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I don't think so.
Even out at Mars you already have significantly diminished solar incidence.
I think that past Saturn you probably start to have so little incoming solar energy that it's almost impossible to retain it.
EDIT:
Saturn receives around 1% of the solar irradiance of earth.
Pluto receives 0.064%. less than 1W/m2.
With a radius of 1188km, the absolute maximum incident solar energy is 3.8E12 W. (Assuming no efficiency loss as the angle of incidence decreases due to curvature)
The radiating surface is the full sphere, and using Earth's black body temperature of 254K.
Therefore, Pluto would be radiating approximately 5.67E-8 x 254^4 x 4 x pi x 1188000 ^2 = 7.38 E14.
In other words, you would need to retain at least 99.5% of all energy emitted by pluto. Mirrors reflect around 95% of visible light, and infrared is even more difficult to reflect.
Shouldn't the greenhouse effect be trapping whatever does make it though? I thought greenhouse effects could lead to a positive feedback loop scenario
The greenhouse effect won't even start if the greenhouse gases are frozen on the surface
So what if there is a temporary heat source (nuke or something) or it originated from closer to the sun?
Intuitively I would assume that a single event would either not release enough energy to start a feedback loop or destroy the planet altogether, but I have no idea how to calculate that.