Nongravitational forces induced by sublimation of volatiles affect the rotational and orbital dynamics of comets. In addition to contributing to the improvement of ephemerides and of rotational models, nongravitational effects can help constrain the regional distribution and temporal evolution of cometary activity, which in turn provides input for the development of thermophysical and dust transport models. We review the progress that has been made in this field thanks to the Rosetta mission and we highlight the open questions.

中文翻译：

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彗星活动的非引力效应

由挥发物升华引起的非引力影响彗星的旋转和轨道动力学。除了有助于改进星历表和旋转模型外，非引力效应还有助于限制彗星活动的区域分布和时间演化，进而为热物理和尘埃传输模型的发展提供输入。由于 Rosetta 任务，我们回顾了该领域取得的进展，并强调了未解决的问题。