[vsnet-chat 3889] Re id. of LMC star HDE 269927

["Mati Morel" <morel@ozemail.com.au>]

Recent posts, prompted by observations made by Sebastian Otero, revolve
around the LMC star HDE 269927. This star lies within the cluster+nebula NGC
2074.  HDE 269927, at 10th mag., is one of the brightest members, and there
several nearby companions within 30"  In such situations, especially the
Magellanic Clouds, correct identification is vital.  The position of HDE
269927, precessed forward from 1900, is (2000) 5h38m59s  -69d29.0'.  It is
also listed as Sk-69 249 (B0.5 I).

The Tycho catalogue seems to have misidentified HDE 269927. It is of mag.
11.1, sp. B, according to the HDE, and is a good match for GSC 9167.759,
positionally,   GSC 9167.383 lies 7s due east and is too faint (12.43V) to
be considered as the HDE star. In my personal annotated file of LMC HDE
stars I have an approximate mag. (10.6V) for HDE 269927, and this is more
consistent with available data for GSC 9167.759.

It is advisable to get a chart of high resolution and detail when observing
these crowded regions. Guide7, for example, is unlikely to display all
stars, and, as Brian Skiff indicated, reference to an actual image or photos
can be more helpful.
In my own studies of the Magellanic Clouds at least three atlases have
appeared within the last twenty years. The atlas "LMC Selected Areas" charts
many of the clusters, or "busy" areas of the LMC.  For more info. please
visit my website at
http://vsnet.ozemail.com.au/~morel/index.html

Regards,
Mati Morel

email : morel@ozemail.com.au
web :  http://vsnet.ozemail.com.au/~morel

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