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RA: 19h 42m 27.92s
Dec: +23° 05′ 14.7″
Ch: MSA:1195, U2:162, SA:8
Ref: SIMBAD, Collinder (1931), DAML02, NGC/IC
Type: reflection nebula
Mag: B=15, V=?
Size: 0.5′ x 0.5′
Ced 170 (NGC 6820)
Position (1900): RA 19 38.2, Dec + 22 51
Star: Cl (Mp=13.:, V=13.3:)
Spectrum of nebula: (not classified)
Classification: Neb associated with mainly one star (which may be multiple) - Fan-shaped object (eg. IC 59)
Size: 0.5'x0.5' (approximate)
Notes: "NGC 6820 = GC 5945. Disc. Marth. (114, 194, 550, 578)."
A catalogue of H-II regions. Astrophys.J.Suppl.Ser., 4, 257-279.
Sh 2-86: "NGC 6820. Contains cluster. Part of I Vul assoc."
The RNGC (Sulentic and Tifft 1973) notes that this is a 15.0 mag cluster associated with nebulosity.
= GN 19.40.3, Other designations: GM1-26
Class: CN (cometary nebula)
Photo Index by Jim Lucyk: Vehrenberg's Atlas of Galactic Neb-2 p59, 61, 62.
Alldays (22.50S, 20.12E, 770m).
12-inch f/10 SCT (95x, 218x)
The petite cluster is round in shape and stringe towards the NW. The middle section seems tight with double stars. The soft cloud around it is seen with a 0111 filter, which the slightly more prominent nebulosity towards the south of the cluster.
The Messier objects
The Bennett objects
The Caldwell list
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