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HD 149700


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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.

Observations of Double Stars. XVIII.
Micrometer observations of 1350 pairs in 1995-1997 are listed.

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Osservazione e dati astrometrici

Costellazione:Ofiuco
Ascensione retta:16h36m51.81s
Declinazione:-07°45'43.9"
Magnitudine apparente:9.785
Moto proprio RA:8.8
Moto proprio Dec:-7.3
B-T magnitude:10.772
V-T magnitude:9.867

Cataloghi e designazioni:
Nomi esatti   (Edit)
HD 1989HD 149700
TYCHO-2 2000TYC 5628-732-1
USNO-A2.0USNO-A2 0750-09873800
HIPHIP 81355

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