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HD 144653


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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.

Measurements of binary stars performed at Nice (Second series)
Abstract image available at:http://adsabs.harvard.edu/cgi-bin/nph-bib_query?1984A&AS...57..467M&db_key=AST

Visual multiples. VII - MK classifications
Classifications are given for 865 components of visual multiples; theyshow no systematic differences from the MK system, and the random errorsare one subclass in type and two-thirds of a luminosity class. It isfound that at least 1% of the F-type IV and V stars are weak-lined, 32%of the A4-F1 IV and V stars are Am, and 5% of the A0-A3 IV and V starsare early-type Am. Attention is called to the large fraction (55%) ofthe A3-A9 III-V stars that are of luminosity classes III or IV, unlikethe percentage (16%) at neighboring types.

Mesures d'étoiles doubles faites au réfracteur de 30 cm. de l'Observatoire de Neuchatel
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Observation and Astrometry data

Constellation:りゅう座
Right ascension:16h03m28.39s
Declination:+61°20'36.3"
Apparent magnitude:8.596
Distance:483.092 parsecs
Proper motion RA:16.8
Proper motion Dec:-13.1
B-T magnitude:8.858
V-T magnitude:8.618

Catalogs and designations:
Proper Names   (Edit)
HD 1989HD 144653
TYCHO-2 2000TYC 4189-679-1
USNO-A2.0USNO-A2 1500-06019628
HIPHIP 78658

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