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Look up eccentric or eccentricity in Wiktionary, the free dictionary. Eccentricity or eccentric may refer to: Eccentricity (behavior), odd behavior on
Eccentricity
Characteristic of conic sections
eccentricity of a circle is 0. The eccentricity of a non-circular ellipse is between 0 and 1. The eccentricity of a parabola is 1. The eccentricity of
Eccentricity_(mathematics)
Amount by which an orbit deviates from a perfect circle
In astrodynamics, the orbital eccentricity of an astronomical object is a dimensionless parameter that determines the amount by which its orbit around
Orbital_eccentricity
Vector in celestial mechanics
In celestial mechanics, the eccentricity vector of a Kepler orbit is the dimensionless vector with direction pointing from apoapsis to periapsis and with
Eccentricity_vector
Unusual or odd behavior on the part of an individual
Eccentricity (also called quirkiness) is an unusual or odd behavior on the part of an individual. This behavior would typically be perceived as unusual
Eccentricity_(behavior)
The eccentricity effect is a visual phenomenon that affects visual search. As retinal eccentricity increases (i.e. the light of the image enters the eye
Eccentricity_effect
Global climate cycles
quantitative analysis than James Croll's earlier hypothesis that variations in eccentricity, axial tilt, and precession combined to result in cyclical variations
Milankovitch_cycles
Angular eccentricity is one of many parameters which arise in the study of the ellipse or ellipsoid. It is denoted here by α (alpha). It may be defined
Angular_eccentricity
In vision, degrees of visual angle from the center of the eye
Horizontal eccentricity refers to the horizontal axis, measured in degrees, along the visual field. The blind spot extends from an eccentricity d1 to eccentricity
Horizontal_eccentricity
Term in geometry; longest and shortest semidiameters of an ellipse
an ellipse is related to the semi-minor axis's length b through the eccentricity e and the semi-latus rectum ℓ {\displaystyle \ell } , as follows: b =
Semi-major and semi-minor axes
Semi-major_and_semi-minor_axes
Plane curve
points are the same. The elongation of an ellipse is measured by its eccentricity e {\displaystyle e} , a number ranging from e = 0 {\displaystyle e=0}
Ellipse
Curve from a cone intersecting a plane
directrix, are in a fixed ratio, called the eccentricity. The type of conic is determined by the value of the eccentricity. In analytic geometry, a conic may be
Conic_section
Kepler orbit with an eccentricity of less than one
an orbit with an eccentricity of less than 1;[citation needed] this includes the special case of a circular orbit, with eccentricity equal to 0. Some
Elliptic_orbit
Disk rotating about an off-centre axle
In mechanical engineering, an eccentric is a circular disk (eccentric sheave) solidly fixed to a rotating axle with its centre offset from that of the
Eccentric_(mechanism)
Length of shortest path between two nodes of a graph
eccentricity, defined as ϵ ( v ) = max u ∈ V d ( v , u ) . {\displaystyle \epsilon (v)=\max _{u\in V}d(v,u).} A peripheral vertex, whose eccentricity
Distance_(graph_theory)
Play by Tennessee Williams
Summer and Smoke in the 1950s, and in 1964 he rewrote the play as The Eccentricities of a Nightingale. Summer and Smoke is set in Glorious Hill, Mississippi
Summer_and_Smoke
Parameters that define a specific orbit
particular use case. Eccentricity ( e ) — shape of the ellipse, describing how much it deviates from a perfect a circle. An eccentricity of 0 (zero) describes
Orbital_elements
orbit: An orbit that has an eccentricity of 0 and whose path traces a circle. Elliptic orbit: An orbit with an eccentricity greater than 0 and less than
List_of_orbits
Small near-Earth asteroid
1.003 AU, an orbital eccentricity of 0.108, and an orbital inclination of approximately 2°, placing it in the low-eccentricity, low-inclination Arjuna
2025_PN7
2026 American comedy horror television series
consensus reads, "Katie Dippold successfully continues to invest in eccentricity with this outlandish horror-comedy that stokes the genre's well-worn
Widow's_Bay
Book by John Timbs
English Eccentrics and Eccentricities was written by John Timbs and published first in two volumes by Richard Bentley in New Burlington Street, London
English Eccentrics and Eccentricities
English_Eccentrics_and_Eccentricities
Concept in astrodynamics
escape the central object's gravitational field; expressed as orbital eccentricity designated by any number more than 1. Under simplistic assumptions a
Hyperbolic_trajectory
Surface formed by rotating an ellipse
{a^{2}}{c^{2}}}.} In both cases, eo and ep may be identified as the eccentricity (see ellipse). These formulas are identical in the sense that the formula
Spheroid
Interstellar comet in 2025
known as the orbital eccentricity. Whereas elliptical orbits have an eccentricity less than 1, hyperbolic orbits have an eccentricity greater than 1. For
3I/ATLAS
Corrective contact lenses
Therapy (CRT), Accelerated Orthokeretology, Cornea Corrective Contacts, Eccentricity Zero Molding, and Gentle Vision Shaping System (GVSS), is the use of
Orthokeratology
Martian orbit around the Sun
524 astronomical units (228 million km) (12.673 light minutes), and an eccentricity of 0.0934. The planet orbits the Sun in 687 days and travels 9.55 AU
Orbit_of_Mars
Large trans-Neptunian object in the scattered disc
around the Sun. 2017 OF201 has an extremely elongated orbit with an eccentricity of 0.95, which together with its large orbital distance makes it an extreme
2017_OF201
Body scale based on waist circumference and height
of a person's individual body shape. Based on the principle of body eccentricity, it provides a visual and anthropometric tool for health evaluation.
Body_roundness_index
Type of high-latitude satellite orbit
properties: Argument of perigee: 270° Inclination: 63.4° Period: 718 minutes Eccentricity: 0.74 Semi-major axis: 26,600 km (16,500 mi) The argument of perigee
Molniya_orbit
Orbit keeping the satellite at a fixed longitude above the equator
whose precise characteristics depend on the orbit's inclination and eccentricity. A circular geosynchronous orbit has a constant altitude of 35,786 km
Geosynchronous_orbit
have an incoming heliocentric eccentricity much higher than 1, and should rarely have an incoming barycentric eccentricity of above 1, as that would imply
List of Solar System objects by greatest aphelion
List_of_Solar_System_objects_by_greatest_aphelion
American musician (born 1969)
on remaining friends with Marilyn Manson: 'He encouraged all of my eccentricities'". The Independent. Archived from the original on May 10, 2016. Retrieved
Marilyn_Manson
Region of chromaticity diagram
discrimination ellipses grow in size as the eccentricity increases, because the human visual acuity drops sharply with eccentricity. The study also builds a computational
MacAdam_ellipse
Laws describing planetary orbits
{\displaystyle c} is the linear eccentricity. Thus the difference in areas is 2 b c . {\displaystyle 2bc.} Since the eccentricity is given by e = c a {\displaystyle
Kepler's laws of planetary motion
Kepler's_laws_of_planetary_motion
Exoplanet partially in the habitable zone
has an extremely high eccentricity, which could, perhaps, play a part in its habitability. The planet, due to its high eccentricity, could go through frigid
TOI-2257_b
Hypothetical Solar System planet
lower eccentricities, after which they pass through a second phase of high eccentricity perpendicular orbits, before returning to low eccentricity and inclination
Planet_Nine
Largest moon of Jupiter
last episode of the eccentricity excitation happened only several hundred million years ago. Because Ganymede's orbital eccentricity is relatively low—on
Ganymede_(moon)
Psychedelic drug
California, I admittedly chalked up these stories to some kind of West Coast eccentricity" Oeric ON, McKenna T (1975). The Invisible Landscape: Mind, Hallucinogens
Dimethyltryptamine
Jovian planet that orbits its star in an eccentric orbit
with an eccentricity of less than 0.1. However, two-thirds of the exoplanets discovered in 2006 have elliptical orbits with an eccentricity of 0.2 or
Eccentric_Jupiter
Third planet from the Sun
perihelion = a × (1 – e), where a is the semi-major axis and e is the eccentricity. The difference between Earth's perihelion and aphelion is 5 million
Earth
Vector used in astronomy
re-formulated several times; for example, it is equivalent to the dimensionless eccentricity vector of celestial mechanics. Its first use seems to go back at least
Laplace–Runge–Lenz_vector
Area of the Solar System beyond the planets, comprising small bodies
mean-motion resonances removes the higher-eccentricity objects from the cold belt, truncating its eccentricity distribution. Being distant from the Sun
Kuiper_belt
Highly elliptical and highly inclined synchronous orbit
(approximately 63.4°), an orbital period of one sidereal day, and a typical eccentricity between 0.2 and 0.3. A satellite placed in this orbit spends most of
Tundra_orbit
Moon of Eris
Dysnomia has a nearly circular orbit around Eris, with a low orbital eccentricity of 0.0062±0.0010. Over the course of Dysnomia's orbit, its distance from
Dysnomia_(moon)
British Army officer (1887–1976)
speculated that this was the cause of many of apparent behaviours and eccentricities. A notorious instance of Montgomery's behaviour occurred during the
Bernard_Montgomery
Hypotheses about Triton's origin
Nereid was also captured in this period. As a result, Triton's high eccentricity phase would have greatly perturbed any other irregular moons present
Capture_of_Triton
Natural satellite orbiting Earth
Astronomy (SOFIA). The Moon's orbit is slightly elliptical, with an orbital eccentricity of 0.055. The semi-major axis of the geocentric lunar orbit, called the
Moon
Component of an orbit
line, or line of apsides, is an imaginary line defined by an orbit's eccentricity vector. It is strictly defined for elliptic, parabolic, and hyperbolic
Apse_line
Irregular moon of Neptune
orbital period of 8.6 Earth years. S/2002 N 5 has an average orbital eccentricity of 0.43 and an average inclination of 46.3° with respect to the ecliptic
S/2002_N_5
British music hall performer (1870–1948)
best loved music hall performers. She became known as "The Essence of Eccentricity". She dressed in ultra-tight skirts — so tight in fact, that she would
Nellie_Wallace
Irregular moon of Neptune
to the apocentre, showing the eccentricity. The satellite is in Kozai resonance, i.e. its inclination and eccentricity are coupled (the inclination of
Sao_(moon)
Orbit around Earth between 160 and 2000 km
of 128 minutes or less (making at least 11.25 orbits per day) and an eccentricity less than 0.25. Most of the artificial objects in outer space are in
Low_Earth_orbit
Rotation of a celestial body's orbital line of apsides
showed that for a planet, the major semi-axis of its orbit being a, the eccentricity of the orbit e and the period of revolution T, then the apsidal precession
Apsidal_precession
Turkish Empire (c. 1299–1922)
1577, where he carried out observations until 1580. He calculated the eccentricity of the Sun's orbit and the annual motion of the apogee. However, the
Ottoman_Empire
Icelandic singer (born 1965)
greatest albums of all time. During this period, the press exalted Björk's eccentricity by creating a "pixie" persona around her, a descriptor she later confronted
Björk
Apparent solar time minus mean solar time
23.44 degrees relative to the plane of the Earth's equator; and the eccentricity of the Earth's orbit around the Sun, which is about 0.0167. The equation
Equation_of_time
Cyclic climate pattern
The parameters include the precession of the equinoxes, obliquity, and eccentricity as put forth by the Milankovitch theory. The precession of the equinoxes
North_African_climate_cycles
American television sitcom
observer of human behavior and often the wisest member of the group. These eccentricities allow him to pick up on flaws the other characters have and tend to
Community_(TV_series)
2024 television series
more compelling mystery to hang its quips on, but the series' sheer eccentricity makes for an intriguing enough tale from the old sod." Metacritic, which
Bodkin_(TV_series)
Discrepancy between past temperatures and the amount of incoming solar radiation
Milankovitch cycle in the range of 100,000 years, related to Earth's orbital eccentricity, its contribution to variation in insolation is much smaller than those
100,000-year_problem
Gravitational-wave observation
ISSN 0035-8711. Romero-Shaw, I.; et al. (23 October 2020). "GW190521: Orbital Eccentricity and Signatures of Dynamical Formation in a Binary Black Hole Merger Signal"
GW190521
Oort cloud comet
condensation when 1.2 AU (180 million km) from the Sun. The orbital eccentricity is slightly greater than 1 at the JPL SBDB epoch 2025 solution as the
C/2024_E1_(Wierzchoś)
2026 Indian Malayalam-language film
its storytelling demands patience. But its themes — though wrapped in eccentricity — are relatable, sharp and, at times, genuinely funny. The Indian Express
Masthishka_Maranam
Celestial orbit whose trajectory is a conic section in the orbital plane
axis, which defines the size of the orbit e {\displaystyle e} is the eccentricity, which defines the shape of the orbit θ {\displaystyle \theta } is the
Kepler_orbit
Type of orbit
celestial mechanics a parabolic trajectory is a Kepler orbit with the eccentricity (e) equal to 1 and is an unbound orbit that is exactly on the border
Parabolic_trajectory
Scenario for the dynamical evolution of the Solar System
Saturn is twice that of Jupiter. This resonance increases their orbital eccentricities, destabilizing the entire planetary system. The arrangement of the giant
Nice_model
Terrestrial planet orbiting the star Proxima Centauri
Sun. As of 2021[update], it is unclear whether it has a significant eccentricity but Proxima Centauri b is unlikely to have any obliquity. The age of
Proxima_Centauri_b
Concept in gravitational orbital mechanics
of periapsis Eccentricity Inclination Mean anomaly Orbital nodes Semi-major axis True anomaly Types of two-body orbits by eccentricity Circular orbit
Vis-viva_equation
Septuple star system in the constellation Crux
semi-major axis of 3.0 au and eccentricity of 0.40, although an orbital period of 202.9 days coupled with a higher eccentricity of 0.64 and a semi-major axis
Acrux
Largest moon of Saturn
Titan overwhelmingly dominates Saturn's system and has a high orbital eccentricity not immediately explained by co-accretion alone. A proposed model for
Titan_(moon)
Interstellar comet in 2019
local time) in MARGO Observatory. 2I/Borisov has a heliocentric orbital eccentricity of 3.36 and is not bound to the Sun. The comet passed through the ecliptic
2I/Borisov
Binary star in the constellation Draco
separated by 26.814 solar radii (18,654,000 km; 0.12470 au) with an eccentricity of 0.036. Both are F-type main-sequence stars with identical stellar
HP_Draconis
Seventh planet from the Sun
73556 billion km) Semi-major axis 19.19126 AU (2.870972 billion km) Eccentricity 0.04717 Orbital period (sidereal) 84.0205 yr 30,688.5 d 42,718 Uranian
Uranus
Large, round non-stellar astronomical object
elements: The eccentricity of an orbit describes the elongation of a planet's elliptical (oval) orbit. Planets with low eccentricities have more circular
Planet
Speed at which a body orbits around the barycenter of a system
it needs to move faster to cover the same area. For orbits with small eccentricity, the length of the orbit is close to that of a circular one, and the
Orbital_speed
Plane curve: conic section
called the focal distance or linear eccentricity. The quotient c a {\displaystyle {\tfrac {c}{a}}} is the eccentricity e {\displaystyle e} . The equation
Hyperbola
2022 American gothic horror television series
performance was "directly taken from the novels, as opposed to the camp eccentricity of Tom Cruise". IndieWire included Reid in its best film and TV performance
Interview with the Vampire (TV series)
Interview_with_the_Vampire_(TV_series)
English novelist (1775–1817)
case the adverse judgement merely reveals the special limitations or eccentricities of the critic, leaving Jane Austen relatively untouched". Austen's works
Jane_Austen
Binary star system
TNG. XIV. Investigating giant planet migration history via improved eccentricity and mass determination for 231 transiting planets". Astronomy & Astrophysics
WASP-94
Triple stellar system in the constellation Orion
complete an orbit around each other every 2,570 days (7 years). The orbital eccentricity is equivalent to 0.3. HD 39118 can be seen in the northern celestial
HD_39118
Center of mass of multiple bodies orbiting each other
distance between the bodies varies between the apses, depending on the eccentricity, e. Hence, the position of the barycenter varies too, and it is possible
Barycenter_(astronomy)
Outermost moon of Neptune
axis fluctuates between 49 and 53 million km (30 and 33 million mi), eccentricity between 0.32 and 0.70, and inclination between 129° and 139°. For this
S/2021_N_1
Fictional character created by Blake Edwards
Blake Edwards' farcical The Pink Panther series. Clouseau's immense ego, eccentricity, exaggerated French accent, and prominent mustache are all a parody of
Inspector_Clouseau
Hungarian and American mathematician and physicist (1903–1957)
Macrae 1992, pp. 170–171. Regis, Ed (1987). Who Got Einstein's Office?: Eccentricity and Genius at the Institute for Advanced Study. Reading, Massachusetts:
John_von_Neumann
Second planet from the Sun
circular, with an eccentricity of less than 0.01. Simulations of the early solar system orbital dynamics have shown that the eccentricity of the Venus orbit
Venus
Dynamical group of trans-Neptunian objects
bodies beyond 40 AU is the cubewano family, while bodies with higher eccentricities (0.05 to 0.34) and semi-major axes close to the 3:2 Neptune resonance
Plutino
Outer moon of Jupiter
inclination of about 30° to the ecliptic, in a prograde direction and with an eccentricity of 0.196. Its orbit is continuously changing due to solar and planetary
Elara_(moon)
Phenomenon affecting the orbit of a binary system
constant value, which in turn leads to a periodic exchange between its eccentricity and inclination. The process occurs on timescales much longer than the
Kozai_mechanism
American rapper (born 1995)
also her live performances which typically are infused with a touch of eccentricity." Her extensive online presence and bold persona have at times garnered
Doja_Cat
Moon of Saturn
mythological figures associated with shepherds. The inclination and eccentricity of Daphnis's orbit are very small, but distinguishable from zero. Both
Daphnis_(moon)
Periodic comet
240 BC. Its orbit around the Sun is highly elliptical, with an orbital eccentricity of 0.967 (with 0 being a circle and 1 being a parabolic trajectory).
Halley's_Comet
Nearest star to the Solar System
Centre that varies from 27 to 31 kly (8.3 to 9.5 kpc), with an orbital eccentricity of 0.07. Proxima Centauri has been suspected to be a companion of the
Proxima_Centauri
Disked object that eclipsed V1400 Centauri
for a range of possible orbital periods depending on J1407b's orbital eccentricity: if J1407b has a circular orbit with a constant orbital speed, then it
J1407b
Geographic coordinate specifying north-south position
or semi-minor axis, b; or (2) the (first) flattening, f; or (3) the eccentricity, e. These parameters are not independent: they are related by f = a −
Latitude
High proper motion red dwarf in Crater
al. (2021) Planet c: Greklek-McKeon et al. (2025) Planet d's mass and eccentricity: Greklek-McKeon et al. (2025); miscellaneous properties from Peterson
LP_791-18
Earth-centered orbit above low Earth orbit and below geostationary orbit
377 mi). The Molniya orbit has a high inclination of 63.4° and high eccentricity of 0.722 with a period of 12 hours, so a satellite spends most of its
Medium_Earth_orbit
Maximum eccentricity for which a power series for Kepler's equation converges
the maximum value of the eccentricity for which a solution to Kepler's equation, in terms of a power series in the eccentricity, converges. It is approximately
Laplace_limit
Irregular moon of Uranus
in the Kozai resonance, which causes large variations in its orbital eccentricity and inclination over a 500-year period. Margaret is estimated to have
Margaret_(moon)
Star in the constellation Cancer
066 K (793 °C; 1,459 °F) if it is tidally locked. It has a low orbital eccentricity and appears to be misaligned with its star's spin axis. HD 73344 c is
HD_73344
Type of geocentric orbit
other orbital parameters such as argument of periapsis and the orbital eccentricity evolve, due to higher-order perturbations in the Earth's gravitational
Sun-synchronous_orbit
ECCENTRICITY
ECCENTRICITY
ECCENTRICITY
ECCENTRICITY
Girl/Female
American, Australian, British, Dutch, English, Finnish, French, German, Norse, Scandinavian, Swedish, Teutonic
Noble; Welfare; Battle Woman; Battle Stronghold; Ready for Battle; A Valkyrie; War
Male
Gaelic
Gaelic form of Latin Alexandrus, ALISTAR means "defender of mankind."
Girl/Female
French, German, Irish, Latin
Dove
Boy/Male
Indian, Kannada
Lord Ganesh
Biblical
paste of dry figs
Boy/Male
Hindu, Indian
Son of the River
Boy/Male
Sikh
Girl/Female
Assamese, Gujarati, Hindu, Indian, Kannada, Malayalam, Marathi, Mythological, Sanskrit, Tamil, Telugu
Brought Up by Birds
Boy/Male
Hindu, Indian, Marathi
Protected by Lord Shiva
Girl/Female
Muslim/Islamic
Wild Rose
ECCENTRICITY
ECCENTRICITY
ECCENTRICITY
ECCENTRICITY
ECCENTRICITY
n.
Singularity; strangeness; eccentricity; irregularity; uncouthness; as, the oddness of dress or shape; the oddness of an event.
n.
One who has some peculiarity or eccentricity of character, which he indulges in odd or whimsical ways.
n.
The state of being eccentric; deviation from the customary line of conduct; oddity.
n.
The distance of the center of figure of a body, as of an eccentric, from an axis about which it turns; the throw.
n.
A sudden turn or start of the mind; a temporary eccentricity; a freak; a fancy; a capricious notion; a humor; a caprice.
a.
A personal frailty or failing; foible; eccentricity; a weakness or defect.
a.
Resembling fantasies in irregularity, caprice, or eccentricity; irregular; oddly shaped; grotesque.
n.
A celestial body which revolves about the sun in an orbit of a moderate degree of eccentricity. It is distinguished from a comet by the absence of a coma, and by having a less eccentric orbit. See Solar system.
n.
A person of marked eccentricity.
n.
The ratio of the distance between the center and the focus of an ellipse or hyperbola to its semi-transverse axis.
n.
The extreme movement given to a sliding or vibrating reciprocating piece by a cam, crank, eccentric, or the like; travel; stroke; as, the throw of a slide valve. Also, frequently, the length of the radius of a crank, or the eccentricity of an eccentric; as, the throw of the crank of a steam engine is equal to half the stroke of the piston.
n.
A peculiarity of physical or mental constitution or temperament; a characteristic belonging to, and distinguishing, an individual; characteristic susceptibility; idiocrasy; eccentricity.
pl.
of Eccentricity
n.
The ratio of the distance of the center of the orbit of a heavenly body from the center of the body round which it revolves to the semi-transverse axis of the orbit.