Whipple's comet

Whipple's comet

A comet that started life with a near-circular orbit, eccentricity 0.167, period 10.3 years, and has been perturbed by Jupiter so that Żit now has an eccentricity of 0.26 and a period of 8.5 years. The comet seems to decrease in brightness by one magnitude at each return.
References in periodicals archive ?
Several instances of repetitious content appear, including two very similar discussions of Fred Whipple's comet theory.
When Brian Marsden set out in 1968 to solve lingering problems with cometary orbits, he used Fred Whipple's comet model to estimate the effect that sublimating ices would have on cometary trajectories.