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TYC 1248-19-1


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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).

Photometry of dwarf K and M stars
Broadband photometry in BVRI colors for 120 nearby dwarf K and M starsis presented. The apparent magnitude distributions of Vyssotsky and VanVleck stars with photometry and without photometry are studied. Therelationship between apparent and photoelectric magnitudes is analyzed.The proper motion and transverse velocity of the two star types areexamined and compared.

Dwarf M stars found spectrophotometrically .
Abstract image available at:http://adsabs.harvard.edu/cgi-bin/nph-bib_query?1956AJ.....61..201V&db_key=AST

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Osservazione e dati astrometrici

Costellazione:Toro
Ascensione retta:03h48m32.94s
Declinazione:+15°12'07.2"
Magnitudine apparente:9.525
Distanza:35.199 parsec
Moto proprio RA:98.1
Moto proprio Dec:-88.1
B-T magnitude:10.851
V-T magnitude:9.635

Cataloghi e designazioni:
Nomi esatti   (Edit)
TYCHO-2 2000TYC 1248-19-1
USNO-A2.0USNO-A2 1050-01033943
HIPHIP 17794

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