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HD 3815


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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).

Sir John Herschel's Observations of Stars in the Small Magellanic Cloud
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Observation and Astrometry data

Constellation:Toucan
Right ascension:00h39m41.14s
Declination:-71°06'13.0"
Apparent magnitude:8.685
Distance:200.803 parsecs
Proper motion RA:33.4
Proper motion Dec:-30.4
B-T magnitude:10.257
V-T magnitude:8.815

Catalogs and designations:
Proper Names   (Edit)
HD 1989HD 3815
TYCHO-2 2000TYC 9138-290-1
USNO-A2.0USNO-A2 0150-00339303
HIPHIP 3120

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