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The orbital period (also revolution ... Periods in astronomy are expressed in units of time, usually hours, days, or years. ... Neptune: 164.8 59,800 [9] 1.006 367.5
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.
K2-33b is a super-Neptune, ... K2-33b orbits its host star with an orbital period of 5.424 days at a distance of 0 ... (around the time that humans evolved on ...
The red ray rotates at a constant angular velocity and with the same orbital time period as the planet, = ... Period (days) (10-6 AU 3 /day 2) ... Neptune 30.0690 ...
Rotation period with respect to distant stars, the sidereal rotation period (compared to Earth's mean Solar days) Synodic rotation period (mean Solar day) Apparent rotational period viewed from Earth Sun [i] 25.379995 days (Carrington rotation) 35 days (high latitude) 25 d 9 h 7 m 11.6 s 35 d ~28 days (equatorial) [2] Mercury: 58.6462 days [3 ...
These Trojans have a semi-major axis and an orbital period very similar to Neptune's (30.10 AU; 164.8 years). Otrera belongs to the L 4 group, which leads 60 ° ahead Neptune's orbit. It orbits the Sun with a semi-major axis of 30.027 AU at a distance of 29.3–30.7 AU once every 164 years and 6 months (60,099 days).
Venus rotates retrograde with a sidereal day lasting about 243.0 Earth days, or about 1.08 times its orbital period of 224.7 Earth days; hence by the retrograde formula its solar day is about 116.8 Earth days, and it has about 1.9 solar days per orbital period.
At the time of his first observation in December 1612, it was stationary in the sky because it had just turned retrograde that very day; because it was only beginning its yearly retrograde cycle, Neptune's motion was thought to be too slight, and its apparent size too small, to clearly appear to be a planet in Galileo's small telescope. [10]