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I'm trying to work through some equations in the paper 'Gravitational Radiation and the Motion of Two Point Masses' (Peters, 1964) but I can't get out the right values

1. Homework Statement

1. Homework Statement

For a binary star system with each mass = 1 solar mass, the equations give the results:

Separation ~ 10 solar radii

Period ~ 4.5 days

Lifetime for decay ~ 3x10

^{12}years

## Homework Equations

T = a

^{4}/4B

B = (64/5)G

^{3}m

_{1}m

_{2}(m

_{1}+m

_{2})/c

^{5}

## The Attempt at a Solution

Using solar mass = 1.989 x 10

^{30}kg,

solar radius = 695700 km

G = 6.67408 x 10

^{-11}m

^{3}kg

^{-1}s

^{-2}

c = 3 x 10

^{8}ms

^{-1}

I get B = (1/(3 x 10

^{8})

^{5})(64/5)(6.67408 x 10

^{-11})

^{3}x 2 x 1.989 x10

^{30}x 10

^{3}= 6.229 x 10

^{-42}

T = (10 x (695700 x 1000))

^{4}/4B = ~1.12 x 10

^{51}s, which isn't at all near 3 x 10

^{12}years :( Help?

also regarding Kepler's third law. My lecture notes give it as

(G/4pi

^{2})(m

_{1}+ m

_{2}) t

^{2}=a

^{3}

where t is orbital period in years, masses are in solar units, and a is in au. This formula also isn't working for me yet?