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Circular orbit
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Everything about Circular Orbit totally explained

:For other meanings of the term "orbit", see orbit (disambiguation) In astrodynamics or celestial mechanics a circular orbit is an elliptic orbit with the eccentricity equal to 0. It is an example of a rotation around a fixed axis: this axis is the line through the center of mass perpendicular to the plane of motion.

Circular acceleration

Transverse acceleration (perpendicular to velocity) causes change in direction. If it's constant in magnitude and changing in direction with the velocity, we get a circular motion. For this centripetal acceleration we have » mathbf

where:
  • r, is radial distance of orbiting body from central body,
  • h, is specific angular momentum of the orbiting body,
  • mu, is standard gravitational parameter.

    Delta-v to reach a circular orbit

    Maneuvering into a large circular orbit, for example a geostationary orbit, requires a larger delta-v than an escape orbit, although the latter implies getting arbitrarily far away and having more energy than needed for the orbital speed of the circular orbit. It is also a matter of maneuvering into the orbit. See also Hohmann transfer orbit.

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