astrodynamics, the orbital eccentricity of an astronomical object is a dimensionless parameter that determines the amount by which its orbit around another...

elliptic orbit or elliptical orbit is a Kepler orbit with an eccentricity of less than 1; this includes the special case of a circular orbit, with eccentricity...

hyperbolic partial differential equations. Kepler orbits Eccentricity vector Orbital eccentricity Roundness (object) Conic constant Thomas, George B...

than autumn. Greater eccentricity increases the variation in the Earth's orbital velocity. Currently, however, the Earth's orbit is becoming less eccentric...

the same area. For orbits with small eccentricity, the length of the orbit is close to that of a circular one, and the mean orbital speed can be approximated...

Eccentricity (graph theory) of a vertex in a graph Eccentricity (mathematics), a parameter associated with every conic section Orbital eccentricity,...

found that higher eccentricity orbits reduced the average tilts of the ETNOs' orbits. While there are many possible combinations of orbital parameters and...

eccentricities of the orbits of Uranus' inner satellites, and the anomalously high orbital inclination of Miranda. High past orbital eccentricities associated...

next orbit, that side will be in darkness all the time until the next sunrise after another 88 Earth days. Combined with its high orbital eccentricity, the...

theory such an orbit has the shape of a hyperbola. In more technical terms this can be expressed by the condition that the orbital eccentricity is greater...

shortening of the orbital period. Solar radiation pressure will in general perturb the eccentricity (i.e. the eccentricity vector); see Orbital perturbation...

In quantum mechanics, an atomic orbital (/ˈɔːrbɪtəl/) is a function describing the location and wave-like behavior of an electron in an atom. This function...

Even if an orbit remains Sun-synchronous, however, other orbital parameters such as argument of periapsis and the orbital eccentricity evolve, due to...

corresponding to the timeframes of periodic orbital cycles have been interpreted as evidence of orbital forcing on climate during greenhouse periods...

Orbital elements are the parameters required to uniquely identify a specific orbit. In celestial mechanics these elements are considered in two-body systems...

gravitation. Orbital mechanics is a core discipline within space-mission design and control. Celestial mechanics treats more broadly the orbital dynamics...

near-circular orbits (e<0.1). Most exoplanets with orbital periods of 20 days or less have near-circular orbits, i.e. very low eccentricity. That is thought...

In celestial mechanics, the eccentricity vector of a Kepler orbit is the dimensionless vector with direction pointing from apoapsis to periapsis and with...

A geosynchronous orbit (sometimes abbreviated GSO) is an Earth-centered orbit with an orbital period that matches Earth's rotation on its axis, 23 hours...

of orbital eccentricity opposes the temperature trends of the seasons in the Northern Hemisphere. In general, the effect of orbital eccentricity on Earth's...

(out of the orbital plane) causes rotation of the orbital plane without changing the period or eccentricity. In all instances, a closed orbit will still...

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...

momentum divided by the reduced mass; e {\displaystyle e} is the orbital eccentricity; a {\displaystyle a} is the semi-major axis. It is typically expressed...

the lowest layer. Orbital eccentricity habitable zone is low enough orbital eccentricity to support life. Elliptic orbit by eccentricity   0.0 ·   0.2 ·...

last episode of the eccentricity excitation happened only several hundred million years ago. Because Ganymede's orbital eccentricity is relatively low—on...

orbit Molniya orbit Nereid one of the outer moons of Neptune with a high orbital eccentricity of ~0.75 and is frequently perturbed Osculating orbit Orbit...

semi-major axes or eccentricities when they approach each other. Orbital parameters that are used to describe the relation of co-orbital objects are the...

0.2 or more. The typical exoplanet with an orbital period greater than five days has a median eccentricity of 0.23. The discovery of this type of exoplanet...

increase in orbital eccentricity of the orbiting object around the primary – an effect known as eccentricity pumping. In some cases where the orbit is eccentric...

surface. 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 lunar...