Unverified50% confidenceFactExact time
SGP4（Simplified General Perturbations 4）算法由美国空军于1980年代定型发布，考虑J2至J4带谐项摄动、大气阻力和日月引力等扰动因素
1
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50%
Confidence
Long-term
Relevance
8/25/2026
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