کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
8138975 | 1523561 | 2014 | 8 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
New constraints on Mars rotation determined from radiometric tracking of the Opportunity Mars Exploration Rover
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
علوم زمین و سیارات
علوم فضا و نجوم
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![عکس صفحه اول مقاله: New constraints on Mars rotation determined from radiometric tracking of the Opportunity Mars Exploration Rover New constraints on Mars rotation determined from radiometric tracking of the Opportunity Mars Exploration Rover](/preview/png/8138975.png)
چکیده انگلیسی
The Opportunity Mars Exploration Rover remained stationary between January and May 2012 in order to conserve solar energy for running its survival heaters during martian winter. While stationary, extra Doppler tracking was performed in order to allow an improved estimate of the martian precession rate. In this study, we determine Mars rotation by combining the new Opportunity tracking data with historic tracking data from the Viking and Pathfinder landers and tracking data from Mars orbiters (Mars Global Surveyor, Mars Odyssey and Mars Reconnaissance Orbiter). The estimated rotation parameters are stable in cross-validation tests and compare well with previously published values. In particular, the Mars precession rate is estimated to be â7606.1 ± 3.5 mas/yr. A representation of Mars rotation as a series expansion based on the determined rotation parameters is provided.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Icarus - Volume 229, February 2014, Pages 340-347
Journal: Icarus - Volume 229, February 2014, Pages 340-347
نویسندگان
Petr Kuchynka, William M. Folkner, Alex S. Konopliv, Timothy J. Parker, Ryan S. Park, Sebastien Le Maistre, Veronique Dehant,