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Pluto apsis predictions are now within 0.0810 degrees of orbit period.

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Increased from 7 Chebyshev sections to 8.
This also decreases max arcmin error from 0.336084 to 0.120252.
This commit is contained in:
Don Cross
2020-01-06 11:25:47 -05:00
parent f67ddf1c8d
commit 02dc4e95a4
8 changed files with 895 additions and 764 deletions
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301
source/python/astronomy.py
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@@ -2939,152 +2939,173 @@ def _CalcEarth(time):
# BEGIN CHEBYSHEV
_pluto = [
{ 'tt':-109573.500000, 'ndays':26141.000000, 'coeff':[
[-30.303124711144, -18.980368465705, 3.206649343866],
[20.092745278347, -27.533908687219, -14.641121965990],
[9.137264744925, 6.513103657467, -0.720732357468],
[-1.201554708717, 2.149917852301, 1.032022293526],
[-0.566068170022, -0.285737361191, 0.081379987808],
[0.041678527795, -0.143363105040, -0.057534475984],
[0.041087908142, 0.007911321580, -0.010270655537],
[0.001611769878, 0.011409821837, 0.003679980733],
[-0.002536458296, -0.000145632543, 0.000949924030],
[0.001167651969, -0.000049912680, 0.000115867710],
[-0.000196953286, 0.000420406270, 0.000110147171],
[0.001073825784, 0.000442658285, 0.000146985332],
[-0.000906160087, 0.001702360394, 0.000758987924],
[-0.001467464335, -0.000622191266, -0.000231866243],
[-0.000008986691, 0.000004086384, 0.000001442956],
[-0.001099078039, -0.000544633529, -0.000205534708],
[0.001259974751, -0.002178533187, -0.000965315934],
[0.001695288316, 0.000768480768, 0.000287916141],
[-0.001428026702, 0.002707551594, 0.001195955756]]
{ 'tt':-109573.500000, 'ndays':22873.400000, 'coeff':[
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[14.305366595998, -27.805310343824, -12.981888636985],
[7.925436014130, 3.903691169710, -1.168958644595],
[-0.442101048338, 1.685913511618, 0.659210430825],
[-0.373216809055, -0.063688373891, 0.093260483060],
[-0.009972684884, -0.081495131522, -0.021987413967],
[0.018367454594, -0.004930958318, -0.007352983738],
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[-0.002112022612, 0.000629887022, 0.000315500774],
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[-0.000505895596, -0.001205612810, -0.000504580853],
[0.001126399530, -0.000361584688, -0.000182817780]]
},
{ 'tt':-83432.500000, 'ndays':26141.000000, 'coeff':[
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[14.860676672314, 26.594121136143, 3.819668867047],
[-6.254409044120, 1.408757903538, 2.323726101433],
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[0.001872140444, 0.000679876620, 0.000240384842],
[-0.000334705177, 0.000693528330, 0.000301138309],
[0.000796124758, 0.000653183163, 0.000259527079],
[-0.001276116664, 0.001393959948, 0.000629574865],
[-0.001235158458, -0.000889985319, -0.000351392687],
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[-0.000987113745, -0.000748420747, -0.000296503569],
[0.001721891782, -0.001893675502, -0.000854270937],
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[-0.002019479384, 0.002375617497, 0.001068258925]]
{ 'tt':-86700.100000, 'ndays':22873.400000, 'coeff':[
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[-4.749701608520, 2.918129180139, 2.342054849317],
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[0.103419154134, 0.075735980870, -0.007005683084],
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[0.000043103328, -0.000535097630, -0.000206619902],
[-0.001261838718, 0.000304538227, 0.000156262972],
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[0.001504572723, -0.000267222447, -0.000151193739],
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[0.001713840868, -0.000227638497, -0.000139809761],
[0.000380695392, 0.002350810217, 0.000998895521],
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[0.001367155227, -0.000127067590, -0.000088008420],
[0.000173137697, 0.001084708770, 0.000460942958]]
},
{ 'tt':-57291.500000, 'ndays':26141.000000, 'coeff':[
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[0.001157990330, 0.001849810828, 0.000759641577],
[-0.000883535516, 0.000384038162, 0.000191242192],
[0.000709486562, 0.000655810827, 0.000265431131],
[-0.001525810419, 0.001126870468, 0.000520202001],
[-0.000983210860, -0.001116073455, -0.000456026382],
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[-0.000815102021, -0.000900597010, -0.000365274209],
[0.002090300438, -0.001536778673, -0.000709827438],
[0.001234661297, 0.001342978436, 0.000545313112],
[-0.002517963678, 0.001941826791, 0.000893859860]]
{ 'tt':-63826.800000, 'ndays':22873.400000, 'coeff':[
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[-12.411985665793, 17.572931987772, 9.221186946545],
[-3.090831258400, -2.512294626088, 0.146706800235],
[0.218362234630, -0.226221283768, -0.136477898200],
[0.000880517265, 0.010681097884, 0.002725741572],
[-0.001291221881, -0.003106227879, -0.001273733378],
[-0.000500284392, -0.001446751396, -0.000635982028],
[0.001105591622, -0.001683856224, -0.000768604544],
[0.000938522644, 0.000505869572, 0.000186404007],
[-0.000211177024, -0.001065799522, -0.000446266661],
[0.002134035294, -0.000029658480, -0.000063643319],
[0.000035325265, 0.001388374194, 0.000592202743],
[0.000116349193, 0.000061976724, 0.000023376874],
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[-0.001172329523, -0.000045691921, 0.000008994465]]
},
{ 'tt':-31150.500000, 'ndays':26141.000000, 'coeff':[
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[0.001004921401, 0.001135118493, 0.000406734549],
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[-0.002909908764, 0.001413648354, 0.000677030924]]
{ 'tt':-40953.400000, 'ndays':22873.400000, 'coeff':[
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},
{ 'tt':-5009.500000, 'ndays':26141.000000, 'coeff':[
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{ 'tt':-18080.000000, 'ndays':22873.400000, 'coeff':[
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},
{ 'tt':21131.500000, 'ndays':26141.000000, 'coeff':[
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{ 'tt':4793.400000, 'ndays':22873.400000, 'coeff':[
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{ 'tt':47272.500000, 'ndays':26141.000000, 'coeff':[
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{ 'tt':27666.800000, 'ndays':22873.400000, 'coeff':[
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},
{ 'tt':50540.100000, 'ndays':22873.400000, 'coeff':[
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[0.000523251649, 0.000812554121, 0.000383725061],
[-0.000319832676, 0.000199016237, 0.000096616884],
[0.000782553114, 0.001015845568, 0.000412740772],
[-0.001801819810, 0.001254101038, 0.000581678095],
[-0.000905307447, -0.001101496166, -0.000449936776],
[-0.000183981908, 0.000144296441, 0.000067134500],
[-0.001000404967, -0.001338920106, -0.000549210134],
[0.002108795205, -0.001386328192, -0.000645830667],
[0.001472529436, 0.001926033725, 0.000789479520],
[-0.001749726932, 0.001130345906, 0.000527043570],
[-0.000862478053, -0.001013136301, -0.000413188733],
[0.000958109900, -0.000647958487, -0.000300786397]]
}]
def _ChebScale(t_min, t_max, t):