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HD 145871


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Radial velocity measurements. IV - Ground-based accompaniment to the HIPPARCOS observation program
The paper presents 396 radial velocities of stars distributed in 19fields of 4 x 4 degrees. The study employs the Fehrenbach objectiveprism method and the same measuring technique used in a previous paper(Fehrenbach et al., 1987).

The improvement of the star positions of the Potsdam PZT catalog
Regular determinations of the right ascension and declination of starswith the aid of a photographic zenith tube (PZT) were begun in ageodetic-astronomical observatory of the German Democratic Republic in1972. Results obtained during the years 1972 and 1973 were used for afirst improvement of stellar positions listed in the Third Catalog(Katalog) of the 'Astronomische Gesellschaft' (Astronomical Society)AGK3. The corrections resulted in a distinct improvement of the accuracyof the positional values. However, the possibility could not be excludedthat the results were still affected by remaining errors with systematiccharacteristics. In order to eliminate the considered deficiencies, newstellar coordinate corrections were computed on the basis of aconsiderably larger data set. The new catalog containing the reviseddata has been called PZT 80, while the data obtained on the basis of thefirst observations are listed in PZT 74. The new catalog is presented inthe appendix.

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Observation and Astrometry data

Constellation:Dragon
Right ascension:16h10m45.41s
Declination:+52°08'13.5"
Apparent magnitude:8.569
Distance:263.158 parsecs
Proper motion RA:28.3
Proper motion Dec:-15.8
B-T magnitude:8.816
V-T magnitude:8.59

Catalogs and designations:
Proper Names
HD 1989HD 145871
TYCHO-2 2000TYC 3497-1231-1
USNO-A2.0USNO-A2 1350-08808114
HIPHIP 79272

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