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VRI photometry of wide double stars with A- type primaries.
We are presenting VRI photometry of 93 wide visual double stars havinglate B- or A- type primaries, taken from the Annex of Double andMultiple Stars of the HIPPARCOS Input Catalogue. Spectral types havebeen estimated for most of the primaries and for the majority of thesecondaries. 40% of them probably have common origin components, forwhich we calculated photometric parallaxes and some orbital valuesestimates.
| 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: | Τρόπις |
| Right ascension: | 09h43m16.63s |
| Declination: | -60°01'45.6" |
| Apparent magnitude: | 7.6 |
| Distance: | 588.235 parsecs |
| Proper motion RA: | -13.5 |
| Proper motion Dec: | 3.3 |
| B-T magnitude: | 7.5 |
| V-T magnitude: | 7.592 |
Catalogs and designations:
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