Where does this data come from?

Values are rounded from NASA planetary fact sheets — equatorial diameter, mass relative to Earth, mean surface gravity, mean orbital distance in AU, orbital period in Earth years, sidereal rotation period and known moon counts.

Why is Pluto included if it is not a planet?

Pluto is included as a dwarf planet for reference, clearly labelled, because it is still commonly looked up alongside the eight planets.

Is anything uploaded?

No — this is a static reference table that runs entirely in your browser.

Planetary Data Reference

Diameter, mass, gravity, orbit and moons for every planet.

Planetary data at a glance

A compact reference for the eight planets plus Pluto: equatorial diameter, mass relative to Earth, surface gravity, mean distance from the Sun in astronomical units, orbital period, length of day (rotation), and number of moons.

Values are rounded from NASA planetary fact sheets. One astronomical unit (AU) is the mean Earth–Sun distance, about 149.6 million km. Everything runs in your browser.