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HD 109199


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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.

The distance and structure of the Coalsack. I - Photometric data
The results of UBV and H-beta photometry for 284 stars of spectral typesB to F located in the area of the dark cloud Coalsack are presented.Most of the present stars are brighter than 10.0 mag and are classifiedin the MK system of Houk and Cowley (1975). For each star, the bestvalues for the extinction and distance modulus are provided, withtypical estimated errors of + or - 0.08 mag for the extinction and + or- 0.32 mag for the distance modulus. Possible misclassifications andspectral peculiarities are noted for several of the stars.

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Gözlemler ve gökölçümü verileri

Takýmyýldýz:Sinek
Sað Açýklýk:12h33m34.14s
Yükselim:-66°07'01.4"
Görünürdeki Parlaklýk:7.694
Uzaklýk:387.597 parsek
özdevim Sað Açýklýk:-13.4
özdevim Yükselim:-2
B-T magnitude:7.754
V-T magnitude:7.699

Kataloglar ve belirtme:
Özgün isimleri   (Edit)
HD 1989HD 109199
TYCHO-2 2000TYC 8987-1138-1
USNO-A2.0USNO-A2 0225-14679341
HIPHIP 61294

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