Investigation of F2 coefficient of ast_args() #671
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According to pp.23 of Chapter.5 of IERS Conventions (1996), F2 coefficient for 3rd power of t is -0.000136, not 0.000136.
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I checked the reference but did not find any problem. https://iers-conventions.obspm.fr/conventions_archive.php Show your reference. |
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Thanks. The PS version of IERS Conventions 1996 shows '+ 0".000136 t^3' in F2 (pp. 23). https://iers-conventions.obspm.fr/archive/1996/ierscon.ps The latest IERS Conventions (2010) also shows '+ 0.000136" t^3' in F2 (eq. 5.43, pp. 67). https://www.iers.org/SharedDocs/Publikationen/EN/IERS/Publications/tn/TechnNote36/tn36_043.pdf I'm not sure which is correct but the current code complies with IERS Conventions 2010. |
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@tomojitakasu Thank you for your further investigation. I agree with your decision. If you like my PR with a comment about the reversion, please merge it, or just close this PR. |
fenrir-naru
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According to pp.23 of Chapter.5 of IERS Conventions (1996), F2 coefficient for 3rd power of t is -0.000136, not 0.000136.