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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.

Photoelectric radial velocities, Paper XIII - 406 ninth-magnitude K0 stars in the Clube Selected Areas
Radial velocities are given for 406 ninth-magnitude late-type stars. Thestars are grouped in 10 small regions located on a systematic plan atGalactic latitudes of + or - 35 deg. Each star has been observed atleast twice, and the mean velocities are accurate to about less than 1km/s. Thirty spectroscopic binaries have been discovered; orbits havealready been given for 13 of them, and observations of the others arecontinuing.

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Dades d'Observació i Astrometria

Constel·lació:Lynx
Ascensió Recta:08h40m44.24s
Declinació:+34°49'13.8"
Magnitud Aparent:8.651
Distancia:143.266 parsecs
Moviment propi RA:9.6
Moviment propi Dec:-29.9
B-T magnitude:9.788
V-T magnitude:8.745

Catàlegs i designacions:
Noms Propis
HD 1989HD 73662
TYCHO-2 2000TYC 2487-1383-1
USNO-A2.0USNO-A2 1200-06112609
HIPHIP 42583

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