Frank G. Lemoine

TL;DR: In 2008, the MESSENGER spacecraft passed within 200 km of the surface of Mercury, and Doppler tracking of the spacecraft through the flybys provided new data on the planet's gravity field as mentioned in this paper.

TL;DR: In this article, the authors extend this work to all DORIS satellites and propose a complete set of empirical solar radiation parameter coefficients, and show that the proposed strategy allows a significant reduction of systematic errors at periods of 118 days and 1 year (up to 20mm).

TL;DR: In this article, the authors investigated the seasonal changes of the Earth's gravity field from GRACE satellites and the comparison with surface gravity measurements in Europe from the Global Geodynamics Project (GGP) sub-network, as well as with recent hydrology models for continental soil moisture and snow.

TL;DR: A 3200-kilometers-long profile of Mercury studied by the Mercury Laser Altimeter on the MESSENGER spacecraft spans ∼20% of the near-equatorial region of the planet, implying a variation of equatorial shape that is at least partially compensated.

TL;DR: In this paper, the sea level signals at 28 tide gauges that are colocated with DORIS geodetic stations were analyzed, and a median difference of 1.8 mm/yr and a weighted root-mean-square difference of 2.7mm/yr were found.