the NE side of the core. Located 23' SE of mag 3.6 Iota Lupi.

400/500mm - 18" (7/5/05 - Magellan Observatory, Australia): at 228x, this surprisingly bright and large IC galaxy seemed out of place in a very rich Lupus star field. The galaxy is very elongated 5:1 NW-SE, 4'x0.8', with an irregular or mottled surface brightness (probably due to an equatorial dust lane which bisects the galaxy), though there was no visible core. It nearly extends between a mag 13 star near the SE end and a pair of mag 14 stars just beyond the NE tip. Located 6' NE of mag 9.4 HD 125568 and 23' SE of mag 3.6 Iota Lupi.

Notes by Steve Gottlieb