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SANTIAGO 91, a right ascension catalogue of 3387 stars (equinox J2000).
The positions in right ascension of 3387 stars belonging to the Santiago67 Catalogue, observed with the Repsold Meridian Circle at Cerro Calan,National Astronomical Observatory, during the period 1989 to 1994, aregiven. The average mean square error of a position, for the wholeCatalogue, is +/-0.009 s. The mean epoch of the catalogue is 1991.84.
| New optical positions and proper motions of late type stars associated with SiO masers
The 33 cm astrograph of the Bordeaux Observatory has been used to derivewith respect to AGK3 reference stars, accurate positions of late typevariable stars variable stars associated with strong SiO maser emission.It is suggested that selected maser stars can be used to link theHIPPARCOS system and the VLBI extragalactic reference frame. The propermotions of the program (SiO) and reference stars are derived and, forthe program stars, are compared to the McCormick catalog of propermotions.
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Gözlemler ve gökölçümü verileri
| Takýmyýldýz: | Su Yilani |
| Sað Açýklýk: | 13h44m51.44s |
| Yükselim: | -27°38'50.8" |
| Görünürdeki Parlaklýk: | 8.778 |
| Uzaklýk: | 132.1 parsek |
| özdevim Sað Açýklýk: | -31.5 |
| özdevim Yükselim: | -28.8 |
| B-T magnitude: | 9.449 |
| V-T magnitude: | 8.834 |
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