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The Pul-3 catalogue of 58483 stars in the Tycho-2 system
A catalogue of positions and proper motions of 58483 stars (Pul-3) hasbeen constructed at the Pulkovo observatory. The Pul-3 is based on theresults of measurements of photographic plates with galaxies (Deutsch'splan). All plates were taken using the Pulkovo Normal Astrograph (thefirst epoch is in the 1950s and the second epoch is in the 1970s).The Pul-3 catalogue contains stars of mainly 12 to 16.5 mag in 146fields with galaxies in the declination zone from -5o to+85o. The Tycho-2 has been used as a reference catalogue.The mean epoch of the Pul-3 is 1963.25. The internal positional accuracyof the Pul-3 catalogue at the mean epoch of observations is ±80mas. The accuracy of the proper motions is mostly within ±3mas/yr to ±12 mas/yr. Comparisons of the Pul-3 with Tycho-2 andARIHIP have been done at the mean epoch of the Pul-3. The Pul-3 externalpositional accuracy relative to Tycho-2 is ±150 mas.The catalogue is only available in electronic form at the CDS viaanonymous ftp to cdsarc.u-strasbg.fr (130.79.128.5) or viahttp://cdsweb.u-strasbg.fr/cgi-bin/qcat?J/A+A/418/357
| Proper motions of Hipparcos stars in two plate areas.
Not Available
| Determination of highly precise proper motions for 32 HIPPARCOS stars from photographic plates.
Not Available
| Improvement of proper motions for HIPPARCOS stars with photographic plates
In this paper, using the PPM catalog as a preliminary reference catalog,we have reduced 17 exposures on nine plates taken with the 40-cmrefractor at the Zo-Se Station of the Shanghai Astronomical Observatoryfor about 30 years. By means of the central overlapping technique andthe iterative process, high-precision positions and proper motions of 28PPM stars, including six Hipparcos stars in the region of radio source0316 + 413 are obtained. The mean values of the internal standard errorsof proper motions in right ascension and declination for the sixHipparcos stars are +/-0.00069 sec/yr and +/-0.00070 sec/yr,respectively.
| 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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| Takýmyýldýz: | Kahraman |
| Sað Açýklýk: | 03h20m17.29s |
| Yükselim: | +41°53'49.9" |
| Görünürdeki Parlaklýk: | 8.104 |
| Uzaklýk: | 291.545 parsek |
| özdevim Sað Açýklýk: | 10.6 |
| özdevim Yükselim: | -15.9 |
| B-T magnitude: | 8.455 |
| V-T magnitude: | 8.133 |
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