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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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观测天体数据

星座:英仙座
右阿森松:01h37m07.91s
赤纬:+51°19'52.3"
视星:8.997
距离:549.451 天文距离
右阿森松适当运动:7.3
赤纬适当运动:-3.4
B-T magnitude:9.261
V-T magnitude:9.019

目录:
适当名称   (Edit)
HD 1989HD 9840
TYCHO-2 2000TYC 3290-509-1
USNO-A2.0USNO-A2 1350-01534499
HIPHIP 7538

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