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RA: 07h 50m 20s
Dec: −25° 27′ 12″
Ch: MSA:343, U2:320, SA:19
Ref: SIMBAD, DAML02, Archinal&Hynes (2003)
Type: open cluster, 12m
Mag: B=10.14, V=10
Pismis, P. (1957) "A new galactic cluster in Puppis" June, No. 6.
"A faint galactic cluster at RA 7h47m and declination -25012' (1900) discovered on Schmidt plates of Tonantzintla Obs. does not seem to have been recorded so far. Starcounts to mag. 16 on a 27-min 103aE plate .. give a diamter of 2' for this lcuster. The brightest star at the center has .. V = 12.05. The total membership is 38. Te cluster probably is of type Im hence it is at a distance of approx. 7 kpcs.
Vogt. N. & Moffat, AFJ (1972), "Southern Open Star Clusters I." Astron.Astrophys.Suppl., 7, 133-167. [image, table]
"In the POSS this cluster appears as a very dense concentration embedded in a rich star field. However, with the 61cm telescope the numerous faint stars between star nos 4 and 6 could not be measured." They derive a distance of 3.87 kpc and deduce that it is "located somewhat outside the extension of the local arm of the Galaxy. ... For this large distance the reddening is extremely small (0.19). This result is not surprising in view of the face that the cluster is situated in a rich and homogenous star field."
Steve Coe, observing with a 13" f/5.6, notes: "Pretty bright, small, pretty rich, very compressed at 165X. 19 stars counted with one of 11th mag and the rest 12 and below. This very compact cluster is in a rich field."
Alldays (22.50S, 20.12E, 770m).
12-inch f/10 SCT (95x, 218x)
Nine very faint magnitude 12 stars in a very tight grouping just slightly outstanding.
The Messier objects
The Bennett objects
The Caldwell list
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