200 kilometres
200 kmLength · definition
The quantity is exact as entered. Comparisons use the clearly stated specimen, model or nominal measurement.
Length & distance
Just how long is 200 kilometres?
Our planet
200 km
200 kilometres
The quantity is exact as entered.
200 kmLength
0 - shared origin
Mimas
Mimas is an icy moon of Saturn, visually dominated by the large Herschel impact crater.
396.4 kmMean diameter
0 - shared origin
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.
A little perspective
The mean diameter of mimas is about 1.98 times 200 kilometres.
Measurements, assumptions & sources +
200 kilometres
Length: 200 km; definition.
The quantity is exact as entered. Comparisons use the clearly stated specimen, model or nominal measurement.
Mimas
Mean diameter: 396.4 km; approximate; range 395 km–398 km.
Saturn’s moon Mimas is about 396 km across and dominated visually by Herschel crater. The diameter is a mean for an imperfect sphere.
NASA JPL — Planetary satellite physical parameters
The marked mean diameter is calibrated. Unmeasured illustration details are representative.
Measurement details
Why these numbers?
Compare 200 kilometres with the mean diameter of mimas. The notes below explain how each value was chosen.
Mimas
396.4 kmMean diameter · approximate · range 395 km–398 km
Saturn’s moon Mimas is about 396 km across and dominated visually by Herschel crater. The diameter is a mean for an imperfect sphere.
- Comparing
- Length ↔ Mean diameter
- Relative size
- The mean diameter of mimas is about 1.98 times 200 kilometres. The mean diameter of mimas is approximately 98.2% greater than 200 kilometres.
How to read the visual
The diagram uses the recorded measurements. Details outside the marked spans do not set the scale.
- We use 396.4 km for the mean diameter of mimas; the recorded range is 395 km–398 km.
- The mean diameter of mimas: This is an estimate; check the notes for its rounding and uncertainty.
This comparison follows the selected length only; other dimensions may differ.
200,000 mmetres
656,170 ftfeet
124.27 mimiles
1.3369 × 10⁻⁶ AUastronomical units
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