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TYC 997-1513-1


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Photometry of dwarf K and M stars
An observational program using UBVRI photometry is presented for 688stars from among the dwarf K and M stars already found spectroscopicallyby Vyssotsky (1958). Of these, 211 have not been observedphotometrically. These observations were obtained over a period ofseveral years at the Kitt Peak National Observatory using a GaAsphotomultiplier with an 0.9 m reflector. Based on night-to-nightvariations in the measures of individual stars, the internal errors maybe estimated to be roughly 0.01 mag for the colors and 0.015 for the Vmagnitudes. The photometric parallaxes reported for each star werecomputed in the manner discussed by Weis (1986).

Notes and observations : dwarf M stars found spectrophotometrically .
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Observation and Astrometry data

Constellation:Schlangenträger
Right ascension:17h40m15.20s
Declination:+09°39'53.7"
Apparent magnitude:10.806
Proper motion RA:-6.2
Proper motion Dec:-74.3
B-T magnitude:11.802
V-T magnitude:10.889

Catalogs and designations:
Proper Names
TYCHO-2 2000TYC 997-1513-1
USNO-A2.0USNO-A2 0975-09529479
HIPHIP 86479

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