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HD 158411


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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.

Double star observations at the Lamont-Hussey Observatory of the University of Michigan at Bloemfontein, South Africa.
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Osservazione e dati astrometrici

Costellazione:Scorpione
Ascensione retta:17h31m20.98s
Declinazione:-45°00'38.5"
Magnitudine apparente:9.739
Moto proprio RA:7.6
Moto proprio Dec:-10.8
B-T magnitude:10.549
V-T magnitude:9.806

Cataloghi e designazioni:
Nomi esatti
HD 1989HD 158411
TYCHO-2 2000TYC 8342-2436-1
USNO-A2.0USNO-A2 0375-32255697
HIPHIP 85748
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