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The Tokyo PMC catalog 90-93: Catalog of positions of 6649 stars observed in 1990 through 1993 with Tokyo photoelectric meridian circle
The sixth annual catalog of the Tokyo Photoelectric Meridian Circle(PMC) is presented for 6649 stars which were observed at least two timesin January 1990 through March 1993. The mean positions of the starsobserved are given in the catalog at the corresponding mean epochs ofobservations of individual stars. The coordinates of the catalog arebased on the FK5 system, and referred to the equinox and equator ofJ2000.0. The mean local deviations of the observed positions from theFK5 catalog positions are constructed for the basic FK5 stars to comparewith those of the Tokyo PMC Catalog 89 and preliminary Hipparcos resultsof H30.
| Interstellar Extinction in the Dark Cloud Khavtassi 217 IN Cassiopeia
The Vilnius photometric system has been applied for the investigation ofinterstellar extinction in the area of dark cloud Khavtassi 217 inCassiopeia. On the ground of photoelectric photometry of 152 stars,their photometric spectral types, absolute magnitudes, color excesses,interstellar extinctions and distances were determined. The area isdivided into two regions with different extinction versus distance run.Distances of the dark clouds are determined.
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