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RA: 20h 11m 18s
Dec: +35° 50′ 0″
Ch: MSA:1149, U2:119, SA:9
Ref: SIMBAD, Collinder (1931), DAML02, Archinal&Hynes (2003)
Type: open cluster, 42mn
Mag: B=?, V=8
Trumpler (Lick Obs Bul, Vol 14, No. 420) gives the diameter as 15' and the class as 4 3 p.
Roslund, C. (1960) Remarks on Some New and Some Known Galactic Clusters. PASP, 72(426), 205. [1960PASP...72..205R]
"The two brightest stars are of type B and show continuous emission in the ultraviolet. Others stars are two OB and three OB- stars, one of type B9 II and several early main sequence A stars."
The RNGC (Sulentic and Tifft 1973) notes that this is a 8.0 mag open cluster.
POSS: pair in pa45. triangle ~3'.5 diam. pair NW fntr (m11,12).
WDS: brtr pair = ADS13486AD: 10.4,10.5; 17"; 52. pair NW = ADS 13490:
10.2,11.5; 8".5; 359, lies 1'.8 NE from -86.
6cm - nothing but a few *s in Milky Way.
15cm - hardly distinguishable from fld @ 80x. BS, 15Oct1990, Anderson Mesa.
25cm - about 1deg E of 27 Cyg. loose grp w/doz *s. br *s form triangle. to NW
and SW are pairs, NW being fntr. 4' diam. 180x.
30cm - 10 *s or so in 5; cl, no concen. roughly triangular w/30" pair in pa45
on S side.
The Messier objects
The Bennett objects
The Caldwell list
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