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TYC 3022-331-1


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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.

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Mesures d'etoiles doubles faites a Nice, etoiles doubles nouvelles (24eme serie) decouvertes a Nice.
Table 1 gives 1182 measurements of 682 binaries observed with the 74 and50 cm refractors. Table 2 lists 26 new binaries discovered with the 50cm refractor.

Mesures d'etoiles doubles faites AU refracteur de 38cm de l'Observatoire de Nice.
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Osservazione e dati astrometrici

Costellazione:Cani da Caccia
Ascensione retta:13h06m49.35s
Declinazione:+40°22'26.2"
Magnitudine apparente:10.13
Moto proprio RA:-4.3
Moto proprio Dec:-34.2
B-T magnitude:10.865
V-T magnitude:10.191

Cataloghi e designazioni:
Nomi esatti   (Edit)
TYCHO-2 2000TYC 3022-331-1
USNO-A2.0USNO-A2 1275-08194864
HIPHIP 63992
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