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HD 175637


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The Photometric Variability of Sun-like Stars: Observations and Results, 1984--1995
Using differential Stromgren b, y photometry, we monitored thebrightness variations of 41 program stars and their 73 comparison starsfrom 1984 through 1995. The predominantly main-sequence program starsspanned ranges of temperature and mean chromospheric activity centeredon solar values. About 40% of all the stars showed measurablevariability, typically at levels below 0.01 mag (~1%), on bothnight-to-night and year-to-year timescales. The variability correlatedwith mean chromospheric activity and advancing spectral type. We presentdifferential light curves and statistical descriptions of ourobservations.

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Observation and Astrometry data

Constellation:Αετός
Right ascension:18h56m00.49s
Declination:+07°07'34.5"
Apparent magnitude:7.319
Distance:191.571 parsecs
Proper motion RA:4.9
Proper motion Dec:0.6
B-T magnitude:7.675
V-T magnitude:7.349

Catalogs and designations:
Proper Names
HD 1989HD 175637
TYCHO-2 2000TYC 461-197-1
USNO-A2.0USNO-A2 0900-13700403
HIPHIP 92930

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