Uranus

Ice Giant
An ice giant tilted on its side. Largely ignored since the outer colonies were established — too far, too cold, too little return.
Visited Uranus again after what must be thirty years, and I'd forgotten how humbling it is to float above something so thoroughly indifferent to human ambition. That absurd axial tilt still catches me off guard — ninety-eight degrees of cosmic eccentricity, spinning like a top knocked sideways by some ancient collision. The outer colonies have rendered it a footnote, a blue-green marble too distant and inhospitable to justify the fuel expenditure, but there's something oddly comforting about surveying a world that asks nothing of us and receives nothing in return.
— Captain Vex Moreau, Explorer's Guild Field Journal
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Radius 20187.0 km
Mass 16.9 M⊕
Surface Gravity 0.99 g
Temperature 70 K (-203°C)
Atmosphere None — H2/He/CH4 (no surface)
Day Length 16.2 hours
Orbital Period 16.2 years
Orbital Distance 6.39 AU