The distance of a planet from the Sun is If we stopped the planet in orbit and then let it fall straight towards the Sun, approximately how long would it take for the planet to reach the Sun in seconds?
Consider both the planet and the Sun as point masses.
The mass of the Sun is
Gravitational constant is
A satellite, moving in an elliptical orbit, is above Earth's surface at its farthest point and above at its closest point. Calculate the semimajor axis of the orbit.
The radius of Earth is
A geo-stationary satellite revolves around the earth in a circular orbit of radius Approximately what will be the time period of a satellite in an orbit of radius
A geo-stationary satellite is a satellite whose position in the sky remains the same in the view of a stationary observer on earth.
如果distance between the earth and the sun were of its present value, the approximate number of days in a year would be_______.
在一个椭圆轨道卫星。如果maximum orbital velocity of the satellite is where is the minimum orbital velocity, what is the approximate orbital eccentricity?