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Cosmic Discovery Hub

Neptune

The most distant planet: a deep-blue ice giant with the fastest winds in the Solar System, up to about 2,000 km/h.

Mass1.0240e+26 kg
Radius24,622 km
Surface gravity11.15 m/s²
Escape velocity23.5 km/s
Day length (rotation)16.1 hours
Year length (orbit)59,800 Earth days
Distance from Sun30.07 AU
Mean temperature-200 °C
Moons16 confirmed

Source: NASA Planetary Fact Sheet. Values are means/approximations for education.

Try it: your weight on Neptune

On Mars (gravity 3.71 m/s²) you would weigh 259.7 N — a scale would read about 26.482 kg. Your mass (70 kg) never changes.