کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
1781501 | 1022284 | 2012 | 9 صفحه PDF | دانلود رایگان |
Using Chang'E-1 orbital tracking data, in combination with orbital tracking data of SELENE, Lunar Prospector, and historical spacecraft, a lunar gravity field model denoted CEGM02 is developed. Analyses show that due to its higher orbit altitude (200 km), tracking data of Chang'E-1 contribute to the long wavelengths of the lunar gravity field. When compared to SGM100h, formal error of CEGM02 coefficients below degree 5 is reduced by a factor of about 2. Lunar mean moment of inertia is found to be 0.393466±0.000065, which can be served as a strong constraint in lunar internal structure research. Lunar potential Love number k2 is estimated to be 0.0242±0.0004 (ten times the formal error), which may provide better constraints on lunar interior by combination with lunar moments of inertia.
► We present a new lunar gravity field model from Chang'E-1 and other satellite data.
► We show that Chang'E-1 orbital tracking data contribute to low and medium degrees.
► The improvements of low and medium degrees are proved by various methods.
Journal: Planetary and Space Science - Volume 62, Issue 1, March 2012, Pages 1–9