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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
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| A homogeneous catalog of new UBV and H-beta photometry of B- and A-type stars in and around the Scorpius-Centaurus OB association
B- and A-type stars in and near the Sco-Cen OB association areinvestigated with UBV and H-beta photometry to acquire data relevant tothe luminosity function of Sco-Cen. The measurements generally consistof two 10-s integrations of U, B, V, (W, N) filters, and theobservations are corrected iteratively for atmospheric extinction andinstrumental response. The data presented give the mean V magnitude,mean B-V, mean U-B, and the estimated uncertainties for these values.The catalog provides a homogeneous catalog of data for a large fieldwith stellar objects delineating membership to the association Sco-Cenand that affect the luminosity function of the aggregate.
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Osservazione e dati astrometrici
| Costellazione: | Bilancia |
| Ascensione retta: | 15h58m15.10s |
| Declinazione: | -15°28'40.5" |
| Magnitudine apparente: | 8.171 |
| Distanza: | 245.7 parsec |
| Moto proprio RA: | -6.2 |
| Moto proprio Dec: | -25.7 |
| B-T magnitude: | 8.614 |
| V-T magnitude: | 8.208 |
Cataloghi e designazioni:
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