Keywords: Comet 2006 VZ13 linear orbital element example.jpg Commercial sky software for amateur astronomers allows users to plot the course of comets in the sky This example was generated using Sky Map Pro and shows part of the path of Comet 2006 VZ13 LINEAR en wikipedia Common Good CommonsHelper 2007-07-12 Gn842 wikipedia en Gn842 original upload log page en wikipedia Comet_2006_VZ13_linear_orbital_element_example jpg 2007-07-12 20 06 Gn842 1024×768× 85849 bytes <nowiki>Fair use screen shot from Sky Map Pro astronomical program purchased Author of program was notified of this post on the Yahoo discussion group that he runs groups yahoo com/group/skymap I created this particular screen shot and the graphics </nowiki> Comets |