one year.

Circular orbits

In the Schwarzschild metric, free-falling objects can be in circular orbits if the orbital radius is larger than (the radius of the photon sphere). The formula for a clock at rest is given above; the formula below gives the general relativistic time dilation for a clock in a circular orbit:

Both dilations are shown in the figure below.

Important features of gravitational time dilation

* According to the general theory of relativity,

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