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HD 240450


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Ultraviolet television data from the orbiting astronomical observatory. II - Stellar ultraviolet colors and interstellar extinction
The results from the Celescope Catalog of Ultraviolet StellarObservations (Davis, Deutschman, and Haramundanis 1973) are studied,emphasizing statistical groups and subgroups of stars. In spite of therather large observational errors, the great number of Celescopeobservations make it possible to do that kind of study with reasonableaccuracy. Some stars have ultraviolet colors that differ significantlyfrom those of the group to which they have been assigned on the basis ofground-based observations. An attempt is made to describe the generalproperties of the ultraviolet colors of the stars as observed by theCelescope experiment on board NASA's Orbiting Astronomical Observatory(OAO-2). Besides the direct applicability of these results to thegeneral study of stellar atmospheres and of interstellar extinction,they are also considered as a frame of reference for further studies ofindividual stars and groups of stars.

Etude de la structure galactique a l'aide DU prisme-objectif : une region dans Cas.
Abstract image available at:http://adsabs.harvard.edu/cgi-bin/nph-bib_query?1972A&A....17..253M&db_key=AST

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观测天体数据

星座:仙后座
右阿森松:23h56m15.45s
赤纬:+60°17'33.1"
视星:8.732
距离:370.37 天文距离
右阿森松适当运动:6.2
赤纬适当运动:-4.6
B-T magnitude:9.018
V-T magnitude:8.756

目录:
适当名称
HD 1989HD 240450
TYCHO-2 2000TYC 4281-2017-1
USNO-A2.0USNO-A2 1500-10192699
HIPHIP 118012

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