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November 23, 2014

November 23, 2014

Posted by **charlie** on Thursday, June 11, 2009 at 3:43pm.

T^2/a^3 of one planet = T^2/a^3 second planet.

But I can't do the algebra to solve for the second planet's a^3 (semimajor axis)

Would someone walk me through the steps please? Thanks.

- Physics/Maths -
**bobpursley**, Thursday, June 11, 2009 at 6:01pma2^3= (T2/t1)^2 * a1^3

where a2 is the semimajor axis of the second planet.

- Physics/Maths -
**charlie**, Friday, June 12, 2009 at 3:16amThanks

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