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RA: 14h 27m 47s
Dec: −59° 38′ 24″
Ch: MSA:985, U2:430, SA:25
Ref: SIMBAD, DAML02, Archinal&Hynes (2003)
Type: open cluster, 13p
Mag: B=7.95, V=7.7
James Dunlop discovered this object from Paramatta, New South Wales, and included it as No. 313 in his catalogue of 1827. Using a 9-inch f/12 telescope, he described it as "a very minute group of small stars, about 2' long, extended in the parallel of the equator."
Observed by Sir John Herschel at the Cape of Good Hope with an 18-inch f/13 speculum telescope. He recorded it as "a small close group of large and small stars, forming a cluster."
Trumpler (Lick Obs Bul, Vol 14, No. 420) gives the diameter as 2.2' and the class as 2 2 p.
"Cat. of Open Cl. south of -45° Decl.", Mem. 17 Mnt Stromlo Obs.
Vogt. N. & Moffat, AFJ (1973), "Southern Open Star Clusters III." Astron.Astrophys.Suppl., 10, 135-193. [image, table]
d= 1.91 kpc, earliest Sp = B0.5
The RNGC (Sulentic and Tifft 1973) notes that this is a 10.0 mag open cluster.
15cm - br knot of *s led by m9 *. brtr *s concen in bar elong NE-SW. 140x shows
20 *s in 2' area concen in bar. neat obj. BS, 26Feb1990, LCO.
The Messier objects
The Bennett objects
The Caldwell list
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