Facts about Neptune

Solar Distance 4.501 billion km
Revolution Period 164.79 Earth years
Rotation Period 16.11 hours
Equatorial diameter 49,528 km
Gravitational Pull 1.2 times that of the Earth
Natural Satellites 13      (Tell me more!)

The StarChild site is a service of the High Energy Astrophysics Science Archive Research Center (HEASARC), Dr. Alan Smale (Director), within the Astrophysics Science Division (ASD) at NASA/GSFC.

StarChild Authors: The StarChild Team
StarChild Graphics & Music: Acknowledgments
StarChild Project Leader: Dr. Laura A. Whitlock
Responsible NASA Official: Phil Newman

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