# Question: calculating orbit using another orbit

A satellite which is moving around a planet of mass $$M$$ in a circular orbit of radius $$R$$ is given a sudden thrust into the center of the planet, so that it deviates an angle $$a$$.

Find the latus-rectum $$l$$ and the eccentricity $$e$$ of the new orbit.

• What do you mean by "into the center of the earth"? Do you mean towards the center of the earth?
– LDC3
Commented Jan 3, 2015 at 4:19
• i mean directing to the centre of the planet. Commented Jan 3, 2015 at 10:28
• This question appears to be off-topic because it is about homework. Commented Jan 3, 2015 at 12:17
• @DavidHammen AFAIK homework isn't itself off topic in Astronomy. That said, the question could probably use some rewording. Commented Jan 3, 2015 at 14:13
• Don't expect to get your homework done by others. Put some effort into it, show what you tried. Say where you stumble. Commented Jan 3, 2015 at 16:13

• I don't want to see your image. You need to learn the difference between angular momentum and (linear) momentum. Commented Jan 4, 2015 at 0:48