Orbits and mechanics
升交点
Ascending node
Where the orbit crosses the equator going north.
SSO precesses so the node keeps a fixed local time.
Related terms
- Earth's shadow — The stretch where a satellite passes behind Earth and loses sunlight.
- Delta-v — The velocity change needed to alter an orbit.
- Escape velocity — The minimum speed needed to leave a body's gravity.
- Atmospheric reentry — A spacecraft coming back into the atmosphere.