Deal with them, then head inside to confront several Mercenaries, Mercenary Snipers, and a Crime Boss. The hideout at the top of this small mountain is guarded by three Alliance Heavy Turrets.
Yet another crashed space probe for you to bypass and plunder for its upgrades. Mavigon's ridiculously cold temperatures serve as a Level 2 Hazard (even though it only shows as a Level 1 in the planet's description) should you need to step foot out of the Mako. One of the two crimelords Helena Blake wants eliminated as part of the 'UNC: Hostile Takeover' assignment can be found here.
Mavigon is located in the Han system of the Gemini Sigma cluster.