heliosynchronous

helio- +‎ synchronous

heliosynchronous (not comparable)

1. Describing an orbit around the Earth where each passage in the same direction along a given latitude will occur throughout the year at the same true solar time.

   Synonym: Sun-synchronous

   • 1987, Pierre Lellouche, Satellite warfare: a challenge for the international community, Institut français des relations internationales, United Nations Institute for Disarmament Research, United Nations:

     A heliosynchronous orbit is an orbit [around the Earth] whose plane precesses by [a little less than] one degree a day around the line of the poles, thus keeping the same position in relation to the Earth-Sun line.

2. Describing an orbit around the Sun in which the period of revolution is the same as the Sun's period of rotation.

• heliosynchronous orbit

• geostationary
• geosynchronous
• heliostationary