Gravitational experiments on solar probe

Details Gravitational experiments on solar probe Gravitational experiments on solar probe

Sep 1978

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1978clus.nasa...42a&link_type=abstract

In its A Close-up of the Sun p 42-57 (SEE N78-32964 23-92)

Astronomy and Astrophysics

Astronomy

Covariance, Gravitational Effects, Solar Probes, Trajectory Analysis, Cartesian Coordinates, Perihelions, Quadrupoles, Radio Tracking, Relativistic Effects, Solar Interior

Scientific paper

A covariance analysis was performed for a solar probe trajectory which encounters the sun at four solar radii. The unknown parameters in the analysis are the six initial cartesian coordinates for the probe, six initial cartesian coordinates for the earth, the astronomical unit, the solar gravitational quadrupole coefficient and two post Newtonian meters (beta, gamma). Errors in the unknown parameters were computed as a function of standard errors on the radio tracking data and on the nongravitational forces which act on the probe. Results were obtained for several tracking geometries and for several orbital inclinations to the ecliptic. The analysis shows that the principal scientific result from the radio tracking of a solar probe would be the determination of the quadrupole moment, which would place a constraint on models of the solar interior.

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