Jupiter size and scale context

Jupiter is the largest planet in the Solar System. It is more massive than all the other planets combined and still spins once in only about 10 hours, giving the giant world the shortest day in the planetary family. Read its scale context, comparisons, and journey links on the canonical object page.

NGC 4395 Black HoleIntermediate-mass black hole·59,000 km

SaturnGas giant planet·116,460 km

JupiterGas giant planet·140,000 km

Luhman 16 BT-type brown dwarf star·~152,000 km

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Planets

Saturn

Saturn is a gas giant best known for its bright ring system, but the planet itself is also the least dense world in the Solar System. Its average density is lower than water, and its layered atmosphere is driven by powerful winds and storms beneath the rings that dominate its silhouette.

Scale fact116,460 kmdiameter

Object class: Gas giant planet
Mass: ~95 Earth masses
Host: Sun
Estimated age: ~4.5 billion years
Composition: Hydrogen and helium
Temperature: ~134 K cloud tops

Planets

Jupiter

Scale fact140,000 kmdiameter

Object class: Gas giant planet
Mass: ~318 Earth masses
Host: Sun
Estimated age: ~4.5 billion years
Composition: Hydrogen and helium
Temperature: ~110 K cloud tops

Stars

Luhman 16 B

Luhman 16 B is the cooler T-type member of the nearest known brown-dwarf binary system. It is massive enough to glow from its own heat but too light to sustain ordinary hydrogen fusion, with patchy clouds that make its brightness change as it rotates.

Scale fact~152,000 kmdiameter

Object class: T-type brown dwarf star
Composition: Hydrogen, helium, and molecular clouds
Mass: ~29 Jupiter masses
Host: Luhman 16 binary system