ET.SKY-MAP

HD 99343

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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.
Micrometer Observations of Double Stars and New Pairs - Part Ten Abstract image available at:http://adsabs.harvard.edu/cgi-bin/nph-bib_query?1980ApJS...44..111H&db_key=AST
Mesures d'étoiles doubles faites au réfracteur de 38 cm de l'Observatoire de Nice Not Available
Mesures d'étoiles doubles faites à l'Observatoire de Paris Not Available

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Ýlgili Baðlantýlar

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Gözlemler ve gökölçümü verileri

Takýmyýldýz:	Buyuk Ayi
Sað Açýklýk:	11^h26^m41.25^s
Yükselim:	+66Â°53'44.6"
Görünürdeki Parlaklýk:	8.342
Uzaklýk:	327.869 parsek
özdevim Sað Açýklýk:	-23.2
özdevim Yükselim:	-14.6
B-T magnitude:	8.873
V-T magnitude:	8.386

Kataloglar ve belirtme:

Özgün isimleri
HD 1989	HD 99343
TYCHO-2 2000	TYC 4159-1072-1
USNO-A2.0	USNO-A2 1500-05432325
HIP	HIP 55839

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