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HD 117428


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CCD photometry and astrometry of visual double and multiple stars of the HIPPARCOS Catalogue. II. CCD photometry and differential astrometry of 288 southern ``Intermediate'' systems
We present photometric and astrometric data of about 280 visual doublestars of the ``intermediate'' class, i.e. with angular separationsmainly in the range 2arcsec < rho < 12arcsec . The observationshave been obtained in 1991-92 with a CCD camera attached to the 91 cmDutch telescope at ESO La Silla, Chile. Differential magnitudes of thedouble star components as well as magnitudes and colour indices of theindividual components have been determined in the Cousins V and Ipassbands with an internal error of about 0.005 mag and an externalaccuracy of less than 0.03 mag. In addition, angular separations havebeen secured to an internal accuracy of 0.004arcsec and position anglesto about 0.05degr. Tables 1 to 4 are only available in electronic format the CDS via ftp to cdsarc.u-strasbg.fr (130.79.128.5) or viahttp://cdsweb.u-strasbg.fr/Abstract.html. Based on observationscollected at the European Southern Observatory, La Silla, Chile.

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Osservazione e dati astrometrici

Costellazione:Centauro
Ascensione retta:13h31m31.47s
Declinazione:-57°17'52.5"
Magnitudine apparente:8.963
Distanza:235.849 parsec
Moto proprio RA:-23.5
Moto proprio Dec:-4.4
B-T magnitude:10.328
V-T magnitude:9.076

Cataloghi e designazioni:
Nomi esatti   (Edit)
HD 1989HD 117428
TYCHO-2 2000TYC 8670-41-1
USNO-A2.0USNO-A2 0300-18679798
HIPHIP 65966

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