[Yosemitest]

Thermal Effects from Comet 2013 A1 (Siding Spring) on Mars’ Upper Atmosphere

[Errant]

I wonder if a coma impact could cause a disturbance in the orbit of its moons?

Name and pronunciation			Image	Diameter (km)	Mass (kg)	Semi-major axis (km)	Orbital period (h)	Average moonrise period (h, d)
Mars I	Phobos	/ˈfoʊbəs/ FOE-bəs		22.2 km (13.8 mi) (27×21.6×18.8) km	10.8×1015	9,377 km (5,827 mi)	7.66	11.12 h (0.463 d)
Mars II	Deimos	/ˈdaɪməs/ DYE-məs		12.6 km (7.8 mi) (10×12×16) km	2×1015	23,460 km (14,580 mi)	30.35	131 h (5.44 d)
The relative sizes of and distance between Mars, Phobos, and Deimos, to scale. (Load the image in full size to see both Moons of Mars.)