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HD 37517


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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.

New binary stars (19th series) discovered at Nice
A total of 209 measurements of 100 visual binaries discovered inobservations with the 50-cm refractor at the Observatoire de Nicebetween April 1983 and October 1984 are presented in a table. The formatis the same as that used in the Lick Observatory index catalog (Jeffersand van den Bos, 1963), and the present list brings the total number ofbinaries discovered at Nice to 2250, from observations of 109,004 stars.

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Observation and Astrometry data

Constellation:Cocher
Right ascension:05h40m59.34s
Declination:+39°03'11.7"
Apparent magnitude:8.812
Distance:196.85 parsecs
Proper motion RA:-3.5
Proper motion Dec:-6.1
B-T magnitude:10.07
V-T magnitude:8.916

Catalogs and designations:
Proper Names   (Edit)
HD 1989HD 37517
TYCHO-2 2000TYC 2911-148-1
USNO-A2.0USNO-A2 1275-05312981
HIPHIP 26746

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