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HD 21460


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CCD astrometry and components instrumental magnitude difference of 432 Hipparcos wide visual double stars
Context: We measured the angular separations, position angles, ΔV, Δ y and Δ I of wide visual double stars during the period2003-2005. At least one component of the double stars in our sample hasan entry in the Hipparcos catalogue. Aims: Our measurements are acontribution to the study of the nature of these double stars. Methods: The northern double stars of the project were observed with the1.2 m telescope of the Kryonerion observatory and the southern with the1.0 m SAAO. We performed multiple-exposure CCD imaging of our targetsand used the standard procedure of data reduction and astrometric CCDcalibrations. Results: We present measurements of 213 northern and 219southern wide binaries.Based on observations made at Kryonerion Observatory of the NationalObservatory of Athens, Greece, and the South African AstronomicalObservatory. Full Table 1 and Tables 2, 3 are only available inelectronic form at the CDS via anonymous ftp to cdsarc.u-strasbg.fr(130.79.128.5) or viahttp://cdsweb.u-strasbg.fr/cgi-bin/qcat?J/A+A/472/1055

A second list of wide visual binaries
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A second list of wide visual binaries
Not Available

Photographic measurements of double stars
In this paper the relative distances and position angles of thecomponents of 170 mostly southern visual double stars are presented. Theresults are obtained using photographic plates taken with the 60 cmdouble refractor of the Bosscha Observatory, Lembang, Indonesia.

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Dades d'Observació i Astrometria

Constel·lació:Fornax
Ascensió Recta:03h26m44.22s
Declinació:-28°33'39.3"
Magnitud Aparent:7.504
Distancia:238.095 parsecs
Moviment propi RA:25.8
Moviment propi Dec:13.2
B-T magnitude:9.066
V-T magnitude:7.633

Catàlegs i designacions:
Noms Propis   (Edit)
HD 1989HD 21460
TYCHO-2 2000TYC 6452-1078-1
USNO-A2.0USNO-A2 0600-01360322
HIPHIP 16053

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