On 2021-01-12 4:14 PM, Øyvind A. Holm wrote:
On 2021-01-12 10:26:03, Brian Inglis wrote:
One problem may have been that the last leap second was declared when dUT1 was changing rapidly but 6 months later had reached only about -0.4 in 2017 Jan, when the leap second flipped it to about +0.5, dUT1 kept going down to -0.1 around 2019 Mar, and it's wobbled between that and -0.25 since then; see:
https://datacenter.iers.org/data/latestVersion/224_EOP_C04_14.62-NOW.IAU2000... This looks like a very interesting table to study. Could you point me to a document that describes the column values, or maybe give a brief description of the column abbreviations? I might create a project out of this on Gitlab with SQLite and scripts to visualize the data.
Thanks for the interesting link, Øyvind
N 60.376° E 5.3334° OpenPGP fingerprint: A006 05D6 E676 B319 55E2 E77E FB0C BEE8 94A5 06E5 03b4eec4-551b-11eb-971f-5582e081d110
Combined solution C04 for Earth Rotation Parameters consistent with International Terrestrial Reference Frame 2014 https://hpiers.obspm.fr/iers/eop/eopc04/C04.guide.pdf