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HD 108850


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A method for the correction of proper motions of stars around an extragalactic object in photographic astrometry
Abstract image available at:http://adsabs.harvard.edu/cgi-bin/nph-bib_query?1991A&A...241..303D&db_key=AST

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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Membro dei seguenti gruppi:

Osservazione e dati astrometrici

Costellazione:Vergine
Ascensione retta:12h30m28.62s
Declinazione:+00°34'27.9"
Magnitudine apparente:9.28
Moto proprio RA:-1.2
Moto proprio Dec:-1.6
B-T magnitude:10.558
V-T magnitude:9.386

Cataloghi e designazioni:
Nomi esatti   (Edit)
HD 1989HD 108850
TYCHO-2 2000TYC 289-845-1
USNO-A2.0USNO-A2 0900-07167599
HIPHIP 61030
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