Worlds apart

Triton vs Moon

What are they, and what does the difference actually look like?

Two things. One honest scale.

Meet the pair

What these two things are

Triton

Triton is a natural satellite of Neptune, with a retrograde orbit and a surface of frozen nitrogen.

2,705 kmMean diameter

Moon

The Moon is Earth’s natural satellite and the brightest large object in Earth’s night sky.

3,475 kmMean diameter

Moon has about 1.28 times the mean diameter of Triton.

True scale
01
Triton2,705 kmMean diameter
02
Moon3,475 kmMean diameter
Both marked spans share one linear scale. Artwork keeps its proportions; poses and surface detail are illustrative.
Measurements, assumptions & sources +

Triton

Rounded mean-radius model of Triton. The derived area and volume describe a sphere; surface terrain and flattening are omitted.

NASA JPL — Planetary satellite physical parameters

The marked mean diameter is calibrated. Unmeasured illustration details are representative.

Moon

Rounded mean-radius model of Moon. The derived area and volume describe a sphere; surface terrain and flattening are omitted.

NASA JPL — Planetary satellite physical parameters

The marked mean diameter is calibrated. Unmeasured illustration details are representative.

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Measurement details

Why these numbers?

The visual compares mean diameter with mean diameter. The records below preserve each value’s basis and caveats.

Triton

2,705 km

Mean diameter · approximate

Rounded mean-radius model of Triton. The derived area and volume describe a sphere; surface terrain and flattening are omitted.

Moon

3,475 km

Mean diameter · approximate

Rounded mean-radius model of Moon. The derived area and volume describe a sphere; surface terrain and flattening are omitted.

Comparing
Mean diameter ↔ Mean diameter
Relative size
Moon is larger on this measurement by a factor of about 1.28. Moon's selected measurement is approximately 28.4% greater than Triton's.

How to read the visual

The labelled spans and stored measurements determine the scale; unmeasured illustration details do not.

  • Triton is labelled approximate; treat the displayed value as a comparison anchor rather than false precision.
  • Moon is labelled approximate; treat the displayed value as a comparison anchor rather than false precision.

There’s always another scale

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