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HD 136838


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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.

Four-colour and H-beta photometry for early type stars in three southern galactic regions
Abstract image available at:http://adsabs.harvard.edu/cgi-bin/nph-bib_query?1980A&AS...41...85L&db_key=AST

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Osservazione e dati astrometrici

Costellazione:Bilancia
Ascensione retta:15h23m43.92s
Declinazione:-27°57'06.6"
Magnitudine apparente:8.946
Distanza:427.35 parsec
Moto proprio RA:-14
Moto proprio Dec:-8.8
B-T magnitude:9.338
V-T magnitude:8.979

Cataloghi e designazioni:
Nomi esatti   (Edit)
HD 1989HD 136838
TYCHO-2 2000TYC 6771-564-1
USNO-A2.0USNO-A2 0600-18000012
HIPHIP 75343
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