Pepper, Brian J.; Yee, Karl Y.; Soibel, Alex; Fisher, Anita M.; Keo, Sam A.; Khoshakhlagh, Arezou; Gunapala, Sarath D.(Pasadena, CA: Jet Propulsion Laboratory, National Aeronautics and Space Administration, 2019, 2019-04-14)
Schubert, G.; Limonadi, D.; Anderson, J. D.; Campbell, J. K.; Giampieri, G.(1994)
Simulated radio tracking data from one flyby of Europa, two flybys of Ganymede, and two flybys of Callisto by the Galileo Orbiter yield estimates of the standard errors in the gravitational coefficient J*** of 44, 8.5, and ...
Deep-space missions some times use close gravity-assist "swingbys" of planets and moons to gain or lose velocity. These maneuvers increase the amount of mass that can be delivered and/or decrease mission flight times. ...
Anderson, J. D.; Lau, E. L.; Sjogren, W. L.; Schubert, G.; Moore, W. B.(1996)
Here we report measurements by the Galileo spacecraft of Ganymede's overall density and the spherical harmonics, J2, and C22, of its gravitational field.
Anderson, J. D.; Lau, E. L.; Sjogren, W. L.; Schubert, G.; Moore, W. B.(1997-03)
Galileo's first encounter with Callisto took place on 4 November 1996, and the gravity signal was detected in the radio Doppler data recorded during the encounter.
Doppler tracking of distant spacecraft is the only method currently available to search for gravitational waves in the low-frequency (~0.0001-0.1 Hz) band. Suppose that the Clock Mission spacecraft is transferred into a ...
Doppler tracking of distant spacecraft is the only method currently available for search for gravitational waves in the low-frequency band. Experiments to date and those planned for the near future all involve