The argument of periapsis (also called argument of perifocus or argument of pericenter), symbolized as ω (omega), is one of the orbital elements of an...

longitude of perihelion ϖ, which is the sum of the longitude of the ascending node Ω, and the argument of perihelion ω. The longitude of periapsis is a compound...

1) at the periapsis point, or 2) at the apoapsis point (compare both graphics, second figure). The line of apsides denotes the distance of the line that...

as argument of periapsis and the orbital eccentricity evolve, due to higher-order perturbations in the Earth's gravitational field, the pressure of sunlight...

Argument of periapsis (ω) defines the orientation of the ellipse in the orbital plane, as an angle measured from the ascending node to the periapsis (the...

body will be at periapsis. If this is less than planet's radius an impact should be expected. The distance of closest approach, or periapsis distance, is...

perihelion (periapsis—nearest point to the Sun) on anywhere from January 2 to January 5, the point of March equinox on March 19, 20, or 21, the point of June...

the time of periapsis passage μ {\displaystyle \mu } is the standard gravitational parameter p {\displaystyle p} is the semi-latus rectum of the trajectory...

point in its orbit. The maximum (instantaneous) orbital speed occurs at periapsis (perigee, perihelion, etc.), while the minimum speed for objects in closed...

defines the position of a body moving along a Keplerian orbit. It is the angle between the direction of periapsis and the current position of the body, as seen...

of periapsis is the sum of the ascending node and argument of periapsis, so subtracting Vanth's ascending node of 53.49°±0.33° from its longitude of periapsis...

vector to change continuously as opposed to the eccentricity and argument of periapsis parameters for which eccentricity zero (circular orbit) corresponds...

anomaly, ϖ ≡ ω + Ω is the longitude of orbit's periapsis, ω is the argument of periapsis, and Ω is the longitude of the orbit's ascending node, Multon...

changes the argument of periapsis. However, targeting in this manner limits the mission designer to changing the plane only along the line of apsides.[citation...

and closest (periapsis) from its primary body. The apsidal precession is the first time derivative of the argument of periapsis, one of the six main orbital...

of a circle. In this case, not only the distance, but also the speed, angular speed, potential and kinetic energy are constant. There is no periapsis...

Africa on 22 February 2023. The comet will pass perihelion at a distance of 0.39 AU (58 million km; 36 million mi) on 27 September 2024, when it could...

periapsis of an elliptical orbit) accelerates along its direction of travel to escape velocity, the point of acceleration will form the periapsis of the...

related classical orbital elements, the longitude of the ascending node and the argument of periapsis. In these cases, alternative orbital elements or...

between two passages of an object at its periapsis (in the case of the planets in the Solar System, called the perihelion), the point of its closest approach...

longitude of periapsis for Dysnomia's orbit, which is 307°±12°.: 5  The longitude of periapsis is the sum of the ascending node and argument of periapsis, so...

ellipse extends above the surface, plus the periapsis distance (the distance the ellipse extends beyond the center of the Earth). For the Earth and a {\displaystyle...

other time. If an impulsive burn of Δv is performed at periapsis in a parabolic orbit, then the velocity at periapsis before the burn is equal to the escape...

and the apogee burn (or apogee kick); more generally, they are labelled periapsis and apoapsis burns. Alternately, the second burn to circularize the orbit...

at the time of the burn. Therefore the maximum kinetic energy is obtained when the burn occurs at the vehicle's maximum velocity (periapsis). The Oberth...

elliptical orbit is a Kepler orbit with an eccentricity of less than 1; this includes the special case of a circular orbit, with eccentricity equal to 0. In...

burn sends the spacecraft into the second elliptical orbit with periapsis at the radius of the final desired orbit, where a third burn is performed, injecting...

elliptical orbit with an inclination of 63.4 degrees, an argument of perigee of 270 degrees, and an orbital period of approximately half a sidereal day....

perturbation is the complex motion of a massive body subjected to forces other than the gravitational attraction of a single other massive body. The other...

with one of these, or a close encounter would eject it altogether from the Jovian system. Due to the Kozai effect, Carpo's argument of periapsis never precesses...