A straight line drawn through the periapsis and apoapsis is the line of apsides.
From the en.wikipedia.org
A line drawn from periapsis to apoapsis is the line-of-apsides.
From the en.wikipedia.org
As a planet approaches apoapsis, its velocity will decrease.
From the en.wikipedia.org
The eccentricity of 0.7512 gives it an apoapsis that is seven times its periapsis distance from Neptune.
From the en.wikipedia.org
The point where the satellite is farthest from Earth is called apogee, apoapsis, or sometimes apifocus or apocentron.
From the en.wikipedia.org
The superior conjunction between Io and Europa always occurs when Io is at periapsis and Europa at apoapsis.
From the en.wikipedia.org
The signal looked like a strong enhancement of the forward-scattering at the wavelength 3.6 cm near ring's apoapsis.
From the en.wikipedia.org
There is no periapsis or apoapsis.
From the en.wikipedia.org
Notably, a prograde impulse given at periapsis raises the altitude at apoapsis, and vice versa, and a retrograde impulse does the opposite.
From the en.wikipedia.org
More examples
(astronomy) the point in an orbit farthest from the body being orbited
An apsis (Greek: u1F01u03C8u03AFu03C2; plural apsides /u02C8u00E6psu1D7Bdiu02D0z/, Greek: u1F01u03C8u03AFu03B4u03B5u03C2) is an extreme point in an object's orbit. The word comes via Latin from Greek and is cognate with apse...
The point in an orbit when the two objects are farthest apart. Special names are given to this orbital point for commonly used systems: see apastron , aphelion and apogee .
(inam manie loghatisho nemidonam fekonam hamon noghte oj o ina bashe)
The orbital point, of an object orbiting a planet, of greatest distance from the planet.