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HD 39581


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Positional reference stars in the Magellanic Clouds
The equatorial coordinates are determined of 926 stars (mainly ofgalactic origin) in the direction of the Magellanic Clouds at the meanepoch T = 1978.4 with an overall accuracy characterized by the meanvalues of the O-C coordinates, Sa = 0.35 arcsec and Sd = 0.38 arcsec,calculated from the coordinates of the Perth reference stars. Thesevalues are larger than the accuracy expected for primary standard stars.They allow the new positions to be considered as those of reliablesecondary standard stars. The published positions correspond to anunquestionable improvement of the quality of the coordinates provided inthe current catalogs. This study represents an 'astrometric step' in thestarting of a 'Durchmusterung' of the Magellanic Clouds organized by deBoer (1988, 1989).

The Large Magellanic Cloud - The third list of stars that belong to the Large Magellanic Cloud and a list of galactic stars
Abstract image available at:http://adsabs.harvard.edu/abs/1981A&AS...46...13F

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Gözlemler ve gökölçümü verileri

Takýmyýldýz:Masa
Sað Açýklýk:05h46m47.54s
Yükselim:-71°36'12.7"
Görünürdeki Parlaklýk:9.288
özdevim Sað Açýklýk:-7.9
özdevim Yükselim:-1.5
B-T magnitude:9.867
V-T magnitude:9.336

Kataloglar ve belirtme:
Özgün isimleri   (Edit)
HD 1989HD 39581
TYCHO-2 2000TYC 9171-1394-1
USNO-A2.0USNO-A2 0150-03683259
HIPHIP 27272

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