2001A&A...371..766G


C.D.S. - SIMBAD4 rel 1.7 - 2020.10.24CEST17:44:24

2001A&A...371..766G - Astronomy and Astrophysics, volume 371, 766-770 (2001/5-4)

Space-VLBI phase-reference mapping and astrometry.

GUIRADO J.C., ROS E., JONES D.L., LESTRADE J.-F., MARCAIDE J.M., PEREZ-TORRES M.A. and PRESTON R.A.

Abstract (from CDS):

We present 5 GHz space-VLBI observations of the quasar pair B1342+662/B1342+663 that demonstrate the feasibility of phase-reference techniques using an antenna in space. The space-based data were taken by the satellite HALCA, of the space-VLBI mission VSOP. From residual (referenced) phases we derive an upper bound of 10 meters to the uncertainty of the spacecraft orbit reconstruction. An analysis of the phase-reference maps of the sources additionally suggests that the above mentioned uncertainty is likely not larger than 3 meters. With errors of this magnitude, HALCA is a useful tool for astrometric studies of close pairs of radio sources.

Abstract Copyright:

Journal keyword(s): astrometry - techniques: interferometric - quasars: individual: B1342+662 - quasars: individual: B1342+663

Simbad objects: 3

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Number of rows : 3

N Identifier Otype ICRS (J2000)
RA
ICRS (J2000)
DEC
Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2020
#notes
1 QSO B1342+662 QSO 13 43 45.95957134 +66 02 25.7451011   19.93 19.67 18.87   ~ 62 1
2 6C 134240+662054 QSO 13 44 08.67966687 +66 06 11.6438846   19.4 18.6 19.84   ~ 66 1
3 3C 345 QSO 16 42 58.8100340220 +39 48 36.999540578   16.81 16.59 16.84   ~ 1562 2

    Equat.    Gal    SGal    Ecl

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2020.10.24-17:44:24

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