UPSA Object Registry
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Pluto

Dwarf planet JPL Horizons
Mean radius
1,188.3 km
Mass
1.307 1e22 kg
Surface gravity
0.611 m/s^2
Rotation period
153.29 h
Orbital period
249.59 yr

Also known as

2 identifiers

Horizons 999134340

Recorded parameters

14 quantities with a single published value
ParameterValueUnitUncertainty As publishedSourceReference
Mass 1.307 1e22 kg Mass x10^22 (kg) JPL Horizons JPL Horizons on-line ephemeris system
Mean radius 1,188.3 km Vol. mean radius (km) JPL Horizons JPL Horizons on-line ephemeris system
Orbital period 249.5893 yr Sidereal orbit period JPL Horizons JPL Horizons on-line ephemeris system
Rotation period 153.2934 h Sidereal rot. period JPL Horizons JPL Horizons on-line ephemeris system
Escape velocity 1.21 km/s Escape speed, km/s JPL Horizons JPL Horizons on-line ephemeris system
GM 869.326 GM (planet) km^3/s^2 JPL Horizons JPL Horizons on-line ephemeris system
Mean orbital speed 4.67 km/s Mean orbit velocity JPL Horizons JPL Horizons on-line ephemeris system
Mean solar day 153.282 h Mean solar day, h JPL Horizons JPL Horizons on-line ephemeris system
Surface gravity 0.611 m/s^2 Surface gravity JPL Horizons JPL Horizons on-line ephemeris system
Km 1.86 g/cm^3 km) JPL Horizons JPL Horizons on-line ephemeris system
Mass ratio mc mp 0.122 mc/mp Mass ratio (Mc/Mp) JPL Horizons JPL Horizons on-line ephemeris system
Mc 2,015 Mc JPL Horizons JPL Horizons on-line ephemeris system
Sid rot rat rad s 1.13856e-05 rad/s Sid. rot. rat, rad/s JPL Horizons JPL Horizons on-line ephemeris system
Volume 10 10 km 3 0.697 Volume, 10^10 km^3 JPL Horizons JPL Horizons on-line ephemeris system

Provenance

where this card came from
ArchiveRead at (UTC)Record
JPL Horizons 2026-08-14 17:11 open at source

Machine-readable: /api/v1/object/pluto · Registry entry updated 2026-08-14.