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RA: 18h 16m 16.52s
Dec: −20° 27′ 2.7″
Ch: MSA:1368, U2:339, SA:22
Type: planetary nebula
Mag: B=?, V=?
The RNGC (Sulentic and Tifft 1973) notes that this is a planetary nebula.
Steve Coe, observing with a 13" f/5.6, notes: "Faint, small, round, no central star even at 320X. This greenish planetary was recognized at 100X, it is about three times the size of the Airy disk. This observation was on a night I rated 8/10 for seeing and 10/10 for transparency."
William P. Clarke (San Diego, California, USA) writes in the The Webb Society Nebulae and Clusters Section Report No. 10, July 1992: "Small, faint and just non-stellar. Some contrast enhancement with an O III filter. No central star seen (21-inch f/20, x140, x350)."
The Messier objects
The Bennett objects
The Caldwell list
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