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HD 202540


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Photometry of the Active Stars HD127535 and HD202077
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Local photometric standards for CaII emission stars
UBV data are given for 108 stars which are suitable local standards for52 stars with strong Ca2 emissions. An additional eight stars wererejected as possible standards because of suspected variability.

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Observation and Astrometry data

Constellation:Microscopium
Right ascension:21h17m25.64s
Declination:-30°44'44.5"
Apparent magnitude:6.843
Distance:178.571 parsecs
Proper motion RA:15.7
Proper motion Dec:-3.7
B-T magnitude:8.372
V-T magnitude:6.97

Catalogs and designations:
Proper Names
HD 1989HD 202540
TYCHO-2 2000TYC 7472-722-1
USNO-A2.0USNO-A2 0525-43178829
HIPHIP 105106
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