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HD 42877


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UBV beta Database for Case-Hamburg Northern and Southern Luminous Stars
A database of photoelectric UBV beta photometry for stars listed in theCase-Hamburg northern and southern Milky Way luminous stars surveys hasbeen compiled from the original research literature. Consisting of over16,000 observations of some 7300 stars from over 500 sources, thisdatabase constitutes the most complete compilation of such photometryavailable for intrinsically luminous stars around the Galactic plane.Over 5000 stars listed in the Case-Hamburg surveys still lackfundamental photometric data.

Far-ultraviolet stellar photometry: A field in Orion
Far-ultraviolet photometry for 625 objects in Orion is presented. Thesedata were extracted from electrographic camera images obtained duringsounding rocket flights in 1975 and 1982. The 1975 images were centeredclose to the belt of Orion while the 1982 images were centeredapproximately 9 deg further north. One hundred and fifty stars fell inthe overlapping region and were observed with both cameras. Sixty-eightpercent of the objects were tentatively identified with known starsusing the SIMBAD database while another 24% are blends of objects tooclose together to separate with our resolution. As in previous studies,the majority of the identified ultraviolet sources are early-type stars.However, there are a significant number for which no such identificationwas possible, and we suggest that these are interesting objects whichshould be further investigated. Seven stars were found which were brightin the ultraviolet but faint in the visible. We suggest that some ofthese are nearby white dwarfs.

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Datos observacionales y astrométricos

Constelación:Orión
Ascensión Recta:06h13m12.10s
Declinación:+00°09'31.9"
Magnitud Aparente:8.603
Distancia:3333.333 parsecs
Movimiento Propio en Ascensión Recta:-6.4
Movimiento Propio en Declinación:-4.1
B-T magnitude:8.675
V-T magnitude:8.609

Catálogos y designaciones:
Nombres Propios
HD 1989HD 42877
TYCHO-2 2000TYC 131-1124-1
USNO-A2.0USNO-A2 0900-02511534
HIPHIP 29524

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