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TYC 2995-797-1


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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.

Micrometer Observations of Double Stars and New Pairs - Part Ten
Abstract image available at:http://adsabs.harvard.edu/cgi-bin/nph-bib_query?1980ApJS...44..111H&db_key=AST

Mesures d'étoiles doubles faites à Nice aux lunettes de 50 et de 74 CM
Abstract image available at:http://adsabs.harvard.edu/cgi-bin/nph-bib_query?1970A&AS....3...51C&db_key=AST

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Osservazione e dati astrometrici

Costellazione:Orsa Maggiore
Ascensione retta:09h39m47.33s
Declinazione:+41°34'54.9"
Magnitudine apparente:10.141
Moto proprio RA:-47.5
Moto proprio Dec:-45.1
B-T magnitude:10.998
V-T magnitude:10.212

Cataloghi e designazioni:
Nomi esatti
TYCHO-2 2000TYC 2995-797-1
USNO-A2.0USNO-A2 1275-07562489
HIPHIP 47426

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