Hello!
When a relatively light body rotates around much heavier body, its orbit is elliptical with the heavier object at one focus of this ellipse. And the speed of a smaller object is
where is the constant of universe gravitation,
is the mass of a heavier body,
is the current distance between objects and
is the major semi-axis of the elliptic orbit.
Denote the minimal distance as and the...
Hello!
When a relatively light body rotates around much heavier body, its orbit is elliptical with the heavier object at one focus of this ellipse. And the speed of a smaller object is
where is the constant of universe gravitation,
is the mass of a heavier body,
is the current distance between objects and
is the major semi-axis of the elliptic orbit.
Denote the minimal distance as and the maximum as
Then
or
Also, at the perigee And we know
and
The final formula is
In numbers,
which is approximately
P.S. Sources give the completely different values for and
P.P.S. The main formula may be derived from the basic physical laws, see the first link.
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