Lunar Perigee and Apogee - timeanddate.com
网页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.
近地点 - 维基百科，自由的百科全书
网页近地点（Perigee）是一个天文学上的用语，用来指地球 卫星在绕地飞行时与地球最近的距离。 地球卫星包括 月球 以及为数众多的 人造卫星 。 根据 天文物理学 和 数学 原理，卫星在绕主星運行时的轨道是一个 椭圆 。
Apsis - Wikipedia
网页The suffix for Earth is -gee, so the apsides' names are apogee and perigee. For the Sun, the suffix is -helion, so the names are aphelion and perihelion. According to Newton's laws of motion, all periodic orbits are ellipses.
What Are Perigee and Apogee? When Are Perigee and Apogee?
网页What is Perigee and Apogee? A simple definition: The point at which it is nearest Earth each month is called its perigee (this varies throughout the year). The point at which the Moon is farthest from Earth each month is called its apogee (this varies throughout the year as well).
Argument of periapsis - Wikipedia
网页The argument of periapsis (also called argument of perifocus or argument of pericenter), symbolized as ω (omega), is one of the orbital elements of an orbiting body. Parametrically, ω is the angle from the body's ascending node to …
Hohmann transfer orbit - Wikipedia
网页In astronautics, the Hohmann transfer orbit (/ ˈhoʊmən /) is an orbital maneuver used to transfer a spacecraft between two orbits of different altitudes around a central body. For example, a Hohmann transfer could be used to raise a satellite's orbit from low Earth orbit to geostationary orbit.
The Art of Non-Conformity: Set Your Own Rules, Live the Life …
网页2010年9月7日 · If you've ever thought, "There must be more to life than this," The Art of Non-Conformity is for you. Based on Chris Guillebeau's popular online manifesto "A Brief Guide to World Domination," The Art of Non-Conformity defies common assumptions about life and work while arming you with the tools to live differently.
Project Spacetime | Undertale AU Wiki | Fandom
网页Project Spacetime, or PS!Outertale for short, is a take on Outertale by Mimi Pippinski (2mi127). It is set on a space station (the Outpost) which the monsters were banished to after their home planet was destroyed. On January 26th, 2022, the first official demo containing the Outlands was...
Non-Hohmann Transfers with a Common Apse Line
网页For orbital transfers that do not take place on the apse line, we have to account for the change in direction of the velocity vector in addition to the change of magnitude. The difference in length of the velocity vectors is the change in speed and the change of flight path angle is the change of direction of the vector.
Moon Fact Sheet - NSSDCA
网页2024年1月11日 · Mean values at opposition from Earth Distance from Earth (equator, km) 378,000 Apparent diameter (seconds of arc) 1896 Apparent visual magnitude -12.74 * These represent mean apogee and perigee for the lunar orbit, and were used for calculating the maximum and minimum velocities.
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