Faster access than browser!
91 relations: Aberration of light, Analytical dynamics, Angular momentum, Aquarius (constellation), Aries (constellation), Astrological sign, Astronomical nutation, Astronomical unit, Axial tilt, Barycenter, Cancer (constellation), Capricornus, Cartesian coordinate system, Celestial coordinate system, Celestial equator, Celestial pole, Celestial sphere, Center of mass, Cetus, Conjunction (astronomy), Constellation, Coplanarity, December solstice, Diurnal motion, Earth, Earth radius, Earth's orbit, Earth's rotation, Eclipse, Ecliptic coordinate system, Epoch (astronomy), Equation of time, Equator, Equatorial coordinate system, Equinox, Figure of the Earth, Fixed stars, Formation and evolution of the Solar System, Fundamental ephemeris, Fundamental plane (spherical coordinates), Gemini (constellation), Gregorian calendar, Invariable plane, Jet Propulsion Laboratory Development Ephemeris, Julian day, June solstice, Kilometre, Leo (constellation), Libra (constellation), March equinox, ..., Mars, Mercury (planet), Minute and second of arc, Moon, Newcomb's Tables of the Sun, Nutation, Observational astronomy, Ophiuchus, Opposition (planets), Orbit, Orbit of the Moon, Orbital inclination, Orbital node, Orbital plane (astronomy), Orbital pole, Perpendicular, Perturbation (astronomy), Pisces (constellation), Plane (geometry), Planet, Precession, Protoplanetary disk, Right ascension, Sagittarius (constellation), Scorpius, September equinox, Sidereal time, Solar System, Solstice, Spherical coordinate system, Summation, Sun, Sunrise, Sunset, Taurus (constellation), Terrestrial Time, Tropical year, Venus, Virgo (constellation), Year, Zodiac. Expand index (41 more) »
Aberration of light
The aberration of light (also referred to as astronomical aberration, stellar aberration, or velocity aberration) is an astronomical phenomenon which produces an apparent motion of celestial objects about their true positions, dependent on the velocity of the observer.
New!!: Ecliptic and Aberration of light · See more »
Analytical dynamics
In classical mechanics, analytical dynamics, or more briefly dynamics, is concerned with the relationship between motion of bodies and its causes, namely the forces acting on the bodies and the properties of the bodies, particularly mass and moment of inertia.
New!!: Ecliptic and Analytical dynamics · See more »
Angular momentum
In physics, angular momentum (rarely, moment of momentum or rotational momentum) is the rotational equivalent of linear momentum.
New!!: Ecliptic and Angular momentum · See more »
Aquarius (constellation)
Aquarius is a constellation of the zodiac, situated between Capricornus and Pisces.
New!!: Ecliptic and Aquarius (constellation) · See more »
Aries (constellation)
Aries is one of the constellations of the zodiac.
New!!: Ecliptic and Aries (constellation) · See more »
Astrological sign
In Western astrology, astrological signs are the twelve 30° sectors of the ecliptic, starting at the vernal equinox (one of the intersections of the ecliptic with the celestial equator), also known as the First Point of Aries.
New!!: Ecliptic and Astrological sign · See more »
Astronomical nutation
Astronomical nutation is a phenomenon which causes the orientation of the axis of rotation of a spinning astronomical object to vary over time.
New!!: Ecliptic and Astronomical nutation · See more »
Astronomical unit
The astronomical unit (symbol: au, ua, or AU) is a unit of length, roughly the distance from Earth to the Sun.
New!!: Ecliptic and Astronomical unit · See more »
Axial tilt
In astronomy, axial tilt, also known as obliquity, is the angle between an object's rotational axis and its orbital axis, or, equivalently, the angle between its equatorial plane and orbital plane.
New!!: Ecliptic and Axial tilt · See more »
Barycenter
The barycenter (or barycentre; from the Ancient Greek βαρύς heavy + κέντρον centre) is the center of mass of two or more bodies that are orbiting each other, which is the point around which they both orbit.
New!!: Ecliptic and Barycenter · See more »
Cancer (constellation)
Cancer is one of the twelve constellations of the zodiac.
New!!: Ecliptic and Cancer (constellation) · See more »
Capricornus
Capricornus is one of the constellations of the zodiac.
New!!: Ecliptic and Capricornus · See more »
Cartesian coordinate system
A Cartesian coordinate system is a coordinate system that specifies each point uniquely in a plane by a pair of numerical coordinates, which are the signed distances to the point from two fixed perpendicular directed lines, measured in the same unit of length.
New!!: Ecliptic and Cartesian coordinate system · See more »
Celestial coordinate system
In astronomy, a celestial coordinate system is a system for specifying positions of celestial objects: satellites, planets, stars, galaxies, and so on.
New!!: Ecliptic and Celestial coordinate system · See more »
Celestial equator
The celestial equator is the great circle of the imaginary celestial sphere on the same plane as the equator of Earth.
New!!: Ecliptic and Celestial equator · See more »
Celestial pole
The north and south celestial poles are the two imaginary points in the sky where the Earth's axis of rotation, indefinitely extended, intersects the celestial sphere.
New!!: Ecliptic and Celestial pole · See more »
Celestial sphere
In astronomy and navigation, the celestial sphere is an abstract sphere with an arbitrarily large radius concentric to Earth.
New!!: Ecliptic and Celestial sphere · See more »
Center of mass
In physics, the center of mass of a distribution of mass in space is the unique point where the weighted relative position of the distributed mass sums to zero, or the point where if a force is applied it moves in the direction of the force without rotating.
New!!: Ecliptic and Center of mass · See more »
Cetus
Cetus is a constellation.
New!!: Ecliptic and Cetus · See more »
Conjunction (astronomy)
In astronomy, a conjunction occurs when two astronomical objects or spacecraft have either the same right ascension or the same ecliptic longitude, usually as observed from Earth.
New!!: Ecliptic and Conjunction (astronomy) · See more »
Constellation
A constellation is a group of stars that are considered to form imaginary outlines or meaningful patterns on the celestial sphere, typically representing animals, mythological people or gods, mythological creatures, or manufactured devices.
New!!: Ecliptic and Constellation · See more »
Coplanarity
In geometry, a set of points in space are coplanar if there exists a geometric plane that contains them all.
New!!: Ecliptic and Coplanarity · See more »
December solstice
The December solstice, also known as the southern solstice, is the solstice that occurs each December, typically between the 20th and the 22nd day of the month according to the Gregorian calendar.
New!!: Ecliptic and December solstice · See more »
Diurnal motion
Diurnal motion (lit, from dies, lit. "day") is an astronomical term referring to the apparent daily motion of stars around Earth, or more precisely around the two celestial poles.
New!!: Ecliptic and Diurnal motion · See more »
Earth
Earth is the third planet from the Sun and the only astronomical object known to harbor life.
New!!: Ecliptic and Earth · See more »
Earth radius
Earth radius is the approximate distance from Earth's center to its surface, about.
New!!: Ecliptic and Earth radius · See more »
Earth's orbit
Earth's orbit is the trajectory along which Earth travels around the Sun.
New!!: Ecliptic and Earth's orbit · See more »
Earth's rotation
Earth's rotation is the rotation of Planet Earth around its own axis.
New!!: Ecliptic and Earth's rotation · See more »
Eclipse
An eclipse is an astronomical event that occurs when an astronomical object is temporarily obscured, either by passing into the shadow of another body or by having another body pass between it and the viewer.
New!!: Ecliptic and Eclipse · See more »
Ecliptic coordinate system
The ecliptic coordinate system is a celestial coordinate system commonly used for representing the apparent positions and orbits of Solar System objects.
New!!: Ecliptic and Ecliptic coordinate system · See more »
Epoch (astronomy)
In astronomy, an epoch is a moment in time used as a reference point for some time-varying astronomical quantity, such as the celestial coordinates or elliptical orbital elements of a celestial body, because these are subject to perturbations and vary with time.
New!!: Ecliptic and Epoch (astronomy) · See more »
Equation of time
The equation of time describes the discrepancy between two kinds of solar time.
New!!: Ecliptic and Equation of time · See more »
Equator
An equator of a rotating spheroid (such as a planet) is its zeroth circle of latitude (parallel).
New!!: Ecliptic and Equator · See more »
Equatorial coordinate system
The equatorial coordinate system is a celestial coordinate system widely used to specify the positions of celestial objects.
New!!: Ecliptic and Equatorial coordinate system · See more »
Equinox
An equinox is commonly regarded as the moment the plane (extended indefinitely in all directions) of Earth's equator passes through the center of the Sun, which occurs twice each year, around 20 March and 22-23 September.
New!!: Ecliptic and Equinox · See more »
Figure of the Earth
The figure of the Earth is the size and shape of the Earth in geodesy.
New!!: Ecliptic and Figure of the Earth · See more »
Fixed stars
The fixed stars (stellae fixae) comprise the background of astronomical objects that appear to not move relative to each other in the night sky compared to the foreground of Solar System objects that do.
New!!: Ecliptic and Fixed stars · See more »
Formation and evolution of the Solar System
The formation and evolution of the Solar System began 4.6 billion years ago with the gravitational collapse of a small part of a giant molecular cloud.
New!!: Ecliptic and Formation and evolution of the Solar System · See more »
Fundamental ephemeris
A fundamental ephemeris of the Solar System is a model of the objects of the system in space, with all of their positions and motions accurately represented.
New!!: Ecliptic and Fundamental ephemeris · See more »
Fundamental plane (spherical coordinates)
The fundamental plane in a spherical coordinate system is a plane of reference that divides the sphere into two hemispheres.
New!!: Ecliptic and Fundamental plane (spherical coordinates) · See more »
Gemini (constellation)
Gemini is one of the constellations of the zodiac.
New!!: Ecliptic and Gemini (constellation) · See more »
Gregorian calendar
The Gregorian calendar is the most widely used civil calendar in the world.
New!!: Ecliptic and Gregorian calendar · See more »
Invariable plane
The invariable plane of a planetary system, also called Laplace's invariable plane, is the plane passing through its barycenter (center of mass) perpendicular to its angular momentum vector.
New!!: Ecliptic and Invariable plane · See more »
Jet Propulsion Laboratory Development Ephemeris
The name Jet Propulsion Laboratory Development Ephemeris (followed by a number), the abbreviation JPL DE(number), or just DE(number) designates one of a series of models of the Solar System produced at the Jet Propulsion Laboratory in Pasadena, California, primarily for purposes of spacecraft navigation and astronomy.
New!!: Ecliptic and Jet Propulsion Laboratory Development Ephemeris · See more »
Julian day
Julian day is the continuous count of days since the beginning of the Julian Period and is used primarily by astronomers.
New!!: Ecliptic and Julian day · See more »
June solstice
The June solstice, also known as the northern solstice, is the solstice on the Earth that occurs each June falling on the 20th to 22nd according to the Gregorian calendar.
New!!: Ecliptic and June solstice · See more »
Kilometre
The kilometre (International spelling as used by the International Bureau of Weights and Measures; SI symbol: km; or) or kilometer (American spelling) is a unit of length in the metric system, equal to one thousand metres (kilo- being the SI prefix for). It is now the measurement unit used officially for expressing distances between geographical places on land in most of the world; notable exceptions are the United States and the road network of the United Kingdom where the statute mile is the official unit used.
New!!: Ecliptic and Kilometre · See more »
Leo (constellation)
Leo is one of the constellations of the zodiac, lying between Cancer the crab to the west and Virgo the maiden to the east.
New!!: Ecliptic and Leo (constellation) · See more »
Libra (constellation)
Libra is a constellation of the zodiac.
New!!: Ecliptic and Libra (constellation) · See more »
March equinox
The March equinox or Northward equinox is the equinox on the Earth when the subsolar point appears to leave the southern hemisphere and cross the celestial equator, heading northward as seen from Earth.
New!!: Ecliptic and March equinox · See more »
Mars
Mars is the fourth planet from the Sun and the second-smallest planet in the Solar System after Mercury.
New!!: Ecliptic and Mars · See more »
Mercury (planet)
Mercury is the smallest and innermost planet in the Solar System.
New!!: Ecliptic and Mercury (planet) · See more »
Minute and second of arc
A minute of arc, arcminute (arcmin), arc minute, or minute arc is a unit of angular measurement equal to of one degree.
New!!: Ecliptic and Minute and second of arc · See more »
Moon
The Moon is an astronomical body that orbits planet Earth and is Earth's only permanent natural satellite.
New!!: Ecliptic and Moon · See more »
Newcomb's Tables of the Sun
Newcomb's Tables of the Sun is the short title and running head of a work by the American astronomer and mathematician Simon Newcomb entitled "Tables of the Motion of the Earth on its Axis and Around the Sun" on pages 1–169 of "Tables of the Four Inner Planets" (1895), volume VI of the serial publication Astronomical Papers Prepared for the Use of the American Ephemeris and Nautical Almanac.
New!!: Ecliptic and Newcomb's Tables of the Sun · See more »
Nutation
Nutation (from Latin nūtātiō, "nodding, swaying") is a rocking, swaying, or nodding motion in the axis of rotation of a largely axially symmetric object, such as a gyroscope, planet, or bullet in flight, or as an intended behavior of a mechanism.
New!!: Ecliptic and Nutation · See more »
Observational astronomy
Observational astronomy is a division of astronomy that is concerned with recording data about the observable universe, in contrast with theoretical astronomy, which is mainly concerned with calculating the measurable implications of physical models.
New!!: Ecliptic and Observational astronomy · See more »
Ophiuchus
Ophiuchus is a large constellation straddling the celestial equator.
New!!: Ecliptic and Ophiuchus · See more »
Opposition (planets)
In positional astronomy, two astronomical objects are said to be in opposition when they are on opposite sides of the celestial sphere, as observed from a given body (usually Earth).
New!!: Ecliptic and Opposition (planets) · See more »
Orbit
In physics, an orbit is the gravitationally curved trajectory of an object, such as the trajectory of a planet around a star or a natural satellite around a planet.
New!!: Ecliptic and Orbit · See more »
Orbit of the Moon
The Moon orbits Earth in the prograde direction and completes one revolution relative to the stars in about 27.322 days (a sidereal month) and one revolution relative to the Sun in about 29.530 days (a synodic month).
New!!: Ecliptic and Orbit of the Moon · See more »
Orbital inclination
Orbital inclination measures the tilt of an object's orbit around a celestial body.
New!!: Ecliptic and Orbital inclination · See more »
Orbital node
An orbital node is either of the two points where an orbit intersects a plane of reference to which it is inclined.
New!!: Ecliptic and Orbital node · See more »
Orbital plane (astronomy)
The orbital plane of a revolving body is the geometric plane on which its orbit lies.
New!!: Ecliptic and Orbital plane (astronomy) · See more »
Orbital pole
An orbital pole is either point at the ends of an imaginary line segment that runs through the center of an orbit (of a revolving body like a planet) and is perpendicular to the orbital plane.
New!!: Ecliptic and Orbital pole · See more »
Perpendicular
In elementary geometry, the property of being perpendicular (perpendicularity) is the relationship between two lines which meet at a right angle (90 degrees).
New!!: Ecliptic and Perpendicular · See more »
Perturbation (astronomy)
In astronomy, perturbation is the complex motion of a massive body subject to forces other than the gravitational attraction of a single other massive body.
New!!: Ecliptic and Perturbation (astronomy) · See more »
Pisces (constellation)
Pisces is a constellation of the zodiac.
New!!: Ecliptic and Pisces (constellation) · See more »
Plane (geometry)
In mathematics, a plane is a flat, two-dimensional surface that extends infinitely far.
New!!: Ecliptic and Plane (geometry) · See more »
Planet
A planet is an astronomical body orbiting a star or stellar remnant that is massive enough to be rounded by its own gravity, is not massive enough to cause thermonuclear fusion, and has cleared its neighbouring region of planetesimals.
New!!: Ecliptic and Planet · See more »
Precession
Precession is a change in the orientation of the rotational axis of a rotating body.
New!!: Ecliptic and Precession · See more »
Protoplanetary disk
A protoplanetary disk is a rotating circumstellar disk of dense gas and dust surrounding a young newly formed star, a T Tauri star, or Herbig Ae/Be star.
New!!: Ecliptic and Protoplanetary disk · See more »
Right ascension
Right ascension (abbreviated RA; symbol) is the angular distance measured only eastward along the celestial equator from the Sun at the March equinox to the (hour circle of the) point above the earth in question.
New!!: Ecliptic and Right ascension · See more »
Sagittarius (constellation)
Sagittarius is one of the constellations of the zodiac.
New!!: Ecliptic and Sagittarius (constellation) · See more »
Scorpius
Scorpius is one of the constellations of the zodiac.
New!!: Ecliptic and Scorpius · See more »
September equinox
The September equinox (or Southward equinox) is the moment when the Sun appears to cross the celestial equator, heading southward.
New!!: Ecliptic and September equinox · See more »
Sidereal time
Sidereal time is a timekeeping system that astronomers use to locate celestial objects.
New!!: Ecliptic and Sidereal time · See more »
Solar System
The Solar SystemCapitalization of the name varies.
New!!: Ecliptic and Solar System · See more »
Solstice
A solstice is an event occurring when the Sun appears to reach its most northerly or southerly excursion relative to the celestial equator on the celestial sphere.
New!!: Ecliptic and Solstice · See more »
Spherical coordinate system
In mathematics, a spherical coordinate system is a coordinate system for three-dimensional space where the position of a point is specified by three numbers: the radial distance of that point from a fixed origin, its polar angle measured from a fixed zenith direction, and the azimuth angle of its orthogonal projection on a reference plane that passes through the origin and is orthogonal to the zenith, measured from a fixed reference direction on that plane.
New!!: Ecliptic and Spherical coordinate system · See more »
Summation
In mathematics, summation (capital Greek sigma symbol: ∑) is the addition of a sequence of numbers; the result is their sum or total.
New!!: Ecliptic and Summation · See more »
Sun
The Sun is the star at the center of the Solar System.
New!!: Ecliptic and Sun · See more »
Sunrise
Sunrise or sun up is the instant at which the upper edge of the Sun appears over the horizon in the morning.
New!!: Ecliptic and Sunrise · See more »
Sunset
Sunset or sundown is the daily disappearance of the Sun below the horizon as a result of Earth's rotation.
New!!: Ecliptic and Sunset · See more »
Taurus (constellation)
Taurus (Latin for "the Bull") is one of the constellations of the zodiac, which means it is crossed by the plane of the ecliptic.
New!!: Ecliptic and Taurus (constellation) · See more »
Terrestrial Time
Terrestrial Time (TT) is a modern astronomical time standard defined by the International Astronomical Union, primarily for time-measurements of astronomical observations made from the surface of Earth.
New!!: Ecliptic and Terrestrial Time · See more »
Tropical year
A tropical year (also known as a solar year) is the time that the Sun takes to return to the same position in the cycle of seasons, as seen from Earth; for example, the time from vernal equinox to vernal equinox, or from summer solstice to summer solstice.
New!!: Ecliptic and Tropical year · See more »
Venus
Venus is the second planet from the Sun, orbiting it every 224.7 Earth days.
New!!: Ecliptic and Venus · See more »
Virgo (constellation)
Virgo is one of the constellations of the zodiac.
New!!: Ecliptic and Virgo (constellation) · See more »
Year
A year is the orbital period of the Earth moving in its orbit around the Sun.
New!!: Ecliptic and Year · See more »
Zodiac
The zodiac is an area of the sky that extends approximately 8° north or south (as measured in celestial latitude) of the ecliptic, the apparent path of the Sun across the celestial sphere over the course of the year.
New!!: Ecliptic and Zodiac · See more »
Redirects here:
Astronomical ecliptic, Ecliptic circle, Ecliptic plane, Eclyptic, Plane of ecliptic, Plane of the ecliptic.
References
[1] https://en.wikipedia.org/wiki/Ecliptic
