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With an equatorial diameter of 30,775 miles (49,528 kilometers), Neptune is about four times wider than Earth. If Earth were the size of a nickel, Neptune would be about as big as a baseball. From an average distance of 2.8 billion miles (4.5 billion kilometers), Neptune is 30 astronomical units away from the Sun.
- In Depth
One day on Neptune takes about 16 hours (the time it takes...
- NASA Science
Dark, cold and whipped by supersonic winds, giant Neptune is...
- In Depth
Neptune's equatorial radius of 24,764 km [11] is nearly four times that of Earth. Neptune, like Uranus, is an ice giant, a subclass of giant planet, because they are smaller and have higher concentrations of volatiles than Jupiter and Saturn. [73]
One day on Neptune takes about 16 hours (the time it takes for Neptune to rotate or spin once). And Neptune makes a complete orbit around the Sun (a year in Neptunian time) in about 165 Earth years (60,190 Earth days).
13 Οκτ 2024 · Neptune is almost four times the size of Earth but slightly smaller than Uranus, which makes it the smallest in diameter of the four giant, or Jovian, planets. It is more massive than Uranus, however, having a density roughly 25 percent higher.
Dark, cold and whipped by supersonic winds, giant Neptune is the eighth and most distant major planet orbiting our Sun. More than 30 times as far from the Sun as Earth, Neptune is not visible to the naked eye.
3 Οκτ 2024 · Dipole field strength: 0.142 Gauss-Rn 3 Dipole tilt to rotational axis: 46.9 degrees Longitude of tilt: 288 degrees (IAU convention) Dipole offset: 0.485 Rn Surface (1 Rn) field strength: ~0.1 - 0.9 Gauss. Rn denotes Neptunian model radius, here defined to be 24,765 km.
28 Μαρ 2019 · Orbiting at a distance of roughly 2.8 billion miles from the sun, Neptune is the furthest planet yet discovered in our solar system (that is, after Pluto's reclassification as a dwarf...
