Space · Mean-diameter reference · idealized sphere
Venus diameter and size comparison
Venus has a reference mean diameter of 12,103.6 kilometers, close to Earth’s size. The pale cloud illustration identifies the planet; it does not add the height of an extended atmosphere to the measurement.
12103600 m
Sourced measurement- Measurement
- Mean diameter · twice JPL mean radius
- Subject or version
- Mean-diameter reference · idealized sphere
- In kilometers
- 12,103.6 km (1 km = 1,000 m)
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A little more perspective
JPL lists 6,051.8 kilometers for both its mean and equatorial radius fields. Doubling the mean radius gives the diameter used here, with twice the listed radius uncertainty.
The displayed diameter is 2 × 6,051.8 km = 12,103.6 km. Doubling the source radius uncertainty gives ±2 km for diameter. The source defines mean radius through an equivalent-volume sphere. Its review date is not a new measurement date.
Quick facts
Venus has a reference mean diameter of 12,103.6 kilometers, close to Earth’s size. The pale cloud illustration identifies the planet; it does not add the height of an extended atmosphere to the measurement.
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Sources and measurement notes
Source review recorded . Maintained by Ishan Karunaratne. Suggest a correction with a source and the exact measurement being compared.