3D shape, cartography, and geoid of Comet 67P C-G |
3D shape, cartography, and geoid of Comet 67P C-G |
Aug 6 2014, 02:11 PM
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#101
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Solar System Cartographer Group: Members Posts: 10184 Joined: 5-April 05 From: Canada Member No.: 227 |
Explorer 1 said:
"A 2D map of C-G seems like a tough order; the projection math alone..." Don't worry! If you can put a grid on the surface (as we have seen already), you can warp that grid into any map projection you like. Mapping will be no huge problem - in fact I expect they have a rough one already (I've been playing with one myself). Phil -------------------- ... because the Solar System ain't gonna map itself.
Also to be found posting similar content on https://mastodon.social/@PhilStooke Maps for download (free PD: https://upload.wikimedia.org/wikipedia/comm...Cartography.pdf NOTE: everything created by me which I post on UMSF is considered to be in the public domain (NOT CC, public domain) |
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Oct 19 2014, 09:15 PM
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#102
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Member Group: Members Posts: 146 Joined: 23-August 06 From: Vriezenveen, Netherlands Member No.: 1067 |
I succeeded in transforming the shape file into CMOD for use in Celestia (anyone still using this?)
But I got the rotation axis wrong. Anyone care to share their .ssc? |
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Oct 20 2014, 08:04 AM
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#103
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Member Group: Members Posts: 102 Joined: 29-January 10 From: Poland Member No.: 5205 |
I succeeded in transforming the shape file into CMOD for use in Celestia (anyone still using this?) But I got the rotation axis wrong. Anyone care to share their .ssc? I love Celestia software so please add here cmod model. Here is my ssc file to comet and Rosseta in one file: CODE "67P:Churyumov-Gerasimenko" "Sol"
{ Class "comet" Mesh "aaa4.cmod" Radius 2.1 Albedo 0.2 Timeline [ { Beginning "2010 06 03 00:00:00.000" Ending "2016 01 01 00:00:00.000" OrbitFrame { EclipticJ2000 { Center "Sol" } } SpiceOrbit { Kernel [ "CORL_DL_002_01____C__00045.BSP" # 2010 JUN 03 00:00:00.000 - 2016 JAN 01 00:00:00.000 "CORB_DV_040_01_______00074.BSP" # 2014 JAN 01 00:00:00.000 - 2016 JAN 01 00:00:00.000 ] Target "1000012" Origin "10" BoundingRadius 1e7 } SpiceRotation { Kernel [ "PCK00010.TPC" "ROS_V23.TF" "ROS_CHURYUMOV_V01.TF" "ROS_CGS_RSOC_V03.TPC" "ROS_140919_STEP.TSC" "NAIF0010.TLS" "CATT_DV_001_01_______00001.BC" # 2013 DEC 31 20:55:00.000 - 2016 JAN 01 03:04:10.000 "CATT_DV_040_01_______00074>BC" # 2014 JAN 01 00:00:00.000 - 2016-JAN 01 00:09:59.999 ] Frame "67P/C-G_CK" BaseFrame "eclipj2000" } } ] } "Rosetta" "Sol" { Class "spacecraft" Mesh "rosetta.3ds" Radius 0.016 Albedo 0.5 Timeline [ { Beginning "2004 03 02 09:26:21.583" Ending "2014 10 22 08:56:09.740" OrbitFrame { EclipticJ2000 { Center "Sol" } } SpiceOrbit { Kernel [ "ORHR_______________00122.BSP" # 2004 MAR 02 09:26:21.583 - 2014 AUG 04 01:16:37.085 "RORB_DV_040_01_______00074.BSP" # 2014 JAN 01 00:00:00.000 - 2014 OCT 22 08:56:09.740 ] Target "-226" Origin "10" BoundingRadius 1e7 } SpiceRotation { Kernel [ "PCK00010.TPC" "ROS_V23.TF" "ROS_CHURYUMOV_V01.TF" "ROS_CGS_RSOC_V03.TPC" "ROS_140919_STEP.TSC" "NAIF0010.TLS" "ATNR_P040302093352_00127.BC" # 2004-MAR-02 09:33:52.767 2014-MAR-03 06:31:19.141 "RATT_DV_040_01_01____00074.BC" # DEC 31,2013 23:59:59.0000 (TDB) OCT 14,2014 10:01:07.1823 "RATM_DM_008_01____C__00062.BC" # SEP 23,2014 10:01:07.1823 (TDB) OCT 24,2014 10:01:07.1824 "RATM_DM_009_01____A__00072.BC" # OCT 24,2014 10:01:07.1824 (TDB) NOV 21,2014 23:26:07.1828 ] Frame "ROS_SPACECRAFT" BaseFrame "eclipj2000" } } ] } -------------------- Adam Hurcewicz from Poland
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