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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.
| Soft X-ray observations of the binary sigma CR B with HEAO-1
The detection of X-ray emission in the 0.15-2 keV band from the vicinityof the radio-emitting binary star HD 146361 in the binary systemsigma-Corona Borealis, with low-energy detectors of the HEAO A-2experiment, is reported. Graphs are presented that show plots of countrate versus scan angle in half-degree bins, that are obtained from thesuperposition of the 13 source scans. Attention is given to sourceposition and identification as well as to the energy spectrum of thesource.
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| Сазвежђа: | Змија |
| Ректацензија: | 16h01m28.63s |
| Deклинација: | +02°03'51.4" |
| Apparent магнитуда: | 8.24 |
| Даљина: | 704.225 parsecs |
| Proper motion RA: | -11.7 |
| Proper motion Dec: | -3 |
| B-T magnitude: | 9.695 |
| V-T magnitude: | 8.361 |
Каталог и designations:
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