CEGM02: An improved lunar gravity model using Chang’E-1 orbital tracking data

Yan, Jianguo; Goossens, Sander; Matsumoto, Koji; Ping, Jinsong; Harada, Yuji; Iwata, T.; Namiki, Noriyuki; Li, Fēi; Tang, Geshi; Cao, Jianfeng; Hanada, Hideo; Kawano, Naoki

doi:10.1016/j.pss.2011.11.010

Cited by 39 publications

(23 citation statements)

References 20 publications

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“…This mission observed lunar global gravity with highly accurate low-low satellite-to-satellite Ka-band tracking data, resulting in an improvement of the lunar gravity field model precision around 3 orders of magnitude compared with the SELENE models (Zuber et al, 2013;Konopliv et al, 2013;Lemoine et al, 2013). The significant differences between the mean moment inertia from the Lunar Prospector-based models and recent SGM100h and GRGM660PRIM models confirm the improvement of the mean moment of inertia stimulated by the gravity field model (Matsumoto et al, 2010;Yan et al, 2012;Lemoine et al, 2013).…”

Section: Introductionmentioning

confidence: 62%

“…A more advanced inversion will include seismic information. The lunar mean moment of inertia, which is an important quantity to delineate the degree of interior stratified structure including the existence of a core, is derived from degree 2 gravity field coefficients and lunar physical libration parameters (Bills, 1995;Yan et al, 2012). Current improvements to lunar gravity field modeling contribute to a higher accuracy of a lunar mean moment of inertia, and thus improve delineation of the lunar core structure.…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Lunar core structure investigation: Implication of GRAIL gravity field model

Yan¹,

Xu²,

Li³

et al. 2015

Advances in Space Research

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Section: Introductionmentioning

confidence: 62%

Section: Introductionmentioning

confidence: 99%

Lunar core structure investigation: Implication of GRAIL gravity field model

Yan¹,

Xu²,

Li³

et al. 2015

Advances in Space Research

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“…Moreover, abundant uplifts and depressions exist in this unit (Figure 7.). This hints that this is likely the origination area of the lava for Mare Crisium (Yan et al 2012). Crisium Basin may have the mare basalts in different era.…”

Section: Basaltic Volcanismmentioning

confidence: 83%

Potential Geological Significations of Crisium Basin Revealed by Ce-2 Celms Data

Meng

Wang

et al. 2018

Int. Arch. Photogramm. Remote Sens. Spatial Inf. Sci.

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ABSTRACT:Mare Crisium is one of the most prominent multi-ring basins on the nearside of the Moon. In this study, the regolith thermophysical features of Mare Crisium are studied with the CELMS data from CE-2 satellite. Several important results are as follows. Firstly, the current geological interpretation only by optical data is not enough, and a new geological perspective is provided. Secondly, the analysis of the low TB anomaly combined with the (FeO+TiO2) abundance and Rock abundance suggests a special unknown material in shallow layer of the Moon surface. At last, a new basaltic volcanism is presented for Crisium Basin. The study hints the potential significance of the CELMS data in understanding the geological units over the Moon surface.

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“…The first lunar gravity field model that utilized the SELENE tracking data as well as the historic data was the 90th-degree and 90th-order SELENE Gravity Model 90d (SGM90d), presented in 2009 [41], followed the models of 100th and 150th degree and order (SGM100h, SGM100i, and SGM150) [42,43]. In 2007, the first Chinese lunar exploration satellite, Chang'E-1, was launched and provided a lunar gravity model, that is, CEGM02, with a degree and order up to 100 [44]. Compared to the LP series model, the SGM series showed a significant improvement in the precision OD for the lunar far side and presented new gravity anomaly features of the lunar far side.…”

Section: S To Present Daymentioning

confidence: 99%

Evolution of the Selenopotential Model and Its Effects on the Propagation Accuracy of Orbits around the Moon

Song

Kim

Bae

et al. 2017

Mathematical Problems in Engineering

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The current work analyzes the effect of applying different selenopotential models to the propagation of a lunar orbiting spacecraft. A brief evolution history of the selenopotential model is first presented; then, four representative selenopotential models are selected for force modeling. Expected propagation errors are presented with respect to three different circular polar orbits around the Moon. As a result, an expected but rather significant number of orbit propagation errors are discovered. Compared to the solutions obtained using the GRAIL1500E model, the overall 3D propagation errors for a 4-day period could reach up to several tens of kilometers (50 km altitude case with the GLGM2 model) and up to several hundreds of meters (50, 100, and 200 km altitude cases even with the GRAIL660B model). For each different orbiter's altitude, the appropriate ranges of the degree and order of the gravitational harmonic coefficients are also suggested to yield the best propagation performances with respect to the performance obtained with the full harmonic coefficients using the GRAIL1500E model. The results of the current work are expected to serve as practical guidelines for the field of system budget analysis, mission design, mission operations, and the analysis of scientific results.

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CEGM02: An improved lunar gravity model using Chang’E-1 orbital tracking data

Cited by 39 publications

References 20 publications

Lunar core structure investigation: Implication of GRAIL gravity field model

Lunar core structure investigation: Implication of GRAIL gravity field model

Potential Geological Significations of Crisium Basin Revealed by Ce-2 Celms Data

Evolution of the Selenopotential Model and Its Effects on the Propagation Accuracy of Orbits around the Moon

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