From 2e76c7f65ddae0646c7133e4cc5d2a3cc84a2f50 Mon Sep 17 00:00:00 2001 From: AstroChara Date: Thu, 28 Dec 2023 21:12:27 +0700 Subject: [PATCH 1/6] Satellite orbit and rotation, phase 1 (W.I.P) This commit updates: - Eris: Secondary orbit - Orcus: Mutual orbit - Salacia: Secondary orbit - G!kun: Secondary orbit and primary orientation (assume edge on rotation during occultation). Tidally-locked objects are now oriented so that their meridian points at object they are locked to. --- data/dwarfplanets.ssc | 62 ++++++++++++++++++++++------------ data/outersys.ssc | 77 +++++++++++++++++++++++++++++-------------- 2 files changed, 93 insertions(+), 46 deletions(-) diff --git a/data/dwarfplanets.ssc b/data/dwarfplanets.ssc index 30e13221..cc161ff3 100644 --- a/data/dwarfplanets.ssc +++ b/data/dwarfplanets.ssc @@ -466,7 +466,7 @@ ReferencePoint "Pluto-Charon" "Sol" InfoURL "https://en.wikipedia.org/wiki/S/2015_(136472)_1" } -# System mass from Holler et al. (2021), Icarus 355, 114130 +# System mass and orbit from Holler et al. (2021), Icarus 355, 114130 # "The Eris/Dysnomia system I: The orbit of Dysnomia" # https://ui.adsabs.harvard.edu/abs/2021Icar..35514130H/abstract # Mass ratio from Brown and Butler (2023), Planet. Sci. J. 4, 193 @@ -531,9 +531,9 @@ ReferencePoint "Pluto-Charon" "Sol" SemiMajorAxis 37273 Eccentricity 0.0062 Inclination 45.49 + MeanLongitude 125.78 AscendingNode 126.17 - ArgOfPericenter 180.83 - MeanAnomaly 178.78 + LongOfPericenter 307 } BodyFrame { EquatorJ2000 {} } UniformRotation @@ -704,25 +704,34 @@ ReferencePoint "Orcus-Vanth" "Sol" } EllipticalOrbit { - Epoch 2454000.0 # 2006 Sept 21 12:00 - Period 9.3072 - SemiMajorAxis 940 - Eccentricity 0.021 - Inclination 100.2 - AscendingNode 87.2 - ArgOfPericenter 305.6 - MeanAnomaly 321.4 + Epoch 2454000 # 2006 Sept 21 12:00 + Period 9.539154 + SemiMajorAxis 1241.4 # semi-major axis: 8999.8 km, mass ratio: 0.16 +/- 0.02 + Eccentricity 0.00091 + Inclination 105.03 + MeanLongitude 8.52 + AscendingNode 53.49 + LongOfPericenter 148 + } + BodyFrame + { + EquatorJ2000 { Center "Sol/Orcus-Vanth" } } UniformRotation # to match mutual orbit { - Inclination 98.2 - AscendingNode 83.3 + Epoch 2454000 # 2006 Sept 21 12:00 + Inclination 105.03 + AscendingNode 53.49 + MeridianAngle 135.03 } LunarLambert 0.5 GeomAlbedo 0.231 InfoURL "https://en.wikipedia.org/wiki/90482_Orcus" } +# Orbit from Grundy et al. (2019), Icarus 334, 62-78 +# "Mutual orbit orientations of transneptunian binaries" +# https://ui.adsabs.harvard.edu/abs/2019Icar..334...62G/abstract "Vanth:Orcus I:90482 Orcus I:S 2005 (90482) 1" "Sol/Orcus" { Class "moon" @@ -737,14 +746,25 @@ ReferencePoint "Orcus-Vanth" "Sol" } EllipticalOrbit { - Epoch 2454000.0 # 2006 Sept 21 12:00 - Period 9.3072 - SemiMajorAxis 8175 - Eccentricity 0.021 - Inclination 100.2 - AscendingNode 87.2 - ArgOfPericenter 125.6 - MeanAnomaly 321.4 + Epoch 2454000 # 2006 Sept 21 12:00 + Period 9.539154 + SemiMajorAxis 7758.4 # semi-major axis: 8999.8 km, mass ratio: 0.16 +/- 0.02 + Eccentricity 0.00091 + Inclination 105.03 + MeanLongitude 188.52 + AscendingNode 53.49 + LongOfPericenter 328 + } + BodyFrame + { + EquatorJ2000 { Center "Sol/Orcus-Vanth" } + } + UniformRotation # to match mutual orbit + { + Epoch 2454000 # 2006 Sept 21 12:00 + Inclination 105.03 + AscendingNode 53.49 + MeridianAngle 315.03 } LunarLambert 0.5 GeomAlbedo 0.08 diff --git a/data/outersys.ssc b/data/outersys.ssc index 202fdc0a..6564b3d1 100644 --- a/data/outersys.ssc +++ b/data/outersys.ssc @@ -318,6 +318,9 @@ ReferencePoint "Lempo-Hiisi" "Sol" Clickable true } +# Orbits of companions from Benecchi et al. (2010), Icarus 207 (2), p. 978-991 +# "(47171) 1999 TC 36, A transneptunian triple" +# https://ui.adsabs.harvard.edu/abs/2010Icar..207..978B/abstract "47171 Lempo:Lempo:1999 TC36:1999 TC36 A1" "Sol" { Class "asteroid" @@ -462,8 +465,12 @@ ReferencePoint "Lempo-Hiisi" "Sol" InfoURL "https://en.wikipedia.org/wiki/(55565)_2002_AW197" } -# Sizes from Grundy et al. (2019), Icarus 334, 62 +# Sizes and Actaea's orbit from Grundy et al. (2019), Icarus 334, 62-78 # "Mutual orbit orientations of transneptunian binaries" +# https://ui.adsabs.harvard.edu/abs/2019Icar..334...62G/abstract +# Rotation period from Thirouin et al. (2014), A&A 569, A3 +# "Rotational properties of the binary and non-binary populations in the trans-Neptunian belt" +# https://ui.adsabs.harvard.edu/abs/2014A%26A...569A...3T/abstract # Geometric albedo from Brown and Butler (2017), AJ 154, no. 1, 19 # "The Density of Mid-sized Kuiper Belt Objects from ALMA Thermal Observations" # https://ui.adsabs.harvard.edu/abs/2017AJ....154...19B/abstract @@ -485,11 +492,12 @@ ReferencePoint "Lempo-Hiisi" "Sol" ArgOfPericenter 310.976065097087 MeanAnomaly 122.990298098042 } + BodyFrame { EquatorJ2000 {} } UniformRotation # assume coplanarity with satellite orbit { Period 6.5 - Inclination 18.0 - AscendingNode 110.4 + Inclination 23.59 + AscendingNode 45.2 } LunarLambert 0.5 GeomAlbedo 0.042 @@ -510,14 +518,22 @@ ReferencePoint "Lempo-Hiisi" "Sol" } EllipticalOrbit { - Epoch 2454300.0 # 2007 Jul 18 12:00 - Period 5.4938 - SemiMajorAxis 5709 - Eccentricity 0.005 - Inclination 23.7 - AscendingNode 46.1 - ArgOfPericenter 43.2 - MeanAnomaly 214.5 + Epoch 2454300 # 2007 Jul 18 12:00 UT + Period 5.493882 + SemiMajorAxis 5724 + Eccentricity 0.0098 + Inclination 23.59 + MeanLongitude 303.76 + AscendingNode 45.2 + LongOfPericenter 134 + } + BodyFrame { EquatorJ2000 {} } + UniformRotation # to match mutual orbit + { + Epoch 2454300 # 2007 Jul 18 12:00 UT + Inclination 23.59 + AscendingNode 45.2 + MeridianAngle 78.56 } LunarLambert 0.5 GeomAlbedo 0.042 # assume same albedo as primary @@ -530,7 +546,7 @@ ReferencePoint "Lempo-Hiisi" "Sol" # Colors from Grundy et al. (2015), Icarus 257, p. 130-138 # "The mutual orbit, mass, and density of the large transneptunian binary system Varda and Ilmarë" # https://ui.adsabs.harvard.edu/abs/2015Icar..257..130G/abstract -ReferencePoint "Varda-Ilmare" "Sol" +ReferencePoint "Varda-Ilmar\u00EB" "Sol" { EllipticalOrbit { @@ -558,7 +574,7 @@ ReferencePoint "Varda-Ilmare" "Sol" Oblateness 0.043 OrbitFrame { - EquatorJ2000 { Center "Sol/Varda-Ilmare" } + EquatorJ2000 { Center "Sol/Varda-Ilmar\u00EB" } } EllipticalOrbit { @@ -582,7 +598,7 @@ ReferencePoint "Varda-Ilmare" "Sol" InfoURL "https://en.wikipedia.org/wiki/174567_Varda" } -"Ilmare:174567 Varda I:Varda I:S 2009 (174567) 1" "Sol/Varda" +"Ilmar\u00EB:174567 Varda I:Varda I:S 2009 (174567) 1" "Sol/Varda" { Class "asteroid" Mesh "roughsphere.cms" @@ -614,7 +630,9 @@ ReferencePoint "Varda-Ilmare" "Sol" # "Stellar Occultations by Transneptunian objects: from Predictions to Observations # and Prospects for the Future" # https://arxiv.org/abs/1905.04335 -# Secondary size calculated from radius ratio in Grundy et al. (2019), Icarus 334, 30 +# Orientation from Benedetti-Rossi et al. (2016), AJ 152 (6), 156 +# "Results from the 2014 November 15th Multi-chord Stellar Occultation by the TNO (229762) 2007 UK126" +# https://ui.adsabs.harvard.edu/abs/2016AJ....152..156B/abstract "229762 G!kun||'homdima:G!kun||'homdima:2007 UK126" "Sol" { Class "asteroid" @@ -633,15 +651,21 @@ ReferencePoint "Varda-Ilmare" "Sol" ArgOfPericenter 346.87585252865 MeanAnomaly 344.208559857227 } + BodyFrame { EquatorJ2000 {} } UniformRotation { Period 11.05 + Inclination 133.9981188 + AscendingNode 247.8337901 } LunarLambert 0.5 GeomAlbedo 0.142 InfoURL "https://en.wikipedia.org/wiki/229762_G%C7%83k%C3%BAn%C7%81%CA%BCh%C3%B2md%C3%ADm%C3%A0" } +# Orbit and radius ratio from Grundy et al. (2019), Icarus 334, p. 30-38 +# "The mutual orbit, mass, and density of transneptunian binary Gǃkúnǁ'hòmdímà (229762 2007 UK126)" +# https://ui.adsabs.harvard.edu/abs/2019Icar..334...30G/abstract "G!o'e !Hu:229762 G!kun||'homdima I:G!kun||'homdima I:S 2008 (229762) 1" "Sol/G!kun||'homdima" { Class "minormoon" @@ -656,19 +680,22 @@ ReferencePoint "Varda-Ilmare" "Sol" } EllipticalOrbit { - Epoch 2457000.0 # 2014 Dec 08 12:00 - Period 11.3147 - SemiMajorAxis 6012 - Eccentricity 0.025 - Inclination 43.7 - AscendingNode 110.9 - ArgOfPericenter 340.4 - MeanAnomaly 252.9 + Epoch 2457000 # 2014 Dec 8 12:00 UT + Period 11.31473 + SemiMajorAxis 6035 + Eccentricity 0.0236 + Inclination 43.75 + MeanLongitude 344.0 + AscendingNode 110.6 + LongOfPericenter 91 } + BodyFrame { EquatorJ2000 {} } UniformRotation # to match orbit plane { - Inclination 55.6 - AscendingNode 128.5 + Epoch 2457000 # 2014 Dec 8 12:00 UT + Inclination 43.75 + AscendingNode 110.6 + MeridianAngle 53.4 } LunarLambert 0.5 GeomAlbedo 0.142 # assume equal albedo as primary From a29496f17bd0e8c6b1498707dba50c69bb592dec Mon Sep 17 00:00:00 2001 From: AstroChara Date: Thu, 28 Dec 2023 22:16:17 +0700 Subject: [PATCH 2/6] Lempo system update + pedroJ fixes MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Lempo system now has Lempo System barycenter, which Lempo-Hiisi and Paha both orbit. The three objects also have masses now. Fixes: - Updated link for Grundy et al. (2019) "Mutual orbit orientations of transneptunian binaries" - Ilmarë is now directly written as such in the files. - Fixed G!kun's orientation having way too much precision. --- data/dwarfplanets.ssc | 2 +- data/outersys.ssc | 76 ++++++++++++++++++++++++++++++------------- 2 files changed, 55 insertions(+), 23 deletions(-) diff --git a/data/dwarfplanets.ssc b/data/dwarfplanets.ssc index cc161ff3..2abf148f 100644 --- a/data/dwarfplanets.ssc +++ b/data/dwarfplanets.ssc @@ -731,7 +731,7 @@ ReferencePoint "Orcus-Vanth" "Sol" # Orbit from Grundy et al. (2019), Icarus 334, 62-78 # "Mutual orbit orientations of transneptunian binaries" -# https://ui.adsabs.harvard.edu/abs/2019Icar..334...62G/abstract +# http://www2.lowell.edu/users/grundy/abstracts/2019.TNB_orbits.html "Vanth:Orcus I:90482 Orcus I:S 2005 (90482) 1" "Sol/Orcus" { Class "moon" diff --git a/data/outersys.ssc b/data/outersys.ssc index 6564b3d1..1f67e569 100644 --- a/data/outersys.ssc +++ b/data/outersys.ssc @@ -300,7 +300,7 @@ ReferencePoint "Huya System" "Sol" # "TNOs are cool: A survey of the trans-Neptunian region. V. # Physical characterization of 18 Plutinos using Herschel-PACS observations" # https://ui.adsabs.harvard.edu/abs/2012A%26A...541A..93M/abstract -ReferencePoint "Lempo-Hiisi" "Sol" +ReferencePoint "Lempo System" "Sol" { EllipticalOrbit { @@ -318,9 +318,34 @@ ReferencePoint "Lempo-Hiisi" "Sol" Clickable true } +ReferencePoint "Lempo-Hiisi" "Sol" +{ + OrbitFrame + { + EquatorJ2000 { Center "Sol/Lempo System" } + } + EllipticalOrbit + { + Epoch 2453880 # 2006 May 24 12:00 UT + Period 50.302 + SemiMajorAxis 445.8 + Eccentricity 0.2949 + Inclination 79.3 + MeanLongitude 101.1 + AscendingNode 325.2 + LongOfPericenter 112.1 + } + # Make the orbit and label visible + Visible true + Clickable true +} + # Orbits of companions from Benecchi et al. (2010), Icarus 207 (2), p. 978-991 # "(47171) 1999 TC 36, A transneptunian triple" # https://ui.adsabs.harvard.edu/abs/2010Icar..207..978B/abstract +# Masses and radii from Correia (2018), Icarus 305, p. 250-261 +# "Chaotic dynamics in the (47171) Lempo triple system" +# https://ui.adsabs.harvard.edu/abs/2018Icar..305..250C/abstract "47171 Lempo:Lempo:1999 TC36:1999 TC36 A1" "Sol" { Class "asteroid" @@ -328,21 +353,22 @@ ReferencePoint "Lempo-Hiisi" "Sol" Texture "asteroid.*" Color [ 0.454 0.416 0.365 ] # assume equal albedo BlendTexture true - Radius 136 + Radius 136.0 + Mass 0.0000011235767 OrbitFrame { EquatorJ2000 { Center "Sol/Lempo-Hiisi" } } EllipticalOrbit { - Epoch 2453880.0 # 2006 May 24 12:00 + Epoch 2453880 # 2006 May 24 12:00 UT Period 1.9068 - SemiMajorAxis 382 + SemiMajorAxis 381.5 Eccentricity 0.101 Inclination 88.9 + MeanLongitude 4.4 AscendingNode 330.0 - ArgOfPericenter 257.7 - MeanAnomaly 136.7 + LongOfPericenter 227.7 } BodyFrame { @@ -350,9 +376,10 @@ ReferencePoint "Lempo-Hiisi" "Sol" } UniformRotation { - Period 45.7632 + Epoch 2453880 # 2006 May 24 12:00 UT Inclination 88.9 AscendingNode 330.0 + MeridianAngle 214.4 } LunarLambert 0.5 GeomAlbedo 0.079 # assume equal albedo @@ -367,20 +394,21 @@ ReferencePoint "Lempo-Hiisi" "Sol" Color [ 0.454 0.416 0.365 ] # assume equal albedo BlendTexture true Radius 125.5 + Mass 0.00000088295378 OrbitFrame { EquatorJ2000 { Center "Sol/Lempo-Hiisi" } } EllipticalOrbit { - Epoch 2453880.0 # 2006 May 24 12:00 + Epoch 2453880 # 2006 May 24 12:00 UT Period 1.9068 - SemiMajorAxis 485 + SemiMajorAxis 485.5 Eccentricity 0.101 Inclination 88.9 + MeanLongitude 184.4 AscendingNode 330.0 - ArgOfPericenter 77.7 - MeanAnomaly 136.7 + LongOfPericenter 47.7 } BodyFrame { @@ -388,9 +416,10 @@ ReferencePoint "Lempo-Hiisi" "Sol" } UniformRotation { - Period 45.7632 + Epoch 2453880 # 2006 May 24 12:00 UT Inclination 88.9 AscendingNode 330.0 + MeridianAngle 34.4 } LunarLambert 0.5 GeomAlbedo 0.079 # assume equal albedo @@ -404,30 +433,33 @@ ReferencePoint "Lempo-Hiisi" "Sol" Texture "asteroid.*" Color [ 0.454 0.416 0.365 ] # assume equal albedo BlendTexture true - Radius 66 + Radius 66.0 + Mass 0.0000001284327 OrbitFrame { - EquatorJ2000 { Center "Sol/Lempo-Hiisi" } + EquatorJ2000 { Center "Sol/Lempo System" } } EllipticalOrbit { - Epoch 2453880.0 # 2006 May 24 12:00 + Epoch 2453880 # 2006 May 24 12:00 UT Period 50.302 - SemiMajorAxis 7411 + SemiMajorAxis 6965.2 Eccentricity 0.2949 Inclination 79.3 + MeanLongitude 281.1 AscendingNode 325.2 - ArgOfPericenter 326.9 - MeanAnomaly 349.0 + LongOfPericenter 292.1 } BodyFrame { - EquatorJ2000 { Center "Sol/Lempo-Hiisi" } + EquatorJ2000 { Center "Sol/Lempo System" } } UniformRotation { + Epoch 2453880 # 2006 May 24 12:00 UT Inclination 79.3 AscendingNode 325.2 + MeridianAngle 135.9 } LunarLambert 0.5 GeomAlbedo 0.079 # assume equal albedo @@ -467,7 +499,7 @@ ReferencePoint "Lempo-Hiisi" "Sol" # Sizes and Actaea's orbit from Grundy et al. (2019), Icarus 334, 62-78 # "Mutual orbit orientations of transneptunian binaries" -# https://ui.adsabs.harvard.edu/abs/2019Icar..334...62G/abstract +# http://www2.lowell.edu/users/grundy/abstracts/2019.TNB_orbits.html # Rotation period from Thirouin et al. (2014), A&A 569, A3 # "Rotational properties of the binary and non-binary populations in the trans-Neptunian belt" # https://ui.adsabs.harvard.edu/abs/2014A%26A...569A...3T/abstract @@ -655,8 +687,8 @@ ReferencePoint "Varda-Ilmar\u00EB" "Sol" UniformRotation { Period 11.05 - Inclination 133.9981188 - AscendingNode 247.8337901 + Inclination 134 + AscendingNode 248 } LunarLambert 0.5 GeomAlbedo 0.142 From 9f26d7d75ed5f02cf25eaac165cdf21f24d35644 Mon Sep 17 00:00:00 2001 From: AstroChara Date: Fri, 29 Dec 2023 09:46:43 +0700 Subject: [PATCH 3/6] Gonggong I, G!kun orientation - Updated Xiangliu's orbital formatting. - G!kun now rotates in approximately the same plane as its moon, although the sizes have not been adjusted for this. - Removed mass of the Lempo system as they are not derived from direct measurements. --- data/dwarfplanets.ssc | 6 +++--- data/outersys.ssc | 15 ++++++--------- 2 files changed, 9 insertions(+), 12 deletions(-) diff --git a/data/dwarfplanets.ssc b/data/dwarfplanets.ssc index 2abf148f..7b820df4 100644 --- a/data/dwarfplanets.ssc +++ b/data/dwarfplanets.ssc @@ -773,7 +773,7 @@ ReferencePoint "Orcus-Vanth" "Sol" # Kiss et al. (2019), Icarus 334, 3 # "The mass and density of the dwarf planet (225088) 2007 OR10" -# https://arxiv.org/abs/1903.05439 +# https://ui.adsabs.harvard.edu/abs/2019Icar..334....3K/abstract # Color indices from Boehnhardt et al. (2014), EMP 114 (1-2), 35 # "Photometry of Transneptunian Objects for the Herschel Key Program 'TNOs are Cool'" "Gonggong:225088 Gonggong:2007 OR10" "Sol" @@ -830,9 +830,9 @@ ReferencePoint "Orcus-Vanth" "Sol" SemiMajorAxis 24021 Eccentricity 0.2908 Inclination 83.08 + MeanLongitude 205.57 AscendingNode 31.99 - ArgOfPericenter 77.06 - MeanAnomaly 96.52 + LongOfPericenter 109.05 } LunarLambert 0.5 GeomAlbedo 0.08 diff --git a/data/outersys.ssc b/data/outersys.ssc index 1f67e569..05f742d7 100644 --- a/data/outersys.ssc +++ b/data/outersys.ssc @@ -354,7 +354,6 @@ ReferencePoint "Lempo-Hiisi" "Sol" Color [ 0.454 0.416 0.365 ] # assume equal albedo BlendTexture true Radius 136.0 - Mass 0.0000011235767 OrbitFrame { EquatorJ2000 { Center "Sol/Lempo-Hiisi" } @@ -394,7 +393,6 @@ ReferencePoint "Lempo-Hiisi" "Sol" Color [ 0.454 0.416 0.365 ] # assume equal albedo BlendTexture true Radius 125.5 - Mass 0.00000088295378 OrbitFrame { EquatorJ2000 { Center "Sol/Lempo-Hiisi" } @@ -434,7 +432,6 @@ ReferencePoint "Lempo-Hiisi" "Sol" Color [ 0.454 0.416 0.365 ] # assume equal albedo BlendTexture true Radius 66.0 - Mass 0.0000001284327 OrbitFrame { EquatorJ2000 { Center "Sol/Lempo System" } @@ -578,7 +575,7 @@ ReferencePoint "Lempo-Hiisi" "Sol" # Colors from Grundy et al. (2015), Icarus 257, p. 130-138 # "The mutual orbit, mass, and density of the large transneptunian binary system Varda and Ilmarë" # https://ui.adsabs.harvard.edu/abs/2015Icar..257..130G/abstract -ReferencePoint "Varda-Ilmar\u00EB" "Sol" +ReferencePoint "Varda-Ilmarë" "Sol" { EllipticalOrbit { @@ -606,7 +603,7 @@ ReferencePoint "Varda-Ilmar\u00EB" "Sol" Oblateness 0.043 OrbitFrame { - EquatorJ2000 { Center "Sol/Varda-Ilmar\u00EB" } + EquatorJ2000 { Center "Sol/Varda-Ilmarë" } } EllipticalOrbit { @@ -630,7 +627,7 @@ ReferencePoint "Varda-Ilmar\u00EB" "Sol" InfoURL "https://en.wikipedia.org/wiki/174567_Varda" } -"Ilmar\u00EB:174567 Varda I:Varda I:S 2009 (174567) 1" "Sol/Varda" +"Ilmarë:174567 Varda I:Varda I:S 2009 (174567) 1" "Sol/Varda" { Class "asteroid" Mesh "roughsphere.cms" @@ -684,11 +681,11 @@ ReferencePoint "Varda-Ilmar\u00EB" "Sol" MeanAnomaly 344.208559857227 } BodyFrame { EquatorJ2000 {} } - UniformRotation + UniformRotation # approximately coplanar with satellite { Period 11.05 - Inclination 134 - AscendingNode 248 + Inclination 54 + AscendingNode 109 } LunarLambert 0.5 GeomAlbedo 0.142 From 816c4d2988abaf81bfeba65db7c0e0c0d9967d67 Mon Sep 17 00:00:00 2001 From: AstroChara Date: Fri, 29 Dec 2023 11:16:14 +0700 Subject: [PATCH 4/6] Haumea system update Incorporating n3's update. --- data/dwarfplanets.ssc | 60 ++++++++++++++++++++++++++----------------- data/outersys.ssc | 4 +-- 2 files changed, 39 insertions(+), 25 deletions(-) diff --git a/data/dwarfplanets.ssc b/data/dwarfplanets.ssc index 7b820df4..fb3350d0 100644 --- a/data/dwarfplanets.ssc +++ b/data/dwarfplanets.ssc @@ -312,6 +312,9 @@ ReferencePoint "Pluto-Charon" "Sol" # Masses from Ragozzine and Brown (2009), AJ 137, 4766 # "Orbits and Masses of the Satellites of the Dwarf Planet Haumea (2003 EL61)" # https://ui.adsabs.harvard.edu/abs/2009AJ....137.4766R/abstract +# Secondaries' orbits from Gourgeot et al. (2016), A&A 593, A19 +# "Near-infrared spatially resolved spectroscopy of (136108) Haumea's multiple system" +# https://ui.adsabs.harvard.edu/abs/2016A%26A...593A..19G "Haumea:136108 Haumea:2003 EL61" "Sol" { Class "dwarfplanet" @@ -357,56 +360,67 @@ ReferencePoint "Pluto-Charon" "Sol" Mass 0.0000002997321 OrbitFrame { - EclipticJ2000 { Center "Sol/Haumea" } + EquatorJ2000 { Center "Sol/Haumea" } } EllipticalOrbit { - Epoch 2454615.0 # 2008 May 28 12:00 - Period 18.2783 - SemiMajorAxis 25657 - Eccentricity 0.249 - Inclination 113.013 - AscendingNode 205.016 - ArgOfPericenter 178.9 - MeanAnomaly 178.5 + Epoch 2452167.5299 # Tperi = 2001 Sep 15 00:43:03 + Period 18.323535 + SemiMajorAxis 25147.829 + Eccentricity 0.15543 + Inclination 88.83 + AscendingNode 206.73 + ArgOfPericenter 143.44 + MeanAnomaly 0 } - UniformRotation + UniformRotation # assumed to match orbit plane { - Period 10 + Period 10 # unknown, very likely asynchronous } LunarLambert 0.5 GeomAlbedo 0.8 InfoURL "https://en.wikipedia.org/wiki/Namaka_(moon)" } +# Size from Fernández-Valenzuela et al. (2021), EPSC2021-609 +# "The stellar occultations by the largest satellite of the dwarf planet Haumea, Hi'iaka" +# https://ui.adsabs.harvard.edu/abs/2021EPSC...15..609F +# Shape and rotation from Hastings et al. (2016), AJ 152 (6), 195 +# "The Short Rotation Period of Hi’iaka, Haumea’s Largest Satellite" +# https://ui.adsabs.harvard.edu/abs/2016AJ....152..195H +# Obliquity from Fernández-Valenzuela et al. (2022), EPSC2022-406 +# "Hi'iaka's physical and dynamical properties using long-term photometric data" +# https://ui.adsabs.harvard.edu/abs/2022EPSC...16..406F "Hi'iaka:Haumea I:136108 Haumea I:S 2005 (2003 EL61) 1" "Sol/Haumea" { Class "minormoon" Mesh "roughsphere.cms" Texture "icymoon.*" - Radius 160 + Radius 175 # "...a larger effective diameter than what has been published so far." + SemiAxes [ 1 0.81 0.81 ] # Amag=0.23, b/a=0.81 if edge-on Mass 0.000002997321 OrbitFrame { - EclipticJ2000 { Center "Sol/Haumea" } + EquatorJ2000 { Center "Sol/Haumea" } } EllipticalOrbit { - Epoch 2454615.0 # 2008 May 28 12:00 - Period 49.462 - SemiMajorAxis 49880 - Eccentricity 0.0513 - Inclination 126.356 - AscendingNode 206.766 - ArgOfPericenter 154.1 - MeanAnomaly 152.8 + Epoch 2452190.3944 # Tperi = 2001 Oct 07 21:27:56 + Period 49.031527 + SemiMajorAxis 49502.940 + Eccentricity 0.05260 + Inclination 79.48 + AscendingNode 192.99 + ArgOfPericenter 276.14 + MeanAnomaly 0 } UniformRotation { - Period 9.8 + Period 9.79736 + Inclination 90 # relative to orbit plane } LunarLambert 0.5 - GeomAlbedo 0.8 + GeomAlbedo 0.66 InfoURL "https://en.wikipedia.org/wiki/Hi'iaka_(moon)" } diff --git a/data/outersys.ssc b/data/outersys.ssc index 05f742d7..d4b132da 100644 --- a/data/outersys.ssc +++ b/data/outersys.ssc @@ -569,10 +569,10 @@ ReferencePoint "Lempo-Hiisi" "Sol" InfoURL "https://en.wikipedia.org/wiki/Actaea_(moon)" } -# Souami et al. (2020), A&A 643, A125 +# Varda's shape from Souami et al. (2020), A&A 643, A125 # "A multi-chord stellar occultation by the large trans-Neptunian object (174567) Varda" # https://ui.adsabs.harvard.edu/abs/2020A%26A...643A.125S/abstract -# Colors from Grundy et al. (2015), Icarus 257, p. 130-138 +# Orbits and colors from Grundy et al. (2015), Icarus 257, p. 130-138 # "The mutual orbit, mass, and density of the large transneptunian binary system Varda and Ilmarë" # https://ui.adsabs.harvard.edu/abs/2015Icar..257..130G/abstract ReferencePoint "Varda-Ilmarë" "Sol" From bbe39366d6ee60678918c96ed7b4f8d2100b5d40 Mon Sep 17 00:00:00 2001 From: AstroChara Date: Fri, 29 Dec 2023 21:26:49 +0700 Subject: [PATCH 5/6] Varda system update MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Finally updated Varda! - Mass ratio assumes spherical, equal density Varda and Ilmarë. - Varda's position angle uses Souami et al. (2022), but the inclination is roughly aligned with the correct orbit of Ilmarë. --- data/outersys.ssc | 58 ++++++++++++++++++++++++++++++----------------- 1 file changed, 37 insertions(+), 21 deletions(-) diff --git a/data/outersys.ssc b/data/outersys.ssc index d4b132da..c7769027 100644 --- a/data/outersys.ssc +++ b/data/outersys.ssc @@ -572,9 +572,10 @@ ReferencePoint "Lempo-Hiisi" "Sol" # Varda's shape from Souami et al. (2020), A&A 643, A125 # "A multi-chord stellar occultation by the large trans-Neptunian object (174567) Varda" # https://ui.adsabs.harvard.edu/abs/2020A%26A...643A.125S/abstract -# Orbits and colors from Grundy et al. (2015), Icarus 257, p. 130-138 +# Colors from Grundy et al. (2015), Icarus 257, p. 130-138 # "The mutual orbit, mass, and density of the large transneptunian binary system Varda and Ilmarë" # https://ui.adsabs.harvard.edu/abs/2015Icar..257..130G/abstract +# Orbital solution from http://www2.lowell.edu/users/grundy/tnbs/orbits.html ReferencePoint "Varda-Ilmarë" "Sol" { EllipticalOrbit @@ -599,8 +600,8 @@ ReferencePoint "Varda-Ilmarë" "Sol" Texture "asteroid.*" Color [ 0.498 0.467 0.432 ] BlendTexture true - Radius 381 # equatorial - Oblateness 0.043 + Radius 383 # equatorial + Oblateness 0.066 # projected OrbitFrame { EquatorJ2000 { Center "Sol/Varda-Ilmarë" } @@ -608,19 +609,23 @@ ReferencePoint "Varda-Ilmarë" "Sol" EllipticalOrbit { Epoch 2455300.0 # 2010 Apr 13 12:00 - Period 5.7503 - SemiMajorAxis 474 - Eccentricity 0.021 - Inclination 103.8 - AscendingNode 5.2 - ArgOfPericenter 106.1 - MeanAnomaly 167.3 + Period 5.75080 + SemiMajorAxis 400 # separation = 4800 km, assumed mass ratio = 1:10.98 + Eccentricity 0.019 + Inclination 100 + MeanLongitude 276 + AscendingNode 3 + LongOfPericenter 140 } - UniformRotation # to match mutual orbit + BodyFrame + { + EquatorJ2000 { Center "Sol/Varda-Ilmarë" } + } + UniformRotation { Period 5.91 - Inclination 80.5 - AscendingNode 5.1 + Inclination 89 + AscendingNode 358 } LunarLambert 0.5 GeomAlbedo 0.099 @@ -637,18 +642,29 @@ ReferencePoint "Varda-Ilmarë" "Sol" Radius 178 OrbitFrame { - EquatorJ2000 { Center "Sol/Varda-Ilmare" } + EquatorJ2000 { Center "Sol/Varda-Ilmarë" } } EllipticalOrbit { Epoch 2455300.0 # 2010 Apr 13 12:00 - Period 5.7503 - SemiMajorAxis 4363 - Eccentricity 0.021 - Inclination 103.8 - AscendingNode 5.2 - ArgOfPericenter 286.1 - MeanAnomaly 167.3 + Period 5.75080 + SemiMajorAxis 4400 # separation = 4800 km, assumed mass ratio = 1:10.98 + Eccentricity 0.019 + Inclination 100 + MeanLongitude 96 + AscendingNode 3 + LongOfPericenter 320 + } + BodyFrame + { + EquatorJ2000 { Center "Sol/Varda-Ilmarë" } + } + UniformRotation # to match mutual orbit + { + Epoch 2455300.0 # 2010 Apr 13 12:00 + Inclination 100 + AscendingNode 3 + MeridianAngle 273 } LunarLambert 0.5 GeomAlbedo 0.085 From d2035519de692d5d963b316afd05754f9bfdafa2 Mon Sep 17 00:00:00 2001 From: AstroChara Date: Sun, 31 Dec 2023 07:50:17 +0700 Subject: [PATCH 6/6] Actaea orbit update --- data/outersys.ssc | 19 +++++++++++-------- 1 file changed, 11 insertions(+), 8 deletions(-) diff --git a/data/outersys.ssc b/data/outersys.ssc index c7769027..d63dd53a 100644 --- a/data/outersys.ssc +++ b/data/outersys.ssc @@ -494,9 +494,11 @@ ReferencePoint "Lempo-Hiisi" "Sol" InfoURL "https://en.wikipedia.org/wiki/(55565)_2002_AW197" } -# Sizes and Actaea's orbit from Grundy et al. (2019), Icarus 334, 62-78 +# Sizes from Grundy et al. (2019), Icarus 334, 62-78 # "Mutual orbit orientations of transneptunian binaries" # http://www2.lowell.edu/users/grundy/abstracts/2019.TNB_orbits.html +# Actaea's orbit from http://www2.lowell.edu/users/grundy/tnbs/orbits.html +# Retrieved on 2023-12-31. # Rotation period from Thirouin et al. (2014), A&A 569, A3 # "Rotational properties of the binary and non-binary populations in the trans-Neptunian belt" # https://ui.adsabs.harvard.edu/abs/2014A%26A...569A...3T/abstract @@ -548,13 +550,13 @@ ReferencePoint "Lempo-Hiisi" "Sol" EllipticalOrbit { Epoch 2454300 # 2007 Jul 18 12:00 UT - Period 5.493882 - SemiMajorAxis 5724 - Eccentricity 0.0098 - Inclination 23.59 - MeanLongitude 303.76 - AscendingNode 45.2 - LongOfPericenter 134 + Period 5.49389 + SemiMajorAxis 5730 + Eccentricity 0.009 + Inclination 23.5 + MeanLongitude 303.8 + AscendingNode 45 + LongOfPericenter 130 } BodyFrame { EquatorJ2000 {} } UniformRotation # to match mutual orbit @@ -576,6 +578,7 @@ ReferencePoint "Lempo-Hiisi" "Sol" # "The mutual orbit, mass, and density of the large transneptunian binary system Varda and Ilmarë" # https://ui.adsabs.harvard.edu/abs/2015Icar..257..130G/abstract # Orbital solution from http://www2.lowell.edu/users/grundy/tnbs/orbits.html +# Retrieved on 2023-12-29. ReferencePoint "Varda-Ilmarë" "Sol" { EllipticalOrbit