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The apsides refer to the farthest (2) and nearest (3) points reached by an orbiting planetary body (2 and 3) with respect to a primary, or host, body (1). An apsis (from Ancient Greek ἁψίς (hapsís) 'arch, vault'; pl. apsides / ˈ æ p s ɪ ˌ d iː z / AP-sih-deez) [1] [2] is the farthest or nearest point in the orbit of a planetary body about its primary body.
The ancient Greek astronomer Hipparchus noted the apsidal precession of the Moon's orbit (as the revolution of the Moon's apogee with a period of approximately 8.85 years); [4] it is corrected for in the Antikythera Mechanism (circa 80 BCE) (with the supposed value of 8.88 years per full cycle, correct to within 0.34% of current measurements). [5]
An object with an e of between 0 and 1 will have an elliptical orbit, with, for instance, an object with an e of 0.5 having a perihelion twice as close to the Sun as its aphelion. As an object's e approaches 1, its orbit will be more and more elongated before, and at e =1, the object's orbit will be parabolic and unbound to the Solar System (i ...
The asteroid belonged to the Apollo group of near-Earth asteroids, [106] [114] and was roughly 40 days past perihelion [105] (closest approach to the Sun) and had aphelion (furthest distance from the Sun) in the asteroid belt.
The woman's "male child" is a reference to Jesus (Revelation 12:5), since he is destined to "rule all nations with a rod of iron" (Revelation 12:5). The dragon trying to devour the woman's child at the moment of his birth (Revelation 12:4) is a reference to Herod the Great's attempt to kill the infant Jesus (Matthew 2:16). Through his death and ...
Celebrate Earth Day 2024 with these inspiring sayings about honoring nature and the environment. Share famous quotes from world leaders, activists and writers.
The dates of perihelion and aphelion progres through the seasons, making one complete cycle in 22,000 to 26,000 years. This is a mechanism behind one of the many Milankovitch cycles, but represents an insufficient period to cause the ice ages which occur on a period exceeding 100 million years .
Chelsea Candelario/PureWow. 2. “I know my worth. I embrace my power. I say if I’m beautiful. I say if I’m strong. You will not determine my story.