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Periapsis in Earth orbit
Answer for the clue "Periapsis in Earth orbit ", 7 letters:
perigee
Alternative clues for the word perigee
Word definitions for perigee in dictionaries
Douglas Harper's Etymology Dictionary
Word definitions in Douglas Harper's Etymology Dictionary
"point at which a celestial body is nearest the Earth," 1590s, from Modern Latin perigeum (15c.), from Late Greek peregeion , used by Ptolemy as a noun, properly neuter of adjective perigeios "near the earth," from peri ges , from peri "near" (see peri- ...
WordNet
Word definitions in WordNet
n. periapsis in Earth orbit; the point in its orbit where a satellite is nearest to the Earth [ant: apogee ]
The Collaborative International Dictionary
Word definitions in The Collaborative International Dictionary
Perigee \Per"i*gee\, Perigeum \Per`i*ge"um\, n. [NL. perigeum, fr. Gr. ? about, near + ? the earth: cf. F. p['e]rig['e]e.] (Astron.) That point, in the orbit of the moon or other body orbiting the earth, which is nearest to the earth; -- opposed ...
Usage examples of perigee.
Apollo lunar seismometers have found that moonquakes are most common during lunar perigee, when the Earth is closest to the Moon, and there are at least some hints of earthquakes at the same time.
After their orbits were stabilized with a perigee no less than a hundred thousand kilometres, their ores had been mined out and the refined metal sent down to the planet below in the form of giant lifting bodies which coasted through the atmosphere to a splash-glide landing in the ocean.
New London followed a slightly elliptical orbit high above the Earth, with an apogee of forty-five thousand kilometres and a perigee of forty-two thousand kilometres.
Even at perigee - er, perijove - it's much too high to be affected by atmospheric drag.
Apogee and perigee and the sidereal day and ectocraters and the ejecta hypothesis.
As F'lessan watched, the Estimated Time to Perigee ticked over to 5800.