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TYC 4544-1226-1


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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.

Locations of the components of triple star systems north of +70 deg
Micrometric measurements of triple systems north of +70 deg declinationwere made with the 10.5-inch Fraunhofer refractor of Munich UniversityObservatory. Absolute positions of all measured components were derivedby using the positions of the main stars as given in the catalog AGK3and, in some cases, also in the SAO-catalog.

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Observation and Astrometry data

Constellation:Girafe
Right ascension:09h17m28.06s
Declination:+79°48'37.9"
Apparent magnitude:10.728
Proper motion RA:-18.7
Proper motion Dec:-19.4
B-T magnitude:11.594
V-T magnitude:10.8

Catalogs and designations:
Proper Names
TYCHO-2 2000TYC 4544-1226-1
USNO-A2.0USNO-A2 1650-01364033
HIPHIP 45586

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