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HD 190331


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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:Sagittarius
Right ascension:20h05m02.11s
Declination:-18°46'16.5"
Apparent magnitude:8.185
Distance:232.019 parsecs
Proper motion RA:8.2
Proper motion Dec:1.7
B-T magnitude:8.65
V-T magnitude:8.224

Catalogs and designations:
Proper Names   (Edit)
HD 1989HD 190331
TYCHO-2 2000TYC 6322-787-1
USNO-A2.0USNO-A2 0675-34845770
HIPHIP 98901
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