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Uranus system mass/density update (and Moon LunarLambert apparently) #165

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Jan 14, 2024
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Uranus system mass/density update (and Moon LunarLambert apparently) #165

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16 changes: 16 additions & 0 deletions data/minormoons.ssc
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Original file line number Diff line number Diff line change
Expand Up @@ -4617,13 +4617,19 @@


# Minor moons of Uranus
# Masses of Cordelia, Ophelia, Cressida from French et al. (2024), arXiv:2401.04634
# "The Uranus System from Occultation Observations (1977-2006): Rings,
# Pole Direction, Gravity Field, and Masses of Cressida, Cordelia, and Ophelia"
# https://arxiv.org/abs/2401.04634

"Cordelia:Uranus VI:S 1986 U 7" "Sol/Uranus"
{
Class "minormoon"
Mesh "roughsphere.cms"
Texture "asteroid.*"
SemiAxes [ 25 18 18 ]
Mass 0.00000001018084
Density 1790
OrbitFrame
{
EclipticJ2000 { Center "Sol/Uranus" }
Expand Down Expand Up @@ -4654,6 +4660,8 @@
Mesh "roughsphere.cms"
Texture "asteroid.*"
SemiAxes [ 27 19 19 ]
Mass 0.000000005977897
Density 870
OrbitFrame
{
EclipticJ2000 { Center "Sol/Uranus" }
Expand Down Expand Up @@ -4714,6 +4722,8 @@
Mesh "roughsphere.cms"
Texture "asteroid.*"
SemiAxes [ 46 37 37 ]
Mass 0.000000030793704
Density 700
OrbitFrame
{
EclipticJ2000 { Center "Sol/Uranus" }
Expand Down Expand Up @@ -4940,13 +4950,19 @@
InfoURL "https://en.wikipedia.org/wiki/Perdita_(moon)"
}

# Mass from Jacobson (2023)
# "Update of the Orbits of the Regular Uranian Satellites and the Gravitational Field of the Uranian System"
# https://ui.adsabs.harvard.edu/abs/2023DPS....5522102J/abstract
# via French et al. (2024), arXiv:2401.04634
# https://arxiv.org/abs/2401.04634
"Puck:Uranus XV:S 1985 U 1" "Sol/Uranus"
{
Class "minormoon"
Mesh "puck.cmod"
Orientation [ -90 0 1 0 ]
Texture "puck.*"
Radius 83.5
Mass 0.0000003198259
OrbitFrame
{
EclipticJ2000 { Center "Sol/Uranus" }
Expand Down
19 changes: 12 additions & 7 deletions data/solarsys.ssc
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Expand Up @@ -275,7 +275,7 @@
# MeridianAngle 38.3213
# }

LunarLambert 0.5
LunarLambert 1
GeomAlbedo 0.136
BondAlbedo 0.11
InfoURL "https://en.wikipedia.org/wiki/Moon"
Expand Down Expand Up @@ -1167,14 +1167,19 @@ AltSurface "Limit of knowledge" "Sol/Saturn/Hyperion"
InfoURL "https://en.wikipedia.org/wiki/Phoebe_(moon)"
}

# Masses from Jacobson (2023)
# "Update of the Orbits of the Regular Uranian Satellites and the Gravitational Field of the Uranian System"
# https://ui.adsabs.harvard.edu/abs/2023DPS....5522102J/abstract
# via French et al. (2024), arXiv:2401.04634
# https://arxiv.org/abs/2401.04634
"Uranus" "Sol"
{
Class "planet"
Texture "uranus.*"
Color [ 0.86828 0.97 1.0 ]
Radius 25559
Oblateness 0.0229
Mass 14.54
Mass 14.53614488
Atmosphere
{
Height 500
Expand Down Expand Up @@ -1229,7 +1234,7 @@ AltSurface "Limit of knowledge" "Sol/Saturn/Hyperion"
# NormalMap "miranda-normal.*"
Color [ 0.98357 0.98913 1.0 ]
SemiAxes [ 240 234.2 232.9 ]
Mass 0.0000107880
Mass 0.000010537508
CustomOrbit "miranda"

# Overridden by CustomOrbit
Expand Down Expand Up @@ -1279,7 +1284,7 @@ AltSurface "Limit of knowledge" "Sol/Uranus/Miranda"
# NormalMap "ariel-normal.*"
Color [ 1.0 1.0 0.999 ]
SemiAxes [ 581.1 577.9 577.7 ]
Mass 0.0002094889
Mass 0.000206480241
CustomOrbit "ariel"

# Overridden by CustomOrbit
Expand Down Expand Up @@ -1330,7 +1335,7 @@ AltSurface "Limit of knowledge" "Sol/Uranus/Ariel"
# NormalMap "umbriel-normal.*"
Color [ 1.0 0.99769 0.99749 ]
Radius 584.7
Mass 0.0002135030
Mass 0.000215756865
CustomOrbit "umbriel"

# Overridden by CustomOrbit
Expand Down Expand Up @@ -1381,7 +1386,7 @@ AltSurface "Limit of knowledge" "Sol/Uranus/Umbriel"
# NormalMap "titania-normal.*"
Color [ 1.0 0.98945 0.97393 ]
Radius 788.4
Mass 0.00056925778
Mass 0.000578533155
CustomOrbit "titania"

# Overridden by CustomOrbit
Expand Down Expand Up @@ -1432,7 +1437,7 @@ AltSurface "Limit of knowledge" "Sol/Uranus/Titania"
# NormalMap "oberon-normal.*"
Color [ 1.0 0.98881 0.97178 ]
Radius 761.4
Mass 0.00051506665
Mass 0.000520830543
CustomOrbit "oberon"

# Overridden by CustomOrbit
Expand Down
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