# Can CMEs disturb a planet orbit?

Yesterday (March 6), a massive X-class solar flare erupted from the Sun.

I was wondering if this kind of solar flares can affect in some way the orbit of a planet if aimed directly. Let's say, for example, Mercury.

Can this happen at all?

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Define "disturb a orbit" down to a small enough perturbation and damn near anything can do it. Why not just guesstimate the mass of the gas and treat it like a point body for the purposes of a BoTE calculation? – dmckee Mar 7 '12 at 20:20
I'm too lazy now to do the math, but this article should help. en.wikipedia.org/wiki/Coronal_mass_ejection#Physical_properties – PearsonArtPhoto Mar 8 '12 at 12:44

$$100 \cdot 7×10^{-10} \cdot 1.6×10^{12}kg = 112511 kg$$