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TYC 3817-596-1


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Two-colour photometry for 9473 components of close Hipparcos double and multiple stars
Using observations obtained with the Tycho instrument of the ESAHipparcos satellite, a two-colour photometry is produced for componentsof more than 7 000 Hipparcos double and multiple stars with angularseparations 0.1 to 2.5 arcsec. We publish 9473 components of 5173systems with separations above 0.3 arcsec. The majority of them did nothave Tycho photometry in the Hipparcos catalogue. The magnitudes arederived in the Tycho B_T and V_T passbands, similar to the Johnsonpassbands. Photometrically resolved components of the binaries withstatistically significant trigonometric parallaxes can be put on an HRdiagram, the majority of them for the first time. Based on observationsmade with the ESA Hipparcos satellite.

UBVRI photometry of G, K, M HIPPARCOS stars
UBVRI data are presented for a set of 229 late-type stars, most of thembeing high proper motion stars. All these data are part of the InputCatalog planned observations for the Hipparcos mission.

A Search for Metal-Deficient Stars
Abstract image available at:http://adsabs.harvard.edu/cgi-bin/nph-bib_query?1970ApJS...22..117B&db_key=AST

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Observation and Astrometry data

Constellation:おおぐま座
Right ascension:09h50m15.82s
Declination:+57°06'35.0"
Apparent magnitude:9.949
Proper motion RA:22.5
Proper motion Dec:5.9
B-T magnitude:10.551
V-T magnitude:9.999

Catalogs and designations:
Proper Names   (Edit)
TYCHO-2 2000TYC 3817-596-1
USNO-A2.0USNO-A2 1425-07396857
HIPHIP 48257

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