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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.
| Light curves of asteroid 51 NEMAUSA during its 1989 apparition
Light curves of 51 Nemausa were obtained during 5 nights in 1989. It isfound that the shape of the light curves of the asteroid is stronglydependent on the phase angle. The maximum amplitude increases from 0.11to 13 m as the phase angle increases from 5.4 to 26.5 deg. The meanvalue of the phase coefficient is 0.045 magnitude/deg.
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Membre dels grups següents:
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Dades d'Observació i Astrometria
| Constel·lació: | Virgo |
| Ascensió Recta: | 11h38m46.71s |
| Declinació: | +07°23'44.7" |
| Magnitud Aparent: | 8.848 |
| Distancia: | 384.615 parsecs |
| Moviment propi RA: | -7.1 |
| Moviment propi Dec: | 14.2 |
| B-T magnitude: | 10.158 |
| V-T magnitude: | 8.957 |
Catàlegs i designacions:
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