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TYC 2013-91-1


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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.

Meridian observations made in Brorfelde (Copenhagen University Observatory) 1975-76.
This catalogue presents positions for selected faint stars mainly fromAGK3 observed with the 7" transit circle at Brorfelde. The stars aredistributed in 43 selected areas around radio sources and are suitableas reference stars for measuring the optical counterparts to the radiosources. The obscr 'itioi cre carried out from 1975.16 to 1976.04, andevery star was observed at least two times giving a m.s.e. of "13 forthe catalogue positions given in the FK4 system. These positions usedtogether with AGK3 proper motions will in the period 1975 to 1980 have am.s.e. at the epoch ranging from `:13 to `:15, which is less than halfof what is expected when using AGK3 positions. Key words: transit circle- catalogue of positions

Der kugelfoermige Sternhaufen NGC 5466.
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Observation and Astrometry data

Constellation:Bärenhüter
Right ascension:14h08m26.81s
Declination:+29°09'41.6"
Apparent magnitude:9.46
Proper motion RA:-1.2
Proper motion Dec:13.3
B-T magnitude:10.032
V-T magnitude:9.508

Catalogs and designations:
Proper Names
TYCHO-2 2000TYC 2013-91-1
USNO-A2.0USNO-A2 1125-06888220
HIPHIP 69088

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