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Walraven photometry of nearby southern OB associations
Homogeneous Walraven (VBLUW) photometry is presented for 5260 stars inthe regions of five nearby southern OB associations: Scorpio Centaurus(Sco OB2), Orion OB1, Canis Major OB1, Monoceros OB1, and Scutum OB2.Derived V and (B - V) in the Johnson system are included.
| UVBY observations of A, F, G and K field stars
Photoelectric data in the uvby system have been obtained for about 800southern stars of the Hipparcos Input Catalog (Grenon, 1982, 1985). Mostof the stars are F and G main sequence and fall in the magnitude range V= 8-11.
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Observation and Astrometry data
| Constellation: | Ophiuchus |
| Right ascension: | 17h20m39.02s |
| Declination: | -24°42'17.2" |
| Apparent magnitude: | 9.652 |
| Proper motion RA: | 12.5 |
| Proper motion Dec: | 2.1 |
| B-T magnitude: | 11.174 |
| V-T magnitude: | 9.778 |
Catalogs and designations:
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