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HD 9840


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Photoelectric photometry of selected SAO stars. III
Photometric observations of 131 SAO stars for use in calibrating dataobtained from the Near Infrared Photographic Sky Survey (NIPSS) arereported. The serial numbers of the primary NIPSS program fields inwhich the photometry was done are shown along with the approximateposition of each field and the number of stars observed in each field.The observations are listed, showing the SAO numbers of the programstars, their 1950 equatorial coordinates, the V magnitudes, and the(V-R) and (V-I) color indices. The mean errors in magnitudes and colorindices obtained by averaging deviations from the mean for each star areon the order of 0.02 mag.

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Observation and Astrometry data

Constellation:Perseus
Right ascension:01h37m07.91s
Declination:+51°19'52.3"
Apparent magnitude:8.997
Distance:549.451 parsecs
Proper motion RA:7.3
Proper motion Dec:-3.4
B-T magnitude:9.261
V-T magnitude:9.019

Catalogs and designations:
Proper Names   (Edit)
HD 1989HD 9840
TYCHO-2 2000TYC 3290-509-1
USNO-A2.0USNO-A2 1350-01534499
HIPHIP 7538

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