孫浩彧 wrote:
+1大概把未來調整...(恕刪)
大陸公布的datasheet
SuperView-1:
Orbit
Altitude: 500 km
Type: Sun-synchronous
目前
Perigee: 439.4 km
Apogee: 534.2 km
Sun Synchronous Orbits
These orbits allows a satellite to pass over a section of the Earth at the same time of day. Since there are 365 days in a year and 360 degrees in a circle, it means that the satellite has to shift its orbit by approximately one degree per day. These satellites orbit at an altitude between 700 to 800 km. These satellites use the fact since the Earth is not perfectly round (the Earth bulges in the center, the bulge near the equator will cause additional gravitational forces to act on the satellite. This causes the satellite's orbit to either proceed or recede. These orbits are used for satellites that need a constant amount of sunlight. Satellites that take pictures of the Earth would work best with bright sunlight, while satellites that measure longwave radiation would work best in complete darkness.
