| 释义 |
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. |