View example sentences, synonyms and word forms for Perigee.
Perigee
Perigee meaning
The point, in an orbit about the Earth, that is closest to the Earth: the periapsis of an Earth orbiter. | The point, in an orbit about any planet, that is closest to the planet: the periapsis of any satellite. | The point, in any trajectory of an object in space, where it is closest to the Earth.
Synonyms of Perigee
Example sentences (14)
As the moon orbits the Earth it moves nearer and further away from the planet, sometimes being 30,000 miles closer to us at its closest passing - or perigee, as it's known.
Hence, the final disposal orbit must meet specific criteria on the minimum raise in perigee altitude depending on the object's reflectivity, mass, shape, and size.
It also qualifies as a Supermoon, which refers to a full moon that is 90 percent or closer to perigee—the point nearest Earth reached by the Moon in its orbit.
The harvest supermoon rising over Dorchester Full supermoons occur when the orbit of the moon is at its closest point to the Earth in its orbit which is also known as its lunar perigee, giving the Moon a bigger and brighter appearance in the sky.
A second maneuver followed three hours later that raised its low point, or perigee, by 50 kilometers, he said.
A supermoon occurs when the moon reaches its closest position to the Earth, known as the perigee, making the satellite appear bigger and brighter than usual.
Perigee needed a location free of such constraints, he said, because it wants to eventually launch up to 40 times a year.
According to NASA, a supermoon occurs when there is a full moon at or near the point where the moon reaches perigee (the closest point in its orbit around the Earth).
Peter Davidson is the author or co-author of twenty-nine books including fiction, non-fiction, college textbooks, and children’s books published by McGraw-Hill Book Company, Perigee/Putnam Publishers, Sweet Memories Publishing, Haworth Press, and others.
An anomalistic month is longer than a sidereal month because the perigee moves in the same direction as the Moon is orbiting the Earth, one revolution in nine years.
Full moon cycle The full moon cycle is the time for the Sun (as seen from the Earth) to complete one revolution with respect to the perigee of the Moon's orbit.
The orbit's perigee and apogee had been selected to cause reentry due to orbital decay within 10 days (the limit of the life support system function) in the event of retrorocket malfunction.
The resultant slowing of the Shuttle lowered its orbital perigee down into the upper atmosphere.
This gives a maximum perceived increase of 14% between apogee and perigee moons of the same phase.