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It may also refer to the time it takes a satellite orbiting a planet or moon to complete one orbit. For celestial objects in general, the orbital period is determined by a 360° revolution of one body around its primary, e.g. Earth around the Sun. Periods in astronomy are expressed in units of time, usually hours, days, or years.
2012 – Saturn's moon Methone is imaged up close by the Cassini spacecraft, revealing a remarkably smooth surface. [241] 2012 – Dawn spacecraft breaks orbit of Vesta and heads for Ceres. [240] 2013 – MESSENGER spacecraft provides the first ever complete map of the surface of Mercury. [242]
27.321661 days [7] (equal to sidereal orbital period due to spin-orbit locking, a sidereal lunar month) 27 d 7 h 43 m 11.5 s: 29.530588 days [7] (equal to synodic orbital period, due to spin-orbit locking, a synodic lunar month) none (due to spin-orbit locking) Mars: 1.02595675 days [3] 1 d 0 h 37 m 22.663 s: 1.02749125 [8] days: Ceres: 0.37809 ...
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Project Highwater was an experiment carried out as part of two of the test flights of NASA's Saturn I launch vehicle (using battleship upper stages), successfully launched into a sub-orbital trajectory from Cape Canaveral, Florida. The Highwater experiment sought to determine the effect of a large volume of water suddenly released into the ...
All planets orbit the Sun in elliptical orbits (image on the right) and not perfectly circular orbits. [71] The radius vector joining the planet and the Sun has an equal area in equal periods. [72] The square of the period of the planet (one revolution around the Sun) is proportional to the cube of the average distance from the Sun. [73]
A synchronous orbit is an orbit in which an orbiting body (usually a satellite) has a period equal to the average rotational period of the body being orbited (usually a planet), and in the same direction of rotation as that body.
“You’re my Saturn return / We orbit and burn / With one foot out of the grave,” read the lyrics in the second verse. Albums Turning 30 in 2024: Madonna, TLC and More Rêve (2023)