Jupiter just got “smaller”: NASA’s Juno updates the planet’s official size and shape
NASA’s Juno spacecraft measured Jupiter’s equatorial diameter at 88,841 miles, about 5 miles less than previous estimates. The pole-to-pole diameter is now 83,067 miles, roughly 15 miles shorter than earlier figures. Scientists used radio occultation during 13 Juno flybys to obtain the new data, published this week in Nature Astronomy.