## Inverse square gravityEdit

The gravitational acceleration towards an object is given by:

where:

*m*is the mass of the object,*r*is the distance from center of mass of the object to the location we are considering,- is the unit vector from center of the object to the location we are considering,
*G*is the gravitational constant of the universe.

Body | Multiple of Earth gravity | m/s² | Satellite/Ring |
---|---|---|---|

Sun | 27.90
| 274.1
| |

Mercury | 0.3770 | 3.703 | no/no |

Venus | 0.9032 | 8.872 | no/no |

Earth | 1 (by definition)
| 9.8226^{[1]}
| |

Moon | 0.1655
| 1.625
| yes/no |

Mars | 0.3895
| 3.728
| yes/no |

Jupiter | 2.640
| 25.93
| yes/yes |

Saturn | 1.139
| 11.19
| yes/yes |

Uranus | 0.917
| 9.01
| yes/yes |

Neptune | 1.148
| 11.28
| yes/yes |

Pluto | 0.0621 | 0.610 | yes/no |

## Inverse biquadrate gravityEdit

Astronomic object | Gravitational acceleration(at surface) |

Earth | g
= 9.80665 m/s |

Moon | 0.1654 g |

Mars | 0.38 g |

Name | Rotation period (days) | Equatorial diameter ( biq,shortest distance)
| SurfaceGravitational acceleration
| ||||||||
---|---|---|---|---|---|---|---|---|---|---|---|

Sun | Sun | 25~35 | 109 | ||||||||

Terrestrials | Mercury | 58.64 | 0.271 | ||||||||

Venus | -243.02 | 0.605 | |||||||||

Moon | 27.3 | 2.626
| 0.1654 g | ||||||||

Earth
| 1.00 | 1.00 | g = 9.80665 m/s2 | ||||||||

Mars | 1.03 | 0.292 | 0.38 g | ||||||||

Gas giants | Jupiter | 0.41 | 4.508
| ||||||||

Saturn | 0.43 | 3.176
| 0.0591g | ||||||||

Uranus | -0.72 | 1.077 | |||||||||

Neptune | 0.67 | 0.896 | |||||||||

## See alsoEdit

## ReferencesEdit

- ↑ This value excludes the adjustment for centrifugal force due to Earth’s rotation and is therefore greater than the 9.80665 m/s² value of standard gravity.