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Im trying to calculate the speed of the moon at perigee but i dont know where im going wrong.

As i know the formula is v = sqrt[ GM( (2/p) - (1/a) ) ]

where

g = gravitation constant

m = mass of the earth

p = distance perigee from the earth

a = semi major axis

The values im using are

g= 6.67384e-11

m = 5.97219e+24kg

p = 363295km

a = 384399km

the result im getting is 75.5524m/s

Im not even sure if this is correct, could someone advice me in the correct method

*EDIT, showed the unit im working in. Also as a side note i pulled the data of wikipedia*

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# Speed of the moon at perigee

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