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As each day is divided into 24 hours, the first hour of a day is ruled by the planet three places down in the Chaldean order from the planet ruling the first hour of the preceding day; [2] i.e. a day with its first hour ruled by the Sun ("Sunday") is followed by a day with its first hour ruled by the Moon ("Monday"), followed by Mars ("Tuesday ...
A sidereal day is about 4 minutes less than a solar day of 24 hours ... Saturn: 10.7 Uranus: ... a civil day can be either 86,401 or 86,399 SI seconds long on such a day.
The other type of commonly used "rotation period" is the object's synodic rotation period (or solar day), which may differ, by a fraction of a rotation or more than one rotation, to accommodate the portion of the object's orbital period around a star or another body during one day.
Both Voyagers measured the rotation of Saturn (the length of a day) at 10 hours, 39 minutes, 24 seconds. [42] Voyager 1 ' s mission included a flyby of Titan, Saturn's largest moon, which had long been known to have an atmosphere.
Saturn doesn't have any easily visible landmarks to track, and its gassy atmosphere doesn't offer many hints as to how fast it's actually rotating. ... Decades ago, astronomers using magnetic ...
For instance, for completing an orbit every 24 hours around a mass of 100 kg, a small body has to orbit at a distance of 1.08 meters from the central body's center of mass. In the special case of perfectly circular orbits, the semimajor axis a is equal to the radius of the orbit, and the orbital velocity is constant and equal to
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An astronomical day refers to a length of day of exactly or nearly 24 hours beginning at noon instead of at midnight. The exact length has been variously defined as either that of a solar day or of a sidereal day. [1] [2] [3]