"Hale-Bopp" "Sol" { Class "comet" Mesh "asteroid.cms" Texture "asteroid.jpg" Radius 13 EllipticalOrbit { Period 2523.4 PericenterDistance 0.914142 Eccentricity 0.995068 Inclination 89.4300 AscendingNode 282.4707 ArgOfPericenter 130.5887 MeanAnomaly 0.007 Epoch 2450520.5 } # Estimate of rotation period from here: http://www.usafa.af.mil/dfp/research/astro/papers/icqpaper.htm RotationPeriod 11.47 Albedo 0.1 }