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Speckle observations with PISCO in Merate - III. Astrometric measurements of visual binaries in 2005 and scale calibration with a grating mask
We present relative astrometric measurements of visual binaries madeduring the first semester of 2005, with the Pupil Interferometry SpeckleCamera and Coronagraph (PISCO) at the 102-cm Zeiss telescope of theBrera Astronomical Observatory, in Merate. We performed 214 newobservations of 192 objects, with angular separations in the range0.2-4.3arcsec, and with an average accuracy of 0.01arcsec. Most of theposition angles could be determined without the usual 180°ambiguity, and their mean error is . Our sample contains orbital couplesas well as binaries whose motion is still uncertain. The purpose of thislong-term programme is to improve the accuracy of the orbits andconstrain the masses of the components.For the first time with PISCO, the astrometric calibration was made witha grating mask mounted at the entrance of the telescope. The advantageof this procedure is to provide a reliable and fully independent scaledetermination.We have found two possible new triple systems: ADS 7871 and KUI 15. Wepropose a preliminary orbit for ADS 4208.

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. XVII. Measurements During 1993-1995 From the Mount Wilson 2.5-M Telescope.
Abstract image available at:http://adsabs.harvard.edu/cgi-bin/nph-bib_query?1997AJ....114.1639H&db_key=AST

Mesures de vitesses radiales. VIII. Accompagnement AU sol DU programme d'observation DU satellite HIPPARCOS
We publish 1879 radial velocities of stars distributed in 105 fields of4^{\circ} \times 4^{\circ}. We continue the PPO series \cite[(Fehrenbachet al. 1987;]{Feh87} \cite[Duflot et al. 1990, 1992 and 1995),]{Du90}using the Fehrenbach objective prism method. Table 1 only available inelectronic form at CDS via to cdsarc.u-strasbg.fr (130.79.128.5) or viahttp://cdsweb.u-strasbg.fr/Abstract.html

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

ICCD speckle observations of binary stars. IV - Measurements during 1986-1988 from the Kitt Peak 4 M telescope
One thousand five hundred and fifty measurements of 1006 binary starsystems observed mostly during 1986 through mid-1988 by means of speckleinterferometry with the KPNO 4-m telescope are presented. Twenty-onesystems are directly resolved for the first time, including newcomponents to the cool supergiant Alpha Her A and the Pleiades shellstar Pleione. A continuing survey of The Bright Star Catalogue yieldedeight new binaries from 293 bright stars observed. Corrections tospeckle measures from the GSU/CHARA ICCD speckle camera previouslypublished are presented and discussed.

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

Measures of 313 doubles stars.
Abstract image available at:http://adsabs.harvard.edu/cgi-bin/nph-bib_query?1963AJ.....68..114W&db_key=AST

Measures of double stars.
Not Available

Mesures d'étoiles doubles faites à l'Observatoire de Paris
Not Available

Measures of double stars.
Abstract image available at:http://adsabs.harvard.edu/cgi-bin/nph-bib_query?1956AJ.....61..162W&db_key=AST

Mesures d'étoiles doubles faites à Strasbourg en 1954
Not Available

Mesures d'étoiles doubles effectuées au réfracteur de 38 cm. de l'Observatoire de Nice
Not Available

Observations of double stars in 1952.
Abstract image available at:http://adsabs.harvard.edu/cgi-bin/nph-bib_query?1954AJ.....59..132W&db_key=AST

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Dades d'Observació i Astrometria

Constel·lació:Bootes
Ascensió Recta:14h22m01.21s
Declinació:+51°06'40.8"
Magnitud Aparent:7.912
Distancia:151.515 parsecs
Moviment propi RA:17.1
Moviment propi Dec:44.9
B-T magnitude:8.384
V-T magnitude:7.951

Catàlegs i designacions:
Noms Propis   (Edit)
HD 1989HD 126126
TYCHO-2 2000TYC 3478-1200-1
USNO-A2.0USNO-A2 1350-08418751
HIPHIP 70222

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