van den Bergh-Hagen 47

Open Cluster van den Bergh-Hagen 47 (presumably Lacaille III.3, = C 0841-479, perhaps IC 2395 = Collinder 192 = C 0839-480), in Vela

Right Ascension 08 : 42.6 (h:m)
Declination -48 : 07 (deg:m)
Distance 3.0 (kly)
Visual Brightness 4.6 (mag)
Apparent Dimension 10 (arc min)

Probably discovered by Lacaille 1751-52. IC 2395 discovered around 1900.

Although often listed as missing Lacaille object, this bright open cluster lies very close to the position and matches well the description of No. III.3 in Lacaille's catalog of 1751-52.

Dreyer's position in the IC deviates significantly, but there is no obvious object at the original IC position. Recent revisions point to an inacuracy, or minor error, in the IC position, so that there is some probability that IC 2395 is identical with this cluster: Wolfgang Steinicke's Corrected IC Catalogue has a position very close to that of this cluster (RA 08:42:30.1, Dec -48:07:32 [2000.0]).

IC 2395 was classified as of Trumpler type II 3 p (Sky Catalogue 2000.0) or II 3 m (Götz). Its brightest star is given with 5.53, and from its bluest main sequence star (of spectral type B5), an age of 16 million years was derived.

  • SIMBAD Data of vdB-Ha 47

    Hartmut Frommert (spider@seds.org)
    Christine Kronberg (smil@lrz.uni-muenchen.de)

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    Last Modification: 6 May 2001, 18:40 MET