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HD 239857

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관련 글

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.
A Wide-Angle Astrometric Standard in the Moscow Zenith Zone Not Available
Thirty-five new peculiar stars. Not Available
Etude pour chaque champ de l'absorption et de la repartition des vitesses radiales EN fonction de la distance. Not Available
Mesures de vitesses radiales au spectrographe C de l'Observatoire de Haute Provence Not Available

관련 링크

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관측 및 측정 데이터

별자리:	케페우스자리
적경:	22^h07^m30.06^s
적위:	+56Â°30'30.5"
가시등급:	8.647
거리:	361.011 파섹
적경상의 고유운동:	5
적위상의 고유운동:	-2.5
B-T magnitude:	10.126
V-T magnitude:	8.77

천체목록:

일반명	(Edit)
HD 1989	HD 239857
TYCHO-2 2000	TYC 3977-1854-1
USNO-A2.0	USNO-A2 1425-12843316
HIP	HIP 109213

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