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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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Observation and Astrometry data

Constellation:Ophiucus
Right ascension:18h26m40.57s
Declination:+07°28'15.2"
Apparent magnitude:8.364
Proper motion RA:-20.5
Proper motion Dec:-8.1
B-T magnitude:9.011
V-T magnitude:8.418

Catalogs and designations:
Proper Names   (Edit)
HD 1989HD 169930
TYCHO-2 2000TYC 445-269-1
USNO-A2.0USNO-A2 0900-12837276
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