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HD 164373


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Precise positions in the FK4 system for 120 radio source reference stars
Positions are given in the FK4 system for 120 primary reference starsgrouped around the optical counterparts of 11 extragalactic radiosources. The observations were made in 1979 and 1980 with the 6-in.transit circle of the U.S. Naval Observatory. The results reported hererepresent the first step in a three-tiered process to determineastrometric positions of the optical counterparts referred to the systemof the FK4. One application of such positions is the determination of anearly inertial optical reference frame, which eventually may becompared to a reference frame at radio wavelengths.

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观测天体数据

星座:天龍座
右阿森松:17h54m51.53s
赤纬:+69°13'19.1"
视星:8.403
距离:813.008 天文距离
右阿森松适当运动:-4.8
赤纬适当运动:-5
B-T magnitude:10.013
V-T magnitude:8.536

目录:
适当名称   (Edit)
HD 1989HD 164373
TYCHO-2 2000TYC 4428-1583-1
USNO-A2.0USNO-A2 1575-03877320
HIPHIP 87703

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