### Help: Angular velocity, and "rendez-vous" formula?

Posted:

**04.04.2012, 08:41**I suppose it should be a simple thing, but i can't solve it....

Suppose i'm on the equator of a planet which have a day of X hours.

From there i see a satellite raising each Y hours.

What's the formula to find the satellite orbital period?

- I'm thinking to a simplified, theoretical system, we can think at the satellite orbit as a perfectly circular, equatorial orbit, ecc...

- found that formula, i should put Y<0 for satellites with a period longer than X, right?

Suppose i'm on the equator of a planet which have a day of X hours.

From there i see a satellite raising each Y hours.

What's the formula to find the satellite orbital period?

- I'm thinking to a simplified, theoretical system, we can think at the satellite orbit as a perfectly circular, equatorial orbit, ecc...

- found that formula, i should put Y<0 for satellites with a period longer than X, right?