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Relating the Planetary Ephemerides and the Radio Reference FrameThe positions of Venus, Mars, and Jupiter were obtained in the VLBI radio reference frame by measuring the position of a satellite (natural or artificial) of each planet relative to an extragalactic source in the radio catalogue. From the results for Mars and Venus it is concluded that the offset in right ascension of the radio frame from the dynamical equinox defined in DE200 is 0.00 sec +/- 0.04 sec. The observations for Jupiter imply a correction to its position from DE200 of -0.18 sec +/- 0.04 sec in right ascension and -0.06 +/- 0.05 sec in declination on 1983 April 29. The right ascension of Jupiter relative to the inner planets has been measured independently using Doppler tracking data near Jupiter encounter from Pioneers 10 and 11 and from Voyagers 1 and 2 by tying the tracking station positions, through previous spacecraft missions, to the DE200 ephemerides of the inner planets. This technique yielded a correction to Jupiter's right ascension of -0.22 +/- 0.05 sec, in good agreement with the results from the direct radio measurements.
Document ID
19850018784
Acquisition Source
Legacy CDMS
Document Type
Reprint (Version printed in journal)
Authors
Niell, A. E.
(Jet Propulsion Lab., California Inst. of Tech. Pasadena, CA, United States)
Newhall, X. X.
(Jet Propulsion Lab., California Inst. of Tech. Pasadena, CA, United States)
Preston, R. A.
(Jet Propulsion Lab., California Inst. of Tech. Pasadena, CA, United States)
Berge, G. L.
(California Inst. of Tech. Pasadena, CA, United States)
Muhleman, D. O.
(California Inst. of Tech. Pasadena, CA, United States)
Rudy, D. J.
(California Inst. of Tech. Pasadena, CA, United States)
Campbell, J. K.
(Jet Propulsion Lab., California Inst. of Tech.)
Esposito, P. B.
(Jet Propulsion Lab., California Inst. of Tech.)
Standish, E. M.
(Jet Propulsion Lab., California Inst. of Tech.)
Date Acquired
August 12, 2013
Publication Date
May 15, 1985
Publication Information
Publication: The Telecommun. Data Acquisition Rept.
Subject Category
Communications And Radar
Accession Number
85N27095
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.
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