If the orbital period of an asteroid around the Sun is 2.8 y

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Topic: If the orbital period of an asteroid around the Sun is 2.8 y (Read 570 times)

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If the orbital period of an asteroid around the Sun is 2.8 y

« on: February 25, 2003, 10:06:00 PM »

If the orbital period of an asteroid around the Sun is 2.8 years, what is its semi-major axis in A.U.s?


« Last Edit: December 31, 1969, 04:00:00 PM by 1079251200 »	Logged

Remcook

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Re: If the orbital period of an asteroid around the Sun is 2

« Reply #1 on: February 26, 2003, 02:17:00 AM »

T = 2*pi*sqrt(a^3/GM)

that will do it. again no further time


« Last Edit: December 31, 1969, 04:00:00 PM by 1079251200 »	Logged

Remcook

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Re: If the orbital period of an asteroid around the Sun is 2

« Reply #2 on: February 26, 2003, 11:40:00 AM »

GMsun = 1.327 * 10^11 km^3/s

so: a = 2.97 * 10^8 km

1 AU =~ 150 000 000 km

a = 1.98 AU


« Last Edit: December 31, 1969, 04:00:00 PM by 1079251200 »	Logged

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