Mars gravity - Additional resolution from Viking Orbiter IDoppler radio tracking data taken from Viking Orbiter I at a 300 km periapsis altitude are now capable of resolving shorter wavelength features such as Olympus Mons and Alba Patera. The number of data is limited as is the area of high resolution which forms a narrow band near 35 deg N latitude. The masses of 71 disks, placed in a geometric pattern on the surface, were estimated. Location of each disk, the mass estimate, and the corresponding uncertainty are given for each disk mass included in the estimator. The new gravity results are compared with previous gravity reductions. The corresponding acceleration surface at 350 km altitude is displayed. It is concluded that systematic postfit residuals imply that further information can be extracted with more detailed modeling.
Document ID
19790055285
Acquisition Source
Legacy CDMS
Document Type
Conference Proceedings
Authors
Sjogren, W. L. (Jet Propulsion Lab., California Inst. of Tech. Pasadena, CA, United States)
Wimberly, R. N. (Jet Propulsion Lab., California Inst. of Tech. Pasadena, CA, United States)
Cain, D. L. (Jet Propulsion Lab., California Inst. of Tech. Pasadena, CA, United States)
Brenkle, J. P. (California Institute of Technology, Jet Propulsion Laboratory, Pasadena Calif., United States)