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The long orbital period of Neptune means that the seasons last for forty Earth years. [109] Its sidereal rotation period (day) is roughly 16.11 hours. [12] Because its axial tilt is comparable to Earth's, the variation in the length of its day over the course of its long year is not any more extreme.
Neptune is 17 times the mass of Earth and is slightly more massive than its near-twin Uranus, which is 15 times the mass of Earth and slightly larger than Neptune. [a] Neptune orbits the Sun once every 164.8 years at an average distance of 30.1 astronomical units (4.50 × 10 9 km).
Hippocamp completes one revolution around Neptune every 22 hours and 48 minutes (0.95 days), corresponding to a semi-major axis, or orbital distance of 105,283 km (65,420 mi). [5] For comparison, this distance is approximately 4.3 Neptune radii, or just over a quarter of the Earth – Moon distance.
Neptune's moon Triton falls through the planet's Roche limit, potentially disintegrating into a planetary ring system similar to Saturn's. [109] 4.5 billion Mars reaches the same solar flux as that of the Earth when it first formed 4.5 billion years ago from today. [94] < 5 billion
The square of a planet's orbital period is proportional to the cube of the length of the ... (10-6 AU 3 /day 2 ) Mercury 0.38710 87.9693 7.496 ... Neptune 30.0690 ...
The massive object flew through the solar system at a velocity of about 6km per second, coming within 20 astronomical units of the sun and shaping the orbits of the gas giant planets into what we ...
35 days (high latitude) 25 d 9 h 7 m 11.6 s 35 d ~28 days (equatorial) [2] Mercury: 58.6462 days [3] 58 d 15 h 30 m 30 s: 176 days [4] Venus: −243.0226 days [ii] [5] −243 d 0 h 33 m: −116.75 days [6] Earth: 0.99726968 days [3] [iii] 0 d 23 h 56 m 4.0910 s: 1.00 days (24 h 00 m 00 s) Moon: 27.321661 days [7] (equal to sidereal orbital ...
A new roof covers the former Neptune Motor Lodge on New York Avenue in Neptune Monday, February 7, 2023. The structure has sat abandoned since March 2021, when a powerful storm tore off parts of ...