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See searches and references containing TIDAL LOCKING!TIDAL LOCKING
Situation in which an astronomical object's orbital period matches its rotational period
Tidal locking between a pair of co-orbiting astronomical bodies occurs when one of the objects reaches a state where there is no longer any net change
Tidal_locking
Gravitational effect also known as the differential force and the perturbing force
forces, but are not caused by the rotation. Further tidal phenomena include solid-earth tides, tidal locking, breaking apart of celestial bodies and formation
Tidal_force
Terrestrial planet orbiting the star Proxima Centauri
number of considerations: Both the activity of Proxima Centauri and tidal locking would hinder the establishment of these conditions on the planet. Unlike
Proxima_Centauri_b
Natural phenomenon due to which tidal locking occurs
the primary's rotation, known as tidal braking. See supersynchronous orbit. The process eventually leads to tidal locking, usually of the smaller body first
Tidal_acceleration
Possible factors for life around red dwarf stars
dwarf systems are unlikely to be habitable, due to high probability of tidal locking, likely lack of atmospheres, and the high stellar variation many such
Habitability of red dwarf systems
Habitability_of_red_dwarf_systems
Phenomenon in maths
instruments, orbital resonance and tidal locking of orbiting moons, mode-locking in fiber optics and phase-locked loops and other electronic oscillators
Arnold_tongue
Measure of the potential of natural satellites to have environments hospitable to life
dwarfs are likely to be tidally locked to their primary: that is, their days are as long as their orbits. While tidal locking may adversely affect planets
Habitability of natural satellites
Habitability_of_natural_satellites
Trans-Neptunian object
measures approximately 403±40 km. Varda and Ilmarë are likely mutually tidally locked. The binary system exhibits a very large mass ratio, comparable to that
174567_Varda
Astronomical body that orbits a planet
small orbital inclination and eccentricity) in the Solar System are tidally locked to their respective primaries, meaning that the same side of the natural
Natural_satellite
Natural satellite orbiting Earth
resulting tidal forces are the main driver of Earth's tides, and have pulled the Moon to always face Earth with the same near side. This tidal locking effectively
Moon
Curved path of an object around a point
general, the whole orbit, with the exception of the semimajor axis. Tidal locking between a pair of co-orbiting astronomical bodies occurs when one of
Orbit
Exoplanet partially in the habitable zone
conditions that combat tidal locking. On the other hand, the planet's eccentricity could be a factor working against tidal locking in and of itself; the
TOI-2257_b
Possible dwarf planet
861+0.076 −0.074×1020 kg. The primary body and its moon form a fully tidally locked system with a synchronous rotation period of 5.49 days, similar to the
120347_Salacia
Orbital and friction heating on a planet or moon oceans, or interior
orbit (tidal circularization) and the rotational periods of the two bodies adjust towards matching the orbital period (tidal locking). Sustained tidal heating
Tidal_heating
Disproven super-Earth orbiting Gliese 581
been dubbed "Eyeball Earth" by the author. Modeling of the effect of tidal locking on Gliese 581g's possible atmosphere, using a general circulation model
Gliese_581g
Largest natural satellite of Pluto
candidate system Salacia–Actaea are the only known examples of mutual tidal locking in the Solar System, though it is likely that Orcus–Vanth is another
Charon_(moon)
Innermost Galilean moon of Jupiter
object in the Solar System. This extreme geologic activity results from tidal heating from friction generated within Io's interior as it is pulled between
Io_(moon)
Hemisphere of the Moon that always faces away from Earth
away from Earth; the opposite hemisphere being the near side. Due to tidal locking, the time it takes for the Moon to orbit the Earth once is equal to
Far_side_of_the_Moon
Goldilocks Earth sized exoplanet orbiting Kepler 296
gravitysimulator.org. Retrieved 27 November 2023. Barnes, Rory (1 December 2017). "Tidal locking of habitable exoplanets". Celestial Mechanics and Dynamical Astronomy
Kepler-296e
Potentially habitable exoplanet
com. Retrieved November 21, 2023. Barnes, Rory (December 1, 2017). "Tidal locking of habitable exoplanets". Celestial Mechanics and Dynamical Astronomy
K2-332_b
Hypothetical type of tidally locked planet
An eyeball planet is a hypothetical type of tidally locked planet, for which tidal locking induces spatial features (for example in the geography or composition
Eyeball_planet
Orbits where planets may have liquid surface water
extremely close distances to the stars cause tidal locking, an important factor in habitability. For a tidally locked planet, the sidereal day is as long as
Habitable_zone
Super-Earth exoplanet orbiting Gliese 581
resulting from this tidal locking may play a major role in the planet's geology. Models proposed by scientists predict that tidal heating could yield
Gliese_581c
Likelihood of finding extraterrestrial life in yellow dwarf systems
their star, including probable tidal locking. Even in a small yellow dwarf like Tau Ceti, of type G8.5V, the locking limit is at 0.4237 AU versus the
Habitability of G-type main-sequence star systems
Habitability_of_G-type_main-sequence_star_systems
Third planet from the Sun
causes lunar tides on Earth. The same effect on the Moon has led to its tidal locking: its rotation period is the same as the time it takes to orbit Earth
Earth
Smallest Galilean moon of Jupiter
meridian is a line passing through this point. Research suggests that tidal locking may not be full, as a non-synchronous rotation has been proposed: Europa
Europa_(moon)
Pattern observed on the Moon's surface
with these maria that make up the man is always facing Earth due to a tidal locking, or synchronous orbit. Thought to have occurred because of the gravitational
Man_in_the_Moon
Change in sea level due to gravity
global atmospheric flow Tidal barrage – Dam-like structure Tidal island – Island accessible by foot at low tide Tidal locking – Situation in which an
Tide
First planet from the Sun
stationary in Mercury's sky. The 3:2 resonant tidal locking is stabilized by the variance of the tidal force along Mercury's eccentric orbit, acting on
Mercury_(planet)
Second planet from the Sun
retrograde rotation about its axis, a result of competing forces of solar tidal locking and differential heating of Venus's massive atmosphere. As a result
Venus
Known extent to which a planet is suitable for life
surface of planets orbiting them at a distance that does not induce tidal locking. K-type stars may be able to support life far longer than the Sun. Whether
Planetary_habitability
Depictions of the planet
scant attention. Later, when it was incorrectly believed that it was tidally locked with the Sun creating a permanent dayside and nightside, stories mainly
Mercury_in_fiction
Hemisphere of the Moon facing the Earth
axis at the same rate that the Moon orbits Earth—a phenomenon known as tidal locking. The opposite hemisphere is the far side. The Moon is directly illuminated
Near_side_of_the_Moon
Period of darkness
Physics Publishing. ISBN 0-7503-0874-5. Gunn, Alastair (n.d.). "What is tidal locking?". Science Focus. BBC. Retrieved 27 April 2024. Guzewich, Scott D.;
Night
Large, round non-stellar astronomical object
equilibrium between tidal forces slowing it down and atmospheric tides created by solar heating speeding it up. All the large moons are tidally locked to their parent
Planet
Moon beyond the Solar System
close to their stars on circular orbits will tend to despin and become tidally locked. As the planet's rotation slows down the radius of a synchronous orbit
Exomoon
Natural satellites orbiting Pluto
Charon, Styx, Nix, Kerberos, and Hydra. Charon, the largest, is mutually tidally locked with Pluto, and is massive enough that Pluto and Charon are sometimes
Moons_of_Pluto
Red dwarf star in the constellation Aquarius
planets may have reached an equilibrium with slow planetary rotations and tidal locking, which can lead to the synchronisation of a planet's rotation to its
TRAPPIST-1
Water-covered planet with a hydrogen-rich atmosphere
, M dwarfs. For hotter stars the Dark Hycean IHB may be beyond the tidal-locking separation. Dark hycean worlds can form when the atmosphere does not
Hycean_planet
Effect of tidal forces on an orbiting body
become tidally locked, in which at least one object has the same side facing the other object during the course of an orbit. Tidal locking Tidal acceleration
Tidal_circularization
Nearest star to the Solar System
period of 3.6–14 days. A planet orbiting within this zone may experience tidal locking to the star. If the orbital eccentricity of this hypothetical planet
Proxima_Centauri
Rotation period of a body relative to the primary object it orbits, e.g. solar day
over a location on Earth's surface at the same mean solar time. Due to tidal locking with Earth, the Moon's synodic day (the lunar day or synodic rotation
Synodic_day
to spatial variations in gravitational potential. tidal locking The net result of continued tidal braking such that, over the course of an orbit, there
Glossary_of_astronomy
Relative directions of orbit or rotation
which is retrograde to the Sun. Nearly all regular satellites are tidally locked and thus have prograde rotation. Retrograde satellites are generally
Retrograde and prograde motion
Retrograde_and_prograde_motion
Irregular and unpredictable rotation of an astronomical body
Tidal forces, like the ones that affect ocean waves on Earth, can cause these chaotic motions to stabilize or lead to tidal locking. Tidal locking happens
Chaotic_rotation
Kinetic energy of rotating body with moment of inertia and angular velocity
motion, increasing its distance from Earth and its orbital period (see tidal locking for a more detailed explanation of this process). Flywheel List of energy
Rotational_energy
Moon of Jupiter
and inclination (~ 0.06°) relative to the equator of Jupiter. Due to tidal locking, Metis rotates synchronously with its orbital period (about 7 hours)
Metis_(moon)
Apparent oscillation of a minor body seen from the major body it orbits
The Moon keeps one of its hemispheres facing the Earth because of tidal locking. Therefore, the first view of the far side of the Moon was not possible
Libration
Time for Moon to complete one rotation on its axis
lunar day is therefore the time of a full lunar day-night cycle. Due to tidal locking, this equals the time that the Moon takes to complete one synodic orbit
Lunar_day
Orbit of an astronomical body equal to that body's average rotational period
orbit Semisynchronous orbit Supersynchronous orbit Graveyard orbit Tidal locking (synchronous rotation) Sun-synchronous orbit List of orbits Holli, Riebeek
Synchronous_orbit
Daily falling of the Sun below the horizon
atmosphere, making the change from light to dark less noticeable. Due to the tidal locking of the Moon to the Earth, it lasts longer, though not completely dark
Sunset
Moon of Jupiter
Jupiter's equator of 0.03°, respectively. It is assumed that due to tidal locking, Adrastea rotates synchronously with its orbital period, keeping one
Adrastea_(moon)
Planets visible to the naked eye
cloud Oort limit Related Double planet Lagrange point Moonlet Syzygy Tidal locking Outline of the Solar System Solar System portal Astronomy portal Earth
Classical_planet
Gas giant planet orbiting close to a star
exotic atmospheres due to their short periods, relatively long days, and tidal locking. Atmospheric dynamics models predict strong vertical stratification
Hot_Jupiter
Effect on frequency of interacting oscillators
injection locking. When the second oscillator merely disturbs the first but does not capture it, the effect is called injection pulling. Injection locking and
Injection_locking
Planetary system consisting of the Sun and objects orbiting it
the gravitational effects of a passing star, or the galactic tide, the tidal force exerted by the Milky Way. No direct observation of the Oort cloud
Solar_System
Largest dwarf planet in the Solar System
their center of mass) does not lie within either body, and they are tidally locked. New Horizons was the first spacecraft to visit Pluto and its moons
Pluto
Multiple proofs regarding Earth's approximately spherical shape
lunar eclipse is only visible from half of Earth at a time. The Moon's tidal lock to Earth results in the Moon's always showing only one side to Earth (see
Empirical evidence for the spherical shape of Earth
Empirical_evidence_for_the_spherical_shape_of_Earth
Time between successive new moons
position of the Moon with respect to the Sun as seen from Earth. Due to tidal locking, the same hemisphere of the Moon always faces the Earth and thus the
Lunar_month
Planet that orbits a black hole
Blanets sufficiently close to their host black hole may also be tidally locked or even tidally deformed. The unconfirmed extragalactic planet M51-ULS-1 b.
Blanet
Astrophysical models for the formation of galaxies and clusters of galaxies Tidal locking – Situation in which an astronomical object's orbital period matches
Formation and evolution of the Solar System
Formation_and_evolution_of_the_Solar_System
The Moon's circuit around Earth
time, Earth and the Moon would be in a mutual spin–orbit resonance or tidal locking, in which the Moon will orbit Earth in about 47 days (currently 27 days)
Orbit_of_the_Moon
Light that reaches Earth from the Moon
eclipses on the Moon Eclipse cycle Supermoon Tide Tidal force Tidal locking Tidal acceleration Tidal range Kordylewski clouds Lunar station Surface and
Moonlight
Hypothesis that complex extraterrestrial life is improbable and extremely rare
proponents argue life cannot arise outside Sun-like systems, due to tidal locking and ionizing radiation outside the F7–K1 range. However, some exobiologists
Rare_Earth_hypothesis
Spiritual and philosophical book
slower until one hemisphere is left always turned to the sun due to tidal locking, citing Mercury as an example. Scientists at the time of the book's
The_Urantia_Book
Super-Earth orbiting Kepler-442
tidal forces from its host star would be enough to fully tidally lock it. As of July 2018, Kepler-442b was considered the most habitable non-tidally-locked
Kepler-442b
Scientific projections regarding the far future
Gregory A.; Smith, David E.; Zuber, Maria T. (2005). "Improved estimate of tidal dissipation within Mars from MOLA observations of the shadow of Phobos"
Timeline_of_the_far_future
sufficiently-low solar-flare activity and a habitable zone large enough to prevent tidal locking to sustain life. The odds of complex life arising may be better on planets
Habitability of K-type main-sequence star systems
Habitability_of_K-type_main-sequence_star_systems
Earth-size exoplanet orbiting TRAPPIST-1
observations from the Spitzer Space Telescope. The planet is likely tidally locked, and has been depicted as an eyeball planet in artistic impressions
TRAPPIST-1f
Largest moon of Neptune
Triton's interior. This source of internal heat disappeared following tidal locking and circularization of the orbit. Two types of mechanisms have been
Triton_(moon)
exoplanets in its orbit due to low stellar flux, high probability of tidal locking, small circumstellar habitable zones and high stellar variation. Another
List of nearest terrestrial exoplanet candidates
List_of_nearest_terrestrial_exoplanet_candidates
Theories explaining the formation of Earth's Moon
1980s, and some points in its favor are the Moon's size, orbit, and tidal locking. One problem is understanding the capture mechanism. A close encounter
Origin_of_the_Moon
Moon of the dwarf planet Gonggong
It is thought to be tidally locked to Gonggong and may contribute to the maintenance of its highly eccentric orbit through tidal interactions or the Kozai
Xiangliu_(moon)
Sub-Neptune orbiting the red dwarf K2-18
can be seen passing in front of the star. The planet is most likely tidally locked to the star, although considering its orbital eccentricity, a spin-orbit
K2-18b
tidally locked to its large moon Ilmarë, though in this case it has been suggested that the Varda system is not old enough for tidal locking. Green, Daniel
Moon_of_38628_Huya
Movement of an object which leaves at least one point unchanged
bodies may lock their spin rotation to their orbital rotation around a larger body. This effect is called tidal locking; the Moon is tidal-locked to the Earth
Rotation
Shape of the Moon's sunlit portion as viewed from Earth
night phases of the lunar day as viewed from afar. Because the Moon is tidally locked to Earth, the cycle of phases takes one lunar month and moves across
Lunar_phase
Satellites that formed around their parent planet
on the Earth. Just as Earth raises tidal bulges on the Moon which results in tidal locking, the Moon raises tidal bulges on the Earth which manifest most
Regular_moon
Second-largest moon of Saturn
equilibrium. It has a nearly circular orbit around Saturn, but it is also tidally locked, like Saturn's other major moons. It rotates with the same period it
Rhea_(moon)
1959. The far side of the Moon, permanently hidden from Earth due to tidal locking, was imaged for the first time by Luna 3 on 7 October 1959, revealing
List_of_missions_to_the_Moon
Planet outside of the Solar System
host star, a long trailing tail 14 million km (9 million mi) long. Tidally locked planets in a 1:1 spin-orbit resonance would have their star always shining
Exoplanet
Large, dark, basaltic plains on Earth's Moon
gravity field), and the mare basalts hardly contribute to this (see also tidal locking). (Hemispheric structures correspond to spherical harmonic degree 1
Lunar_mare
1634 novel by Johannes Kepler
view, the Earth remains fixed in the lunar sky as a consequence of tidal locking. The only small movements the Earth makes are due to the moon's librations
Somnium_(novel)
Planet with environment similar to Earth's
affected by climate, which is influenced by the orbit and rotation (or tidal locking) of the planet, each of which introduces further variables. Below is
Earth_analog
Second-largest moon of Jupiter
Europa and Ganymede—and is thus not appreciably tidally heated. Callisto's rotation is tidally locked to its orbit around Jupiter, so that it always faces
Callisto_(moon)
Phases of Earth as seen from the Moon
eclipses on the Moon Eclipse cycle Supermoon Tide Tidal force Tidal locking Tidal acceleration Tidal range Kordylewski clouds Lunar station Surface and
Earth_phase
Matter with biological processes
is subject to higher levels of magnetic activity and the effects of tidal locking from close orbits. Hence, stars in the intermediate mass range such
Life
Method for the stabilization and the orientation of various spacecraft
Space tether, a cable connecting multiple bodies in space Tidal locking, another effect of tidal forces Magnetorquers, a supplementary stabilization technique
Gravity-gradient stabilization
Gravity-gradient_stabilization
Rapidly rotating storm system
their parent star. As a result, many such planets are likely to be tidally locked, with slower rotation periods and one hemisphere permanently facing
Tropical_cyclone
Dim, low mass stars on the main sequence
dwarf would be so close to the parent star that they would likely be tidally locked. For a nearly circular orbit, this would mean that one side would be
Red_dwarf
Orbital radius at which a satellite might break up due to gravitational force
by its own force of gravity, will disintegrate because the first body's tidal forces exceed the second body's self-gravitation. Inside the Roche limit
Roche_limit
Long-term human settlement on the Moon
eclipses on the Moon Eclipse cycle Supermoon Tide Tidal force Tidal locking Tidal acceleration Tidal range Kordylewski clouds Lunar station Surface and
Moonbase
Small planetary-mass object
then tidal forces gradually slow its rotation until it is tidally locked; that is, it always presents the same face to its companion. Tidally locked bodies
Dwarf_planet
Overview of and topical guide to the Solar System
cloud Oort limit Related Double planet Lagrange point Moonlet Syzygy Tidal locking Outline of the Solar System Solar System portal Astronomy portal Earth
Outline_of_the_Solar_System
Moon of Saturn
the next moon inward, Iapetus is tidally locked while Hyperion is not, making it the most distant tidally locked moon in the Solar System. The moons
Iapetus_(moon)
Most massive dwarf planet
tidally locked to its moon Dysnomia, with a rotation period synchronous with the moon's orbital period of 15.78 Earth days. Dysnomia is also tidally locked
Eris_(dwarf_planet)
Sky from planet Mercury
to the high eccentricity of Mercury's orbit around the Sun. Due to tidal locking, three rotations of Mercury, is equal to two revolutions around the
Astronomy_on_Mercury
Body of salt water covering most of Earth
the effects on human timescales. (For example, tidal forces acting on rock may produce tidal locking between two planetary bodies.) Though primarily
Ocean
side. Since the same side of the Moon always faces the Earth due to tidal locking, the far side had not been seen until 20th-Century spacecraft. Hence
List of common misconceptions about science, technology, and mathematics
List_of_common_misconceptions_about_science,_technology,_and_mathematics
Types of planet by chemical mass
Earth's deserts. Mars Eyeball planet A terrestrial planet in which tidal locking induces a spatially dependent temperature gradient (the planet will
List_of_planet_types
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