Abstract
The new analysis of radar observations of inner planets for the time span 1964–1989 is described. The residuals show that Mercury topography is an important source of systematic errors which have not been taken into account up to now. The longitudinal and latitudinal variations of heights of Mercury surface were found and an approximate map of equatorial zone |ϕ|≤120° was constructed. Including three values characterizing global nonsphericity of Mercury surface into the set of parameters under determination allowed to improve essentially all estimates. In particular, the variability of the gravitational constantG was evaluated:
. The correction to Mercury perihelion motion:
and linear combination of the parameters of PPN formalism:
were determined; they are in a good agreement with General Relativity predictions. The obtained values Δ.π and ν correspond to the negligible solar oblateness, the estimate of solar quadrupole moment being:
.
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Afanas'eva, T.I., Kislik, M.D., Kolyuka, Yu.F. and Tikhonov, V.F.: 1990,Astronomichesky Zh. 67, 1326.
Canuto, V.M., Hsieh, S.-H. and Owen, J.R.: 1979,Monthly Notices Roy. Astron. Soc. 188, 829.
Damour, T. and Taylor, J.H.: 1991,Astrophys. J. 366, 501.
Harmon, J.K., Cambell, D.B., Bindschadler, D.L., Head, J.W. and Shapiro, I.I.: 1985,Lunar and Planet Sci. 16, 318.
Hellings, R.W., Adams, P.J., Anderson, J.D., Keesey, M.S., Lau, E.L., Standish, E.M., Canuto, V.M. and Goldman, I.: 1983,Phys. Rev. Lett. 51, 1609.
Hellings, R.W., Adams, P.J., Anderson, J.D., Keesey, M.S., Lau, E.L., Standish, E.M., Canuto, V.M. and Goldman, I.: 1989,Int. J. Theor. Phys. 28, 1035.
Krasinsky, G.A., Aleshkina, E.Yu., Pitjeva, E.V. and Sveshnikov, M.L.: 1985,IAU Symp. 114, Leningrad, pp. 315–328.
Krasinsky, G.A., Pitjeva, E.V., Sveshnikov, M.L. and Chunayeva, L.I.: 1992, ‘The Motion of Major Planets from Observations 1769–1988 and Some Astronomical Constants’,Cel. Mech. (in press).
Pitjeva, E.V.: 1982,Bul. Inst. Theoret. Astron. 15, 169.
Reasenberg, R.D.: 1983,Philos. Trans. Roy. Soc., London ser. A,310, 227.
Robertson, D.S., Carter, W.E. and Dillinger, W.H.: 1991, ‘A New Measurement of Solar Gravitational Deflection of Radio Signals Using VLBI’,Proceedings of the AGU Chapman Conf. “Geodetic VLBI: Monitoring global change”, Washington, April 22–26, pp. 203–212.
Standish, E.M.: 1990,Astron. Astrophys. 233, 252.
Zohar, S. and Goldstein, R.M.: 1974,Astron. J. 79, 85.
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Pitjeva, E.V. Experimental testing of relativistic effects, variability of the gravitational constant and topography of Mercury surface from radar observations 1964–1989. Celestial Mech Dyn Astr 55, 313–321 (1993). https://doi.org/10.1007/BF00692991
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DOI: https://doi.org/10.1007/BF00692991