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TYC 885-1159-1


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Hipparcos astrometry for 257 stars using Tycho-2 data
We present improved Hipparcos astrometry for 257 Hipparcos stars,resolved into 342 components. For 64 of the stars no astrometry wasobtained in the Hipparcos Catalogue, while for the remaining starsadditional components have been added by this solution or the positionshave been revised considerably. We have used the published Hipparcostransit data for the new solutions, together with results from thesecond reduction of the Tycho data for defining better initial values.Based on observations made with the ESA Hipparcos astrometry satellite.Table 3 is only available in electronic form at the CDS via anonymousftp to cdsarc.u-strasbg.fr (130.79.128.5) or viahttp://cdsweb.u-strasbg.fr/Abstract.html

A photometric study of wide visual double stars with significant relative proper motion
Photometric observations and uvby H-beta indices of 142 wide visualdouble stars are presented. Calibrations of the indices are used toderive MK class, color excess, absolute magnitude, effectivetemperature, and distance. The results are used to check candidatesdouble stars for the Hipparcos mission for opticity.

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Osservazione e dati astrometrici

Costellazione:Vergine
Ascensione retta:12h55m28.99s
Declinazione:+11°29'23.9"
Magnitudine apparente:9.062
Moto proprio RA:-86
Moto proprio Dec:19.8
B-T magnitude:9.926
V-T magnitude:9.134

Cataloghi e designazioni:
Nomi esatti   (Edit)
TYCHO-2 2000TYC 885-1159-1
USNO-A2.0USNO-A2 0975-07067379
HIPHIP 63079

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