Commas in the MPC CometEls.txt file causes errors.

On the most recent versions of the CometEls.txt file, the code mpc.load_comets_dataframe() barfs, with an error of: ParserError: Error tokenizing data. C error: Expected 12 fields in line 522, saw 13

The problem seems to be that (for whatever reason) the CometsEls.txt file sometimes has a comma in the last column, e.g.: 0001P 1986 02 13.7202 0.602070 0.966313 111.8933 58.9646 162.2253 20220129 4.0 6.0 1P/Halley 98, 1083

If you edit the file and replace the commas with spaces, the problem goes away. So, the code in load_comets_dataframe() ought to either pre-sanitize the data or somehow treat commas in the content as text and not delimiters.

[jurezakrajsek]

Not sure if this is related, but there was some errors on the MPC side, the file was not generated correctly and it contained some strange lines.

             **** 01  1       0.00      0.00        0         0         0                  9.0  4.0
    CJ95O010  1997 03 29.6811  0.891645  0.994970  130.4217  282.8643   89.2250  20220607  -2.0  4.0  C/1995 O1 (Hale-Bopp)                                    MPC106342

I have reported this to the MPC and they have resolved it.

[Bernmeister]

The fix is in! Many thanks again @brandon-rhodes

FWIW, I sudo pip3 uninstall skyfield, then sudo pip3 cache remove skyfield and installed (as per above) and then verified the code was actually present.