{"action":"created","issue":{"url":"https://api.github.com/repos/oorb/oorb/issues/17","labels_url":"https://api.github.com/repos/oorb/oorb/issues/17/labels{/name}","comments_url":"https://api.github.com/repos/oorb/oorb/issues/17/comments","events_url":"https://api.github.com/repos/oorb/oorb/issues/17/events","html_url":"https://github.com/oorb/oorb/issues/17","id":113954089,"number":17,"title":"Test case comparison","user":{"login":"rhiannonlynne","id":1855711,"avatar_url":"https://avatars.githubusercontent.com/u/1855711?v=3","gravatar_id":"","url":"https://api.github.com/users/rhiannonlynne","html_url":"https://github.com/rhiannonlynne","followers_url":"https://api.github.com/users/rhiannonlynne/followers","following_url":"https://api.github.com/users/rhiannonlynne/following{/other_user}","gists_url":"https://api.github.com/users/rhiannonlynne/gists{/gist_id}","starred_url":"https://api.github.com/users/rhiannonlynne/starred{/owner}{/repo}","subscriptions_url":"https://api.github.com/users/rhiannonlynne/subscriptions","organizations_url":"https://api.github.com/users/rhiannonlynne/orgs","repos_url":"https://api.github.com/users/rhiannonlynne/repos","events_url":"https://api.github.com/users/rhiannonlynne/events{/privacy}","received_events_url":"https://api.github.com/users/rhiannonlynne/received_events","type":"User","site_admin":false},"labels":[],"state":"open","locked":false,"assignee":null,"milestone":null,"comments":11,"created_at":"2015-10-29T00:23:44Z","updated_at":"2015-11-04T18:21:20Z","closed_at":null,"body":"This is an example object for which we have attempted to generate positions and information from JPL tools and from OOrb and found disagreement. Any ideas on the source of the problem?\r\n\r\nInitial orbit: \r\n!!OID FORMAT q e i node argperi t_p H t_0 INDEX N_PAR MOID COMPCODE\r\ntest COM 0.682084069033 0.540590690499 2.720497800946 314.400746000785 256.929800925527 54770.509283572 10.000000 54466.000000000 1 6 1 HORIZONS\r\n\r\n(we tested converting this orbit to cartesian format and back, then back and forth again .. the round-trip is successful to the sub-m level). \r\n\r\n----\r\nPropagate to 1996 (from the original 2008 epoch) and generate ephemeris, using JPL tools:\r\n@ 50100.36672 comparison of position:\r\nJPL solution (RA, DEC, EPOCH)\r\n141.711815307104 23.7960976997533 50100.36672\r\n\r\nand more x/y/z coordinate details:\r\nJPL Prediction at 1996-Jan-18 08:48 for code 807:\r\nT_INI= 2450100.36672\r\nX_INI -0.517682378128683 0.943248570273295 0.0138926673375748\r\nV_INI -0.00998928226996381 -0.015808708337284 -0.000855782305461691\r\n\r\nET, UT: 50100.3674396757 50100.3667199998\r\n\r\nX_OBJ -0.52266867184861 0.935304708306426 0.0134637474765193\r\nV_OBJ -0.00992699408359701 -0.0159211488345263 -0.000857426265364538\r\nX_EMI -0.522663329718481 0.935313276079784 0.0134642088913595\r\nV_EMI -0.0099270617751788 -0.0159210277351197 -0.000857424514590214\r\nX_EAR -0.455709608010423 0.87189992496842 4.24882940514015e-06\r\nV_EAR -0.0155359863515486 -0.00803366185969467 -3.62566342809734e-07\r\nX_OBS -0.4557464890272 0.871892436677645 -1.57456761292751e-05\r\nV_OBS -0.0155428095495517 -0.00824690074520342 9.20848940911051e-05\r\nR_OBS -0.0669168367280867 0.0634208404611714 0.0134799544634611\r\n (R_OBS is the aberrated position of the obect with respect to the observer)\r\n\r\n----\r\n\r\nPropagate to 1996 and generate ephemeris, using Oorb:\r\n\r\noorb --task=propagation --orb-in=tjpl.des --epoch-mjd-tt=50100.3674396757 --conf=oorb.conf --orb-out=tjpl_96.des\r\noorb --task=ephemeris --orb-in=tjpl_96.des --code=807 | awk '{print $3, $5, $6, $4, $29, $30, $31, $32, $33, $34, $35, $36, $37}'\r\nMJD_UTC/UT1 RA Dec Delta HEclObj_X HEclObj_Y HEclObj_Z HEclObj_dX/dt HEclObj_dY/dt HEclObj_dZ/dt HEclObsy_X HEclObsy_Y HEclObsy_Z\r\n50100.3667202778 141.7331149446 23.7892157209 0.0931690463 -0.5226815605 0.9352840937 0.0134627463 -0.0099268203 -0.0159214282 -0.0008574418 -0.4557464972 0.8718924324 -0.0000155979\r\n\r\nEarth still off by about 22km in z:\r\n\r\n(oorb_obs - jpl_obs) * au2m / 1000.\r\narray([ -1.22265088, -0.63993569, 22.10730894])\r\nbut now the emitter location is also off by a large amount.\r\n\r\n(oorb_xyz - jpl_xyz) * au2m / 1000.\r\narray([-2727.32491525, -4365.68401569, -218.80366738])\r\n\r\n(and double-checking the propagation using cartesian elements -- no difference in xyz although 0.01\" difference in ra)\r\noorb --task=propagation --orb-in=tjpl2.des --epoch-mjd-tt=50100.3674396757 --conf=oorb.conf --orb-out=tjpl_c_96.des\r\noorb --task=ephemeris --orb-in=tjpl_c_96.des --code=807 | awk '{print $3, $5, $6, $4, $29, $30, $31, $32, $33, $34, $35, $36, $37}'\r\nMJD_UTC/UT1 RA Dec Delta HEclObj_X HEclObj_Y HEclObj_Z HEclObj_dX/dt HEclObj_dY/dt HEclObj_dZ/dt HEclObsy_X HEclObsy_Y HEclObsy_Z\r\n50100.3667202778 141.7331111635 23.7892169364 0.0931690475 -0.5226815572 0.9352840989 0.0134627466 -0.0099268203 -0.0159214281 -0.0008574418 -0.4557464972 0.8718924324 -0.0000155979\r\n\r\nAny suggestions?\r\n\r\n(tagging @stevechesley too)"},"comment":{"url":"https://api.github.com/repos/oorb/oorb/issues/comments/153817938","html_url":"https://github.com/oorb/oorb/issues/17#issuecomment-153817938","issue_url":"https://api.github.com/repos/oorb/oorb/issues/17","id":153817938,"user":{"login":"rhiannonlynne","id":1855711,"avatar_url":"https://avatars.githubusercontent.com/u/1855711?v=3","gravatar_id":"","url":"https://api.github.com/users/rhiannonlynne","html_url":"https://github.com/rhiannonlynne","followers_url":"https://api.github.com/users/rhiannonlynne/followers","following_url":"https://api.github.com/users/rhiannonlynne/following{/other_user}","gists_url":"https://api.github.com/users/rhiannonlynne/gists{/gist_id}","starred_url":"https://api.github.com/users/rhiannonlynne/starred{/owner}{/repo}","subscriptions_url":"https://api.github.com/users/rhiannonlynne/subscriptions","organizations_url":"https://api.github.com/users/rhiannonlynne/orgs","repos_url":"https://api.github.com/users/rhiannonlynne/repos","events_url":"https://api.github.com/users/rhiannonlynne/events{/privacy}","received_events_url":"https://api.github.com/users/rhiannonlynne/received_events","type":"User","site_admin":false},"created_at":"2015-11-04T18:21:20Z","updated_at":"2015-11-04T18:21:20Z","body":"This is great Mikael! I'm trying to update my version and check how everything works for me. \r\nI was wondering if I needed an update to the oorb.conf file?  I'm assuming I could put de430.dat in for the planetary ephemeris file, but do I need to change the list of perturbers?"}}