Neptune:
Mass .................... 3.307 x 1022lbm, 1.0278 x 1023 kg
Density ...................... 109.9 lb/cubic foot
Mean Radius .................. 15,388 miles
Max Distance from Sun ........ 2,881,000,000 miles
Min Distance from Sun ........ 2,771,000,000 miles
Gravity relative to Earth .... 1.12
Rotation period .............. 16 h, 6 min, 36 s
Revolution time around sun ... 164 years (60,189 d)
Orbital velocity ............. 3.38 miles/second
Number of Moons .............. 8, Triton, Nereid, Naiad, Thalassa, Despina, Galatea, Larissa, Proteus.