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While fitting 2023 PC, I noticed a discrepancy in the normalization of the mean anomaly M between the elements.txt, which was correctly in the range of 0...360 degrees and the value in the elements.json which wasn't.
elements.txt:
Orbital elements: 2023 PC
Perihelion 2023 Nov 18.166035 +/- 0.0107246 TT = 3:59:05 (JD 2460266.666035)
Epoch 2023 Aug 17.0 TT = JDT 2460173.5 Earth MOID: 0.0313 Ve: 0.0980
M 265.36145981 +/- 0.0118074 (J2000 ecliptic) Find_Orb
n 1.01580516 +/- 9.82149e-6 Peri. 311.44475 +/- 0.0027232
a 0.98008205 +/- 6.31727e-6 Node 126.07916 +/- 0.0005508
e 0.1829179 +/- 8.47122e-5 Incl. 5.58480 +/- 0.0032467
P 0.97/354.39d H 24.6 G 0.15 U 5.0
q 0.80080746 +/- 7.78775e-5 Q 1.15935663 +/- 9.04761e-5
34 of 45 observations 2023 July 10-Aug. 10; mean residual 0".22
Hi Tim - this is something that I fixed a while back in the source code. I think you're running a version that's at least three years old. (If you hit '.', you'll get some data that includes the version date.)
I do now notice that the Windows .exes on the site are now about a year old. So they'll fix this bug, but I really ought to post an update; various things have been improved/fixed since then.
Unfortunately, I'm currently in Tucson at CSS. I won't be able to actually do it until I get home very late Saturday. Sometime Sunday, I should be able to build the Windows .exes, put together notes on what's changed (quite a bit, actually), and put a note on the Find_Orb users list. But the version already on the site will at least fix this problem.
I do apologize, I had done a fresh git checkout and make && make install so I thought I had the newest version but I discovered that the make install installed to a different place and the version I was picking up in $PATH was indeed from 2019. I have verified that the new version does correctly normalize the values.
I'll leave this Issue for you to close as/when you see fit
While fitting 2023 PC, I noticed a discrepancy in the normalization of the mean anomaly M between the
elements.txt
, which was correctly in the range of 0...360 degrees and the value in theelements.json
which wasn't.elements.txt:
elements.json (relevant segment only, MOIDS trimmed):
Files attached (JSON file renamed to
elements_json.txt
since github doesn't allow upload of that type)elements.txt
elements_json.txt
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