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HD 197681


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관련 글

Searching for unknown open clusters in the Tycho-2 catalog
We present 11 new open cluster candidates found in a systematic searchfor unknown star clusters using the astrometric and photometric dataincluded in the Tycho 2 catalog. The possible existence of these stellaraggregates is supported by the analysis of proper motions,color-magnitude diagrams, stellar density distributions, and by thevisual inspection of the Digitized Sky Survey (DSS) plates. With thesetools we were able to determine mean absolute proper motions as well aspreliminary reddenings, distances and ages for the majority of thecandidates. We found that most of them are possibly nearby (closer than~ 600 pc) open clusters never studied before.Based on observations of the ESA Hipparcos satellite.Figures 1 and 2 are only available in electronic form athttp://www.edpsciences.org

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관측 및 측정 데이터

별자리:작은여우자리
적경:20h44m35.36s
적위:+23°37'29.9"
가시등급:8.1
거리:4545.455 파섹
적경상의 고유운동:3.6
적위상의 고유운동:-4.1
B-T magnitude:8.041
V-T magnitude:8.096

천체목록:
일반명   (Edit)
HD 1989HD 197681
TYCHO-2 2000TYC 2170-2273-1
USNO-A2.0USNO-A2 1125-16890364
HIPHIP 102374

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