Amalthea
Amalthea is an irregularly shaped moon of Jupiter with a reddish surface and prominent craters.
Also known as: Jupiter V, Amalthea moon
How big is it?
167 km · mean-equivalent diameter
Mean-equivalent diameter · approximate
Typical recorded range: 160 km to 175 km.
A little perspective
Amalthea vs One-hour drive at 100 km/h: length comparison
The mean-equivalent diameter of Amalthea is about 1.67 times the distance of a one-hour drive at 100 km/h.
Amalthea is an irregularly shaped moon of Jupiter with a reddish surface and prominent craters.
A one-hour drive at a set speed is the distance a vehicle travels in one hour of uninterrupted motion.
Both rulers start at the same zero and share one linear scale. Artwork keeps its original proportions. A ruler represents the selected distance or a measurement not visible in this view.
Measurements, assumptions & sources +
Amalthea
Mean-equivalent diameter: 167 km; approximate; range 160 km–175 km.
Jupiter moon Amalthea is highly irregular, approximately 250 x 146 x 128 km. A 167 km mean-equivalent diameter is used for scale comparison; the illustrated body is identity-specific but remains schematic.
NASA JPL — Planetary satellite physical parameters
The marked mean-equivalent diameter is calibrated. Unmeasured illustration details are representative.
One-hour drive at 100 km/h
Distance: 100 km; example.
A defined distance at a constant speed, excluding delays.
Defined examples — our methodology
The marked distance is calibrated. Unmeasured illustration details are representative.
Use the visual comparison to explore its scale, then check the measurements and sources.
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Why this measurement?
Why we use 167 km
We compare the mean-equivalent diameter of Amalthea. This is an estimate; check the notes for its rounding and uncertainty. The recorded range is 160 km to 175 km.
Jupiter moon Amalthea is highly irregular, approximately 250 x 146 x 128 km. A 167 km mean-equivalent diameter is used for scale comparison; the illustrated body is identity-specific but remains schematic.
The marked horizontal span follows the measured feature, not the edges of the image. How calibrated comparisons work →
Recorded properties
Dimensions and measurements
| Property | Selected value | Recorded range | Basis |
|---|---|---|---|
| 167 km | 160 km to 175 km | approximate | |
| 2.08 × 10¹⁵ t | 1.9 × 10¹⁵ t to 2.3 × 10¹⁵ t | approximate |
Around this scale
Explore nearby values.
Compare examples with lower, similar and higher values. Each card names the measurement being compared.
Nearest lower valuePlanets, moons and spaceThebe98.6 kmMean-equivalent diameterThebe is a small, irregular inner moon of Jupiter that orbits close to the planet within its ring system.
Around the same scalePlaces and natural featuresBali145 kmApproximate east-west spanBali is an Indonesian island renowned for its distinctive Hindu culture and vibrant arts scene.
Nearest higher valuePlanets, moons and spaceHimalia170 kmMean-equivalent diameterHimalia is an irregularly shaped outer moon of Jupiter, orbiting the planet at a great distance.Sources and method
Want to check the number?
The source records and measurement method remain available for inspection.
- NASA JPL — Planetary satellite physical parametersPublished mean radii and gravitational parameters GM. Spherical areas, volumes, masses and local gravity are explicitly derived.
There’s always another scale
Follow your curiosity.
SpaceHimalia170 kmHimalia is an irregularly shaped outer moon of Jupiter, orbiting the planet at a great distance.SpaceThebe98.6 kmThebe is a small, irregular inner moon of Jupiter that orbits close to the planet within its ring system.
SpaceJupiter139,800 kmJupiter is a giant planet composed mainly of hydrogen and helium, orbiting the Sun beyond the asteroid belt.
TransportOne-hour drive at 100 km/h100 kmA one-hour drive at a set speed is the distance a vehicle travels in one hour of uninterrupted motion.
SpaceMimas396.4 kmMimas is an icy moon of Saturn, visually dominated by the large Herschel impact crater.
Places10,000 km² region10,000 km²A region is a large expanse of land defined by geographical or administrative boundaries.
SpaceEnceladus504.2 kmEnceladus is a natural satellite of Saturn, with an icy surface and plumes of water vapour erupting from its south pole.TransportFive-hour drive at 100 km/h500 kmA five-hour drive at a set speed is the distance a vehicle covers in five hours of continuous travel without breaks.