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HD 42600

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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.
Mesures d'étoiles doubles faites au rĝfraceur de 38 cm de l'Observatoire de Nice Not Available

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Gözlemler ve gökölçümü verileri

Takýmyýldýz:	獵戶座
Sað Açýklýk:	06^h11^m45.70^s
Yükselim:	+02Â°28'15.9"
Görünürdeki Parlaklýk:	8.246
Uzaklýk:	330.033 parsek
özdevim Sað Açýklýk:	-2.2
özdevim Yükselim:	-7.1
B-T magnitude:	8.196
V-T magnitude:	8.242

Kataloglar ve belirtme:

Özgün isimleri	(Edit)
HD 1989	HD 42600
TYCHO-2 2000	TYC 135-283-1
USNO-A2.0	USNO-A2 0900-02464486
HIP	HIP 29403

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