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HD 140557


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UBV photometry of stars whose positions are accurately known.
Photometric indices V, B-V, and U-B were measured for about 560 stars ofthe AGK3R and NPZT catalogs between BD declinations 11 deg and 23 deg,using the 40-cm Cassegrain telescope of the Kvistaberg Observatory fromApril 1986 to May 1987. The observation procedure and the reductiontechnique were the same as in the earlier papers of this series by Oja(1984, 1985, 1986, and 1987). The mean errors were calculated from theinternal consistency of the data. The accuracy was found to be the sameas for the earlier parts of the survey.

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Observation and Astrometry data

Constellation:Όφις
Right ascension:15h43m54.84s
Declination:+12°49'06.2"
Apparent magnitude:8.132
Distance:10000000 parsecs
Proper motion RA:-6.6
Proper motion Dec:9.7
B-T magnitude:10.16
V-T magnitude:8.3

Catalogs and designations:
Proper Names
HD 1989HD 140557
TYCHO-2 2000TYC 938-963-1
USNO-A2.0USNO-A2 0975-07954910
HIPHIP 77041

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