#
# TTA Barnard's Star Data File
# $Revision: 1.8 $ - $Date: 2007/08/04 08:17:45 $
# by Jimmy "Gregor" McKinney
#
# TTA concept and material originally published 
# as Spacecraft 2000 to 2100 AD
# Copyright ©1990 Stewart Cowley
# and licensed to Morrigan Press Inc.
# Used with permission

# System/Star name: Barnard's Star
# Stellar Mass: 0.17 solar masses
# Stellar Radius: 0.17 solar radii / 118320 km / 0.000790920348354385 AU
# Luminosity: 0.000441 solar luminosities
# Distance: 5.963 light-years
# Notes: 
# 
# Barnard's Star 1: I -- 0.283099099900334 mE  0.6566 rE  0.08 AU  0.015 ecc
# Barnard's Star 2: II -- 0.534091466660204 mE  0.8172 rE  0.12 AU  0.0011 ecc
# Barnard's Star 3: III -- 1.61834800759873 mE  1.0892 rE  0.152 AU  0.0037 ecc
# Barnard's Star 4: IV -- 0.294378980757908 mE  0.7733 rE  0.23 AU  0.0042 ecc


# Name: I (Barnard's Star 1)
# Notes: 
# Mass: 0.283099099900334 earth masses
# Radius: 4187.8847542 km / 0.6566 earth radii
# Semimajor Axis: 0.08 AU
# Period: 0.0548789705386985 years
# Rotation Period: Tidally locked
# Gravity: 0.656654208135445 g
# Density: 5.51345514689416 g/cm^3
# Volume: 0.283075729496 earth volumes
# Roche Limit: 10151.4326441808 km
# Hill Sphere Radius: 139933.204901935 km / 0.000935395699521501 AU
# 
"I" "Barnard's Star"
{
	Class "planet"
	Radius 4187.8847542
	Obliquity 1.077
	 
	Texture "mars.*"
	BumpMap "mars-bump.*"
	BumpHeight 3
	SpecularTexture "mars-spec.*"
	SpecularPower 0.25
	NightTexture "mars-night.*"
	Albedo 0.45
	 
	EllipticalOrbit
	{
		SemiMajorAxis 0.08
		Period 0.0548789705386985
		Eccentricity 0.015
		Inclination 5.817
	}
	 
	InfoURL "http://www.niflheim.net/tta/worlds/barnards.html#1"
}
 
Modify "I" "Barnard's Star"
{
	LunarLambert 0.4
	 
	EllipticalOrbit
	{
		AscendingNode 100
		LongOfPericenter 129.47
		MeanLongitude 104.064
	}
	 
	Atmosphere {
		Height 60
		Lower [ 0.43 0.52 0.65 ]
		Upper [ 0.26 0.47 0.84 ]
		Sky [ 0.40 0.6 1.0 ]
		Sunset [ 1.0 0.6 0.2 ]
		 
		# Celestia 1.5.0 atmosphere data
		Mie 0.0024
		MieAsymmetry -0.15
		Rayleigh [ 0.0010 0.0006 0.0003 ]
		Absorption [ 0 0 0 ]
		MieScaleHeight 20
	}
}
 

# Name: II (Barnard's Star 2)
# Notes: 
# Mass: 0.534091466660204 earth masses
# Radius: 5212.2135564 km / 0.8172 earth radii
# Semimajor Axis: 0.12 AU
# Period: 0.100818123521512 years
# Rotation Period: 15.44 hours
# Gravity: 0.799758608092021 g
# Density: 5.39533676751262 g/cm^3
# Volume: 0.545739104448 earth volumes
# Roche Limit: 12634.4056607136 km
# Hill Sphere Radius: 263020.867697698 km / 0.00175818590520568 AU
# 
"II" "Barnard's Star"
{
	Class "planet"
	Radius 5212.2135564
	Obliquity 5.36
	RotationPeriod 15.44
	 
	Texture "cloudy4.*"
	BumpMap "cloudy4-bump.*"
	BumpHeight 3
	SpecularTexture "cloudy4-spec.*"
	SpecularPower 0.25
	NightTexture "cloudy4-night.*"
	Albedo 0.42
	 
	EllipticalOrbit
	{
		SemiMajorAxis 0.12
		Period 0.100818123521512
		Eccentricity 0.0011
		Inclination 2.3
	}
	 
	InfoURL "http://www.niflheim.net/tta/worlds/barnards.html#2"
}
 
Modify "II" "Barnard's Star"
{
	LunarLambert 0.3
	 
	EllipticalOrbit
	{
		AscendingNode 19
		LongOfPericenter 69.7
		MeanLongitude 14.64
	}
	 
	Atmosphere
	{
		Height 60
		Lower [ 0.43 0.52 0.65 ]
		Upper [ 0.26 0.47 0.84 ]
		Sky [ 0.40 0.6 1.0 ]
		Sunset [ 1.0 0.6 0.2 ]
		 
		# Celestia 1.5.0 atmosphere data
		Mie 0.0024
		MieAsymmetry -0.15
		Rayleigh [ 0.0010 0.0006 0.0003 ]
		Absorption [ 0 0 0 ]
		MieScaleHeight 20
	}
}
 

# Name: III (Barnard's Star 3)
# Notes: 
# Mass: 1.61834800759873 earth masses
# Radius: 6947.0668204 km / 1.0892 earth radii
# Semimajor Axis: 0.152 AU
# Period: 0.143720953237087 years
# Rotation Period: 27.92 hours
# Gravity: 1.36413280208785 g
# Density: 6.90457596209175 g/cm^3
# Volume: 1.292179652288 earth volumes
# Roche Limit: 16839.6899726496 km
# Hill Sphere Radius: 480846.092673766 km / 0.00321425759907353 AU
# 
"III" "Barnard's Star"
{
	Class "planet"
	Radius 6947.0668204
	Obliquity -7.2
	RotationPeriod 27.92
	 
	Texture "titan.*"
	BumpMap "titan-bump.*"
	BumpHeight 3
	SpecularTexture "titan-spec.*"
	SpecularPower 0.25
	NightTexture "titan-night.*"
	Albedo 0.47
	 
	EllipticalOrbit
	{
		SemiMajorAxis 0.152
		Period 0.143720953237087
		Eccentricity 0.0037
		Inclination 4.77
	}
	 
	InfoURL "http://www.niflheim.net/tta/worlds/barnards.html#3"
}
 
Modify "III" "Barnard's Star"
{
	BumpMap "tethys.*"
	LunarLambert 0.2
	 
	EllipticalOrbit
	{
		AscendingNode 57
		LongOfPericenter 20.9
		MeanLongitude 57.3
	}
	 
	Rings
	{
		Inner 11000
		Outer 17000
		Texture "barnard3-rings.png"
	}
	 
	Atmosphere
	{
		Height 60
		Lower [ 0.43 0.52 0.65 ]
		Upper [ 0.26 0.47 0.84 ]
		Sky [ 0.40 0.6 1.0 ]
		Sunset [ 1.0 0.6 0.2 ]
		 
		# Celestia 1.5.0 atmosphere data
		Mie 0.0024
		MieAsymmetry -0.15
		Rayleigh [ 0.0010 0.0006 0.0003 ]
		Absorption [ 0 0 0 ]
		MieScaleHeight 20
	}
}
 

# Name: IV (Barnard's Star 4)
# Notes: 
# Mass: 0.294378980757908 earth masses
# Radius: 4932.2133421 km / 0.7733 earth radii
# Semimajor Axis: 0.23 AU
# Period: 0.267522206599319 years
# Rotation Period: 60.19 hours
# Gravity: 0.492278396082448 g
# Density: 3.50954454623372 g/cm^3
# Volume: 0.462427901837 earth volumes
# Roche Limit: 11955.6851412504 km
# Hill Sphere Radius: 412050.669680804 km / 0.0027543886004361 AU
# 
"IV" "Barnard's Star"
{
	Class "planet"
	Radius 4932.2133421
	Obliquity 2.114
	RotationPeriod 60.19
	 
	Texture "triton.*"
	BumpMap "triton-bump.*"
	BumpHeight 3
	SpecularTexture "triton-spec.*"
	SpecularPower 0.25
	NightTexture "triton-night.*"
	Albedo 0.406
	 
	EllipticalOrbit
	{
		SemiMajorAxis 0.23
		Period 0.267522206599319
		Eccentricity 0.0042
		Inclination 5.2
	}
	 
	InfoURL "http://www.niflheim.net/tta/worlds/barnards.html#4"
}
 
Modify "IV" "Barnard's Star"
{
	BumpMap "marsbump.*"
	LunarLambert 0.44
	 
	EllipticalOrbit
	{
		AscendingNode 32
		LongOfPericenter 63.82
		MeanLongitude 95.224
	}
	 
	Atmosphere
	{
		Height 60
		Lower [ 0.43 0.52 0.65 ]
		Upper [ 0.26 0.47 0.84 ]
		Sky [ 0.40 0.6 1.0 ]
		Sunset [ 1.0 0.6 0.2 ]
		 
		# Celestia 1.5.0 atmosphere data
		Mie 0.0024
		MieAsymmetry -0.15
		Rayleigh [ 0.0010 0.0006 0.0003 ]
		Absorption [ 0 0 0 ]
		MieScaleHeight 20
	}
}