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HD 236134

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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

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Osservazione e dati astrometrici

Costellazione:	Cassiopea
Ascensione retta:	23^h28^m32.81^s
Declinazione:	+55Â°24'12.2"
Magnitudine apparente:	9.268
Moto proprio RA:	4
Moto proprio Dec:	-4.9
B-T magnitude:	9.483
V-T magnitude:	9.286

Cataloghi e designazioni:

Nomi esatti	(Edit)
HD 1989	HD 236134
TYCHO-2 2000	TYC 4003-1895-1
USNO-A2.0	USNO-A2 1425-15130959
HIP	HIP 115872

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