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HD 104334

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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.
ICCD speckle observations of binary stars. 11: Measurements during 1991-1993 from the Kitt Peak 4 M telescope One-thousand one-hundred ninety-seven observations of 730 binary starsystems, observed by means of speckle interferometry with the 4 mtelescope on Kitt Peak, are presented. Included in these binary starsare new interferometric companions to five visual binaries. Thesemeasurements, made mostly during the period 1991 to 1993, comprise the11th installment of results stemming from our speckle program at the 4 mclass telescopes on Kitt Peak, Cerro Tololo, and Mauna Kea.
ICCD speckle observations of binary stars. V - Measurements during 1988-1989 from the Kitt Peak and the Cerro Tololo 4 M telescopes Abstract image available at:http://adsabs.harvard.edu/cgi-bin/nph-bib_query?1990AJ.....99..965M&db_key=AST
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
Micrometer observations of double stars.8. Abstract image available at:http://adsabs.harvard.edu/cgi-bin/nph-bib_query?1975ApJS...29..315H&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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Osservazione e dati astrometrici

Costellazione:	Orsa Maggiore
Ascensione retta:	12^h00^m59.45^s
Declinazione:	+43Â°47'27.5"
Magnitudine apparente:	9.545
Moto proprio RA:	28.9
Moto proprio Dec:	-28.5
B-T magnitude:	10.075
V-T magnitude:	9.589

Cataloghi e designazioni:

Nomi esatti	(Edit)
HD 1989	HD 104334
TYCHO-2 2000	TYC 3019-1041-1
USNO-A2.0	USNO-A2 1275-08017413
HIP	HIP 58600

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