**planet size**, that is unique, showing in zero or related conditions, aka the

__imaginary__space drag.

Mars:

Mars:

Orbital velocity 86652 km/hr

Radius: 3397km

Equatorial rotation velocity 868 km/hr. therefor:

3.91 km of radius for I km of equatorial speed.

86652 : 3.91 = 22161 km.--OV-RV =0 because they oppose in direction at noon. (like on Jupiter.)

Zero velocity, OV-RV=0 at

**22 161**km

Moon Deimos orbit radius:

**23 458**km a match within 6%. so :

This is the

**5 st zero velocity**area match based on the radius of planet size / velocities in the ecliptic.

The extended rotational speed of Mars projected out ward to match the orbital speed, gives the orbit of Deimos (5)