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HD 158755


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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.

Mesures d'etoiles doubles faites aux lunettes de 74 et 50 CM de l'Observatoire de la Cote d'Azur
We give 657 measurements of double stars, Table 1 by R. Gili with CCDcamera, Table 2 by P. Couteau with filar micrometer. Tables 1 and 2 areonly available in electronic form at the CDS via anonymous ftp tocdsarc.u-strasbg.fr (130.79.128.5) or viahttp://cdsweb.u-strasbg.fr/Abstract.html.

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.

Mesures d'étoiles doubles à Meudon (2^éme série)
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Mikrometermessungen von Doppelsternen. VI.
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Mesures d'étoiles doubles faites au 0,38 m de l'Observatoire de Paris.
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Mesures d'étoiles doubles faites au rĝfraceur de 38 cm de l'Observatoire de Nice
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Observation and Astrometry data

Constellation:Ηρακλής
Right ascension:17h29m18.90s
Declination:+37°57'36.1"
Apparent magnitude:8.503
Distance:154.56 parsecs
Proper motion RA:-5
Proper motion Dec:-0.4
B-T magnitude:8.658
V-T magnitude:8.516

Catalogs and designations:
Proper Names   (Edit)
HD 1989HD 158755
TYCHO-2 2000TYC 3086-900-1
USNO-A2.0USNO-A2 1275-09387318
HIPHIP 85580
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