Venus Spherical Harmonic Gravity Model to Degree and Order 60
Abstract
The Magellan and Pioneer Venus Orbiter radiometric tracking data sets have been combined to produce a 60th degree and order spherical harmonic gravity field. The Magellan data include the highprecision Xband gravity tracking from September 1992 to May 1993 and postaerobraking data up to January 5, 1994. Gravity models are presented from the application of Kaula's power rule for Venus and an alternative a priori method using surface accelerations. Results are given as vertical gravity acceleration at the reference surface, geoid, vertical Bouguer, and vertical isostatic maps with errors for the vertical gravity and geoid maps included. Correlation of the gravity with topography for the different models is also discussed.
 Publication:

Icarus
 Pub Date:
 November 1994
 DOI:
 10.1006/icar.1994.1169
 Bibcode:
 1994Icar..112...42K
 Keywords:

 Gravimetry;
 Gravitational Fields;
 Mathematical Models;
 Planetary Gravitation;
 Spherical Harmonics;
 Venus (Planet);
 Acceleration (Physics);
 Data Correlation;
 Geoids;
 Magellan Project (Nasa);
 Pioneer Venus 1 Spacecraft;
 Radiometric Resolution;
 Superhigh Frequencies;
 Topography;
 Lunar and Planetary Exploration