In astronomy, the rotation period or spin period of a celestial object (e.g., star, gas giant, planet, moon, asteroid) has two definitions. The first one...

Earth's rotation or Earth's spin is the rotation of planet Earth around its own axis, as well as changes in the orientation of the rotation axis in space...

if the day is defined as a sidereal day (also known as the sidereal rotation period). This is similar to how the time kept by a sundial (Solar time) can...

A synodic day (or synodic rotation period or solar day) is the period for a celestial object to rotate once in relation to the star it is orbiting, and...

change in its rotation rate over the course of a complete orbit. In the case where a tidally locked body possesses synchronous rotation, the object takes...

rotational frequency is the rotation period or period of rotation, T=ν−1=n−1, with dimension of time (SI unit seconds). Rotational velocity is the vector quantity...

Rotation or rotational motion is the circular movement of an object around a central line, known as axis of rotation. A plane figure can rotate in either...

latitude increases. The solar rotation period is 24.47 days at the equator and almost 38 days at the poles. The average rotation is 28 days.[citation needed]...

an orbit around another Rotation period, the time needed for one object to complete a revolution Wavelength, the spatial period of a periodic wave Sentence...

rotation period of Saturn had increased appreciably, to approximately 10h 45m 45s ± 36s. An estimate of Saturn's rotation (as an indicated rotation rate...

for example, even the rotation period of Neptune remained uncertain. Cruikshank, D.P. (1 March 1978). "On the rotation period of Neptune". Astrophysical...

rotation period measured with Magellan spacecraft data over a 500-day period is smaller than the rotation period measured during the 16-year period between...

of 82.23° with a retrograde rotation period of 17 hours and 14 minutes. This means that in an 84-Earth-year orbital period around the Sun, its poles get...

A day is the time period of a full rotation of the Earth with respect to the Sun. On average, this is 24 hours (86,400 seconds). As a day passes at a...

Mercury's rotational period was 88 days, the same as its orbital period due to tidal locking. This phenomenon is known as synchronous rotation. The effort...

Observatory in southwest Germany. The F-type asteroid (FX) has a short rotation period of 4.02 hours and measures approximately 40 kilometers (25 miles) in...

orbit derivation Rotation period – time that it takes to complete one revolution around its axis of rotation Satellite revisit period Sidereal time Sidereal...

appeared oblate, and estimate its rotation period. In 1692, Cassini noticed that the atmosphere undergoes a differential rotation. The Great Red Spot may have...

Crop rotation is the practice of growing a series of different types of crops in the same area across a sequence of growing seasons. This practice reduces...

Don Backer led a group that discovered PSR B1937+21, a pulsar with a rotation period of just 1.6 milliseconds (38,500 rpm). Observations soon revealed that...

Rotational energy or angular kinetic energy is kinetic energy due to the rotation of an object and is part of its total kinetic energy. Looking at rotational...

and is named for the Etruscan counterpart to the god Pluto. Pluto's rotation period, its day, is equal to 6.387 Earth days. Like Uranus and 2 Pallas, Pluto...

United States. The very reddish object has an elongated shape and a rotation period of 9.98 hours. It was named after the centaur Pholus from Greek mythology...

its surface, which hints at a brief period of cryovolcanic activity in the distant past. With a rotation period of around 22 hours, Gonggong rotates...

unusually slow and possibly chaotic rotation period, similar to that of asteroid 4179 Toutatis. In July 1999, a rotational lightcurve of 1999 JM8 was obtained...

In 1991, a rotation period of Nereid of about 13.6 hours was determined by an analysis of its light curve. In 2003, another rotation period of about 11...

; Fernald, I.C.; Guan, B.Y.; et al. (6 March 2024). "ATel #16508: Rotation period of comet 12P/Pons-Brooks from CN coma morphology". The Astronomer's...

mean solar day. Earth's rotation period relative to the fixed stars, called its stellar day by the International Earth Rotation and Reference Systems Service...

geometrical albedo of 0.82±0.02. The rotation period of Makemake is estimated at 22.83 hours. A rotation period of 7.77 hours published in 2009 later...

area: 4πr2 Surface gravity: GM/r2 Escape velocity: √2GM/r Rotation velocity: rotation period/circumference The value given for Ceres is the mean moment...