Moon

Document v1 · published by Koskamo · updated 2026-10-04

Moon facts from the NASA Planetary Fact Sheet (metric).

Mass: 0.073 × 10²⁴ kg
Diameter: 3475 km
Density: 3340 kg/m³
Gravity: 1.6 m/s²
Escape Velocity: 2.4 km/s
Rotation Period: 655.7 hours
Length of Day: 708.7 hours
Distance from Sun: 0.384 × 10⁶ km (NASA footnote: For the Moon, the average distance from the Earth is given.)
Perihelion: 0.363 × 10⁶ km (NASA footnote: For the Moon, the closest and furthest points to Earth are given, known as the "Perigee" and "Apogee" respectively.)
Aphelion: 0.406 × 10⁶ km (NASA footnote: For the Moon, the closest and furthest points to Earth are given, known as the "Perigee" and "Apogee" respectively.)
Orbital Period: 27.3 days (NASA footnote: For the Moon, the sidereal orbit period, the time to orbit once relative to the fixed background stars, is given.)
Orbital Velocity: 1.0 km/s (NASA footnote: For the Moon, the average velocity around the Earth is given.)
Orbital Inclination: 5.1 degrees
Orbital Eccentricity: 0.055
Obliquity to Orbit: 6.7 degrees
Mean Temperature: -20 C
Surface Pressure: 0 bars
Number of Moons: 0
Ring System?: No
Global Magnetic Field?: No
Detailed NASA fact sheet: https://nssdc.gsfc.nasa.gov/planetary/factsheet/moonfact.html
Values compared to Earth: https://nssdc.gsfc.nasa.gov/planetary/factsheet/planet_table_ratio.html
Notes on the values: https://nssdc.gsfc.nasa.gov/planetary/factsheet/planetfact_notes.html
Fact sheet last updated: 18 March 2025

Source and provenance

Original source: nssdc.gsfc.nasa.gov
Published on Koskamo by: Koskamo
Citation version: Document v1
Reuse: NASA Planetary Fact Sheet (NSSDCA), a work of the US government (public domain in the United States)

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Moon facts from the NASA Planetary Fact Sheet (metric).

- Mass: 0.073 × 10²⁴ kg
- Diameter: 3475 km
- Density: 3340 kg/m³
- Gravity: 1.6 m/s²
- Escape Velocity: 2.4 km/s
- Rotation Period: 655.7 hours
- Length of Day: 708.7 hours
- Distance from Sun: 0.384 × 10⁶ km (NASA footnote: For the Moon, the average distance from the Earth is given.)
- Perihelion: 0.363 × 10⁶ km (NASA footnote: For the Moon, the closest and furthest points to Earth are given, known as the "Perigee" and "Apogee" respectively.)
- Aphelion: 0.406 × 10⁶ km (NASA footnote: For the Moon, the closest and furthest points to Earth are given, known as the "Perigee" and "Apogee" respectively.)
- Orbital Period: 27.3 days (NASA footnote: For the Moon, the sidereal orbit period, the time to orbit once relative to the fixed background stars, is given.)
- Orbital Velocity: 1.0 km/s (NASA footnote: For the Moon, the average velocity around the Earth is given.)
- Orbital Inclination: 5.1 degrees
- Orbital Eccentricity: 0.055
- Obliquity to Orbit: 6.7 degrees
- Mean Temperature: -20 C
- Surface Pressure: 0 bars
- Number of Moons: 0
- Ring System?: No
- Global Magnetic Field?: No
- Detailed NASA fact sheet: https://nssdc.gsfc.nasa.gov/planetary/factsheet/moonfact.html
- Values compared to Earth: https://nssdc.gsfc.nasa.gov/planetary/factsheet/planet_table_ratio.html
- Notes on the values: https://nssdc.gsfc.nasa.gov/planetary/factsheet/planetfact_notes.html
- Fact sheet last updated: 18 March 2025

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Published by Koskamo2026-10-04
Version 1