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HD 173274


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관련 글

Open clusters with Hipparcos. I. Mean astrometric parameters
New memberships, mean parallaxes and proper motions of all 9 openclusters closer than 300 pc (except the Hyades) and 9rich clusters between 300 and 500 pc have been computed using Hipparcosdata. Precisions, ranging from 0.2 to 0.5 mas for parallaxes and 0.1 to0.5 mas/yr for proper motions, are of great interest for calibratingphotometric parallaxes as well as for kinematical studies. Carefulinvestigations of possible biases have been performed and no evidence ofsignificant systematic errors on the mean cluster parallaxes has beenfound. The distances and proper motions of 32 more distant clusters,which may be used statistically, are also indicated. Based onobservations made with the ESA Hipparcos astrometry satellite

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관측 및 측정 데이터

별자리:뱀자리
적경:18h44m11.63s
적위:+04°50'19.3"
가시등급:9.305
적경상의 고유운동:-1.2
적위상의 고유운동:-2.4
B-T magnitude:9.552
V-T magnitude:9.326

천체목록:
일반명   (Edit)
HD 1989HD 173274
TYCHO-2 2000TYC 455-1697-1
USNO-A2.0USNO-A2 0900-13554740
HIPHIP 91909

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