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HD 207967


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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.

Radial-velocity measurements. V - Ground support of the HIPPARCOS satellite observation program
The paper presents data on 1070 radial velocity measurements of starsdistributed in 39 fields measuring 4 deg x 4 deg. The PPO series ofFehrenbach et al. (1987) and Duflot et al. (1990) is continued using theFehrenbach objective prism method.

New Double Stars Discovered at Nice - Part Sixteen
Abstract image available at:http://adsabs.harvard.edu/cgi-bin/nph-bib_query?1981A&AS...43...79C&db_key=AST

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Observation and Astrometry data

Constellation:Cygnus
Right ascension:21h52m02.50s
Declination:+38°57'16.5"
Apparent magnitude:7.584
Distance:160.772 parsecs
Proper motion RA:92.6
Proper motion Dec:22.8
B-T magnitude:8.878
V-T magnitude:7.691

Catalogs and designations:
Proper Names
HD 1989HD 207967
TYCHO-2 2000TYC 3185-1155-1
USNO-A2.0USNO-A2 1275-16637836
HIPHIP 107934

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