# A pair of Zubrin solettas to help terraform Mars "MarsMirrors" "Sol" { Mesh "empty.3ds" # An invisible placeholder ... Color [ 0 0 0 ] # CustomOrbit "vsop87-mars" # ... at the centre of Mars ... Obliquity 1.8506 # ... with its equator EquatorAscendingNode 49.479 # parallel to Mars' orbit Radius 75 # "Large" enough and "bright" enough to Albedo 1.0 # prevent Celestia turning off its satellites } "#" "Sol/MarsMirrors" { Mesh "empty.3ds" # Another invisible placeholder Color [ 0 0 0 ] # EllipticalOrbit # Its "orbit" is a scale { # model of Mars' orbit around Period 686.980 # the sun, lying in the same SemiMajorAxis 214000 # plane as Mars' orbit, orientated Eccentricity 0.0934 # the same way, and with the LongOfPericenter 286.562 # same period MeanLongitude 305.974 # So it stays precisely opposite the sun } Obliquity 90 # On its side, with its EquatorAscendingNode 40.521 # pole aimed at Mars (90 - 49.479), and PrecessionRate 0.524032722 # precessing to maintain that orientation Radius 75 # "Large" enough and "bright" enough Albedo 1.0 # to prevent Celestia turning off its satellites } "NorthMirror" "Sol/MarsMirrors/#" { Mesh "mirror.3ds" Radius 62.5 # 125km wide Oblateness 0.999999 # flat disc EllipticalOrbit { Period 1e12 # Essentially fixed in position, SemiMajorAxis 3392.3 # just under one Mars radius MeanLongitude 90 # to the north of Mars-Sun line } Obliquity 0.91 # Tilted to illuminate EquatorAscendingNode 180 # Mars' south polar region RotationPeriod 13.8 # Spin-stabilized, ~0.0001g at rim Albedo 1.0 # Bright as possible } "SouthMirror" "Sol/MarsMirrors/#" { Mesh "mirror.3ds" Radius 62.5 # 125km wide Oblateness 0.999999 # flat disc EllipticalOrbit { Period 1e12 # Essentially fixed in position SemiMajorAxis 3392.3 # just under one Mars radius MeanLongitude 270 # to the south of Mars-Sun line } Obliquity 0.91 # Tilted to illuminate EquatorAscendingNode 0 # Mars' north polar region RotationPeriod 13.8 # Spin-stabilized, ~0.0001g at rim Albedo 1.0 # Bright as possible }