Do all orbits have a perigee and an apogee?
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Like all celestial objects with elliptical orbits, the moon's speed varies on its path around the earth. It speeds up when it is at its "perigee"and slows down when it is at the "apogee" . This means that at its perigee, the moon's orbital speed is faster than its rotational speed.
super moon (perigee)
micro moon (apogee)
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The Earth's two apsides are the farthest point, aphelion, and the nearest point, perihelion, of its orbit around the host Sun.
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Apsis.
(1) farthest apogee
(X) orbiter Moon
(3) host Earth
(2) nearest perigee
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