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Sottometti un nuovo articolo| New Elements for 80 Eclipsing Binaries II. This research presents new elements for 80 eclipsing binaries found withthe help of the ASAS-3, Hipparcos and TASS databases.
 
 
 |  | 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.
 
 
 |  | 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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 Osservazione e dati astrometrici
| Costellazione: | Scorpione |  | Ascensione retta: | 16h08m17.01s |  | Declinazione: | -17°08'05.3" |  | Magnitudine apparente: | 8.58 |  | Distanza: | 338.983 parsec |  | Moto proprio RA: | -6.6 |  | Moto proprio Dec: | -3.9 |  | B-T magnitude: | 9.57 |  | V-T magnitude: | 8.662 |  Cataloghi e designazioni:
 
 
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