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HD 89471


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Rotational modulation of the brightness and the spotted regions of the red dwarfs DK Leo, AD Leo, and GT Peg
The rotational modulation and variability of the mean brightness ofthree poorly studied spotted red dwarfs are considered. Theirphotometric behavior can be described well by a zonal spottedness model.The areas of the spots comprise up to 11-13% of the total stellarsurface, and the spots themselves are 600-1500 K cooler than thesurrounding photosphere.

Spot Photometry of AD Leo in 1992 and 1993
Not Available

Coordinated Observations of AD Leonis
IAUC 5255 available at Central Bureau for Astronomical Telegrams.IAUC 5255 available at Central Bureau for Astronomical Telegrams.

Coordinated Ultraviolet, Optical and Radio Observations of RS CVn and Flare Stars
Not Available

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Observation and Astrometry data

Constellation:Leo
Right ascension:10h19m53.94s
Declination:+20°24'15.3"
Apparent magnitude:7.736
Distance:458.716 parsecs
Proper motion RA:-37.7
Proper motion Dec:0.4
B-T magnitude:9.501
V-T magnitude:7.882

Catalogs and designations:
Proper Names
HD 1989HD 89471
TYCHO-2 2000TYC 1426-1209-1
USNO-A2.0USNO-A2 1050-06256439
HIPHIP 50579
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