Earth radius (denoted as R🜨 or R E {\displaystyle R_{E}} ) is the distance from the center of Earth to a point on or near its surface. Approximating the... 40 KB (4,265 words) - 19:10, 20 March 2024 |
Line-of-sight propagation (redirect from Effective Earth radius) Earth for calculation of line-of-sight paths from maps, when a direct visual fix cannot be made. Designs for microwave formerly used 4⁄3 Earth radius... 13 KB (1,719 words) - 18:08, 2 January 2024 |
Moon (redirect from Lunar radius) earthshine is [ Earth albedo × (Earth radius / Radius of Moon's orbit)2 ] relative to the direct solar illumination that occurs for a full moon. (Earth albedo... 255 KB (24,692 words) - 00:38, 28 April 2024 |
The term "super-Earth" is also used by astronomers to refer to planets bigger than Earth-like planets (from 0.8 to 1.2 Earth-radius), but smaller than... 61 KB (7,048 words) - 06:57, 1 April 2024 |
the average radius of Jupiter, 109 times the radius of the Earth, and 1/215th of an astronomical unit, the approximate distance between Earth and the Sun... 13 KB (1,197 words) - 18:41, 1 April 2024 |
are in LEO, with an altitude never more than about one-third of the radius of Earth (or about 2000 kilometers). The term LEO region is also used for the... 18 KB (2,090 words) - 01:01, 17 April 2024 |
The Jupiter radius or Jovian radius (RJ or RJup) has a value of 71,492 km (44,423 mi), or 11.2 Earth radii (R🜨) (one Earth radius equals 0.08921 RJ).... 5 KB (390 words) - 01:27, 22 February 2024 |
Lunar distance (redirect from Earth-Moon distance) values, such as the mass, radius, and rotation of Earth. The measurement is also useful in characterizing the lunar radius, as well as the mass of and... 40 KB (4,223 words) - 23:35, 1 April 2024 |
Schumann resonances (redirect from Earth-ionosphere cavity resonance) latitudinal changes in the Earth's magnetic field, sudden ionospheric disturbances, polar cap absorption, variation in the Earth radius of ± 11 km from equator... 55 KB (6,105 words) - 03:02, 25 April 2024 |
The Earth-centered, Earth-fixed coordinate system (acronym ECEF), also known as the geocentric coordinate system, is a cartesian spatial reference system... 9 KB (904 words) - 13:39, 7 January 2024 |
Kepler-22b (category Super-Earths in the habitable zone) naked eye. Kepler-22b's radius is roughly twice that of Earth. Its mass and surface composition are unknown. However, an Earth-like composition for the... 19 KB (1,843 words) - 13:21, 5 April 2024 |
radius or the gravitational radius is a physical parameter in the Schwarzschild solution to Einstein's field equations that corresponds to the radius... 23 KB (2,202 words) - 11:27, 3 April 2024 |
atmosphere is thin relative to the Earth's radius—especially the dense atmospheric layer at low altitudes—the Earth's gravitational acceleration as a function... 23 KB (2,418 words) - 15:14, 25 April 2024 |
Geography (redirect from Geography of the earth) compute the Earth's circumference, which was close to modern values of the Earth's circumference. His estimate of 6,339.9 km for the Earth radius was only... 91 KB (9,327 words) - 17:17, 25 April 2024 |