well earth has different radius at poles and equator .At poles it is 6357 km and at equator it is 6378km hence have a diffrence of 21 km.Basically oblateness mean to be flat at two the ends of sphere like a egg.This cause a adiitional force of gravity on satellite when they comes in top of equator.This addition force tends satellite to accelerating it to lower latitute and deaccelerating while going to highter latitue.This shape at equator is calles equitorial bulge.
Iqbal singh thakur
auther
www.allsab.com
At the poles.
Vanguard1
The moon is the earths only natural satellite
polar satallite
it carries the the satellite over the earths north and south poles
mercury oblateness is 0
The Earth's only satellite is the Moon.
The moon is the earth's only natural satellite.
The Moon.
The Moon
At the poles.
moon
new moon
The Moon
srry
Vanguard1
The moon is the earths only natural satellite