Orbits and mechanics
太阳同步轨道
Sun-synchronous orbit (SSO)
An orbit whose plane keeps a nearly fixed angle to the Sun.
It crosses each latitude at the same local time, so lighting is comparable.
Related terms
- Orbital inclination — The angle between the orbital plane and the equator.
- Apogee — The farthest point of an orbit from Earth.
- Perigee — The closest point of an orbit to Earth.
- Two-line element set (TLE) — A 69-character-per-line format that encodes an orbit.