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HD 169930


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Eight New Small Amplitude Variables
We report the discovery of small amplitude variability of six cool starsand discuss the nature of their light change. Two unsolved variablesdetected by Hipparcos are discussed, too. Six stars of the sample belongto the SRVs, whereas in case of the other two objects variability ismost likely caused by a spotted surface.

Southern open clusters II. UBV and Hbeta photometry of 11 clusters between galactic longitudes 259d and 280d
Abstract image available at:http://adsabs.harvard.edu/cgi-bin/nph-bib_query?1973A&AS....9...97V&db_key=AST

Untersuchung der offenen Sternhaufen IC 4665, NGC 6633, IC 4756
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观测天体数据

星座:蛇夫座
右阿森松:18h26m40.57s
赤纬:+07°28'15.2"
视星:8.364
右阿森松适当运动:-20.5
赤纬适当运动:-8.1
B-T magnitude:9.011
V-T magnitude:8.418

目录:
适当名称   (Edit)
HD 1989HD 169930
TYCHO-2 2000TYC 445-269-1
USNO-A2.0USNO-A2 0900-12837276

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