-
primary body to the
orbiting body when the
latter is located: 1) at the
periapsis point, or 2) at the
apoapsis point (compare both graphics,
second figure)...
- "longitude of
periapsis" or "longitude of periastron" are
often used
synonymously with "argument of
periapsis". In
astrodynamics the
argument of
periapsis ω can...
- the
longitude of
periapsis (e.g., mean
longitude and true longitude) will also be compound. Sometimes, the term
longitude of
periapsis is used to refer...
-
between the
apoapsis and
periapsis. The
portion of the semi-major axis
extending from the
primary at one
focus to the
periapsis is
shown as a
purple line...
-
reaches the apoapsis, a
second engine firing adds
energy to
raise the
periapsis,
putting the
spacecraft in the
larger circular orbit. Due to the reversibility...
- 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...
- 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 velocity...
-
point in its orbit. The
maximum (instantaneous)
orbital speed occurs at
periapsis (perigee, perihelion, etc.),
while the
minimum speed for
objects in closed...
-
between the orbit's
periapsis and
apoapsis (also
known as the
major axis) for
parabolic and
hyperbolic orbits –
between the orbit's
periapsis and
focus For...
- non-circularity of an
orbit Eccentric anomaly, the
angle between the
direction of
periapsis and the
current position of an
object on its
orbit Eccentricity vector...
