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Submit a new article| 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.
 
 
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 Observation and Astrometry data
| Constellation: | Scorpius |  | Right ascension: | 15h50m16.44s |  | Declination: | -25°32'00.9" |  | Apparent magnitude: | 9.447 |  | Proper motion RA: | -4.5 |  | Proper motion Dec: | -74.3 |  | B-T magnitude: | 10.189 |  | V-T magnitude: | 9.509 |  Catalogs and designations:
 
 
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