Molniya orbit

短语

[网络] 闪电轨道；闪电型轨道；莫尼亚轨道

词形变化

Molniya orbits 复数 Molniya orbits

别名

Molniya

释义与例句

n.
  1. 1.

    A highly elliptical orbit with an eccentricity of 0.74, inclination of 63.4 degrees, an argument of perigee of −90 degrees, and an orbital period of half a sidereal day, around the Earth.

  2. 2.

    By analogy, the equivalent orbit for the southern hemisphere, with the argument of perigee changed to +90 degrees.

  3. 3.

    Both the northern and southern hemisphere orbits for the Earth.

    引申义
  4. 4.

    By analogy, equivalent orbits for other bodies, which provide low apparent motion across the dome of the sky at apoapsis, allowing long duration communications/observation with low tracking rates at polar latitudes.

  5. 5.

    The orbits around Earth and other bodies with these qualities.

    引申义

词源

From Russian мо́лния (mólnija, “lightning”) + orbit. The Russian word was used as the name for a series of Soviet/Russian communications satellites, and the orbits which they were placed in.

来源：wiktionary