Having run the planet through an exoplanet calculator (Arecibo University), I found that if Jupiter was located where Mercury is, it would have an atmosphere functioning at:
Sol b
Orbital Period: 87.96778
Semimajor Axis: 0.387098 AU
Atmospheric Pressure: 70Kpa
Atmospheric Temperature: 310K (36.85 degrees Celsius)
Initial planetary State: Jupiter-like
Hydrogen (89%)
Helium (10%)
Methane (0.3%)
Ammonia (0.026%)
Water (0.0004%)
Final planetary state: Mercury-like
The problem is Atmospheric Fluid states. Water alone appears to be at or very close to Equilibrium at 70Kpa/310K. Does that mean its ice facing the Sun, and Steam on the Night side? Are we faced with the prospect of the hydrogen and helium boiling off into space, or do the volatile gases explode one day liberating the planetary atmosphere?
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