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HD 162703


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The N2K Consortium. VII. Atmospheric Parameters of 1907 Metal-rich Stars: Finding Planet-Search Targets
We report high-precision atmospheric parameters for 1907 stars in theN2K low-resolution spectroscopic survey, designed to identify metal-richFGK dwarfs likely to harbor detectable planets. Of these stars, 284 arein the ideal temperature range for planet searches,Teff<=6000 K, and have a 10% or greater probability ofhosting planets based on their metallicities. The stars in thelow-resolution spectroscopic survey should eventually yield >60 newplanets, including 8-9 hot Jupiters. Short-period planets have alreadybeen discovered orbiting the survey targets HIP 14810 and HD 149143.

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.

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Gözlemler ve gökölçümü verileri

Takýmyýldýz:Herkul
Sað Açýklýk:17h50m34.21s
Yükselim:+39°31'31.8"
Görünürdeki Parlaklýk:8.422
Uzaklýk:80.775 parsek
özdevim Sað Açýklýk:-3.7
özdevim Yükselim:87
B-T magnitude:8.981
V-T magnitude:8.469

Kataloglar ve belirtme:
Özgün isimleri   (Edit)
HD 1989HD 162703
TYCHO-2 2000TYC 3093-1737-1
USNO-A2.0USNO-A2 1275-09603523
HIPHIP 87323

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