File:N pole precession.png

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English: The outer line with timescale shows the projection of the precession path of the north pole of the Earth on the fixed sky of the epoch J2000.0 for the time interval from 48000 BCE to 52000 CE. The inner line shows the projection of the precession path of the north pole of the Earth's orbit for the same time interval. The dependencies ψA and ωA are used for the precession of the Earth rotation, the dependencies PA and QA are used for the precession of the ecliptic [1]. The white plus indicates the direction of the north pole of the invariable plane [2]. A cyan grid indicates an ecliptic coordinate system and yellow indicates the equatorial coordinate system for the epoch J2000.0. The stars are shown no darker than the magnitude 5.
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Author Voproshatel

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I, the copyright holder of this work, hereby publish it under the following license:
Creative Commons CC-Zero This file is made available under the Creative Commons CC0 1.0 Universal Public Domain Dedication.
The person who associated a work with this deed has dedicated the work to the public domain by waiving all of their rights to the work worldwide under copyright law, including all related and neighboring rights, to the extent allowed by law. You can copy, modify, distribute and perform the work, even for commercial purposes, all without asking permission.

  1. ↑ Vondrák, J. (2011-10-01). "New precession expressions, valid for long time intervals". Astronomy & Astrophysics 534: A22. DOI:10.1051/0004-6361/201117274. ISSN 0004-6361.
  2. ↑ Souami, D. (2012-07-01). "The solar system’s invariable plane". Astronomy & Astrophysics 543: A133. DOI:10.1051/0004-6361/201219011. ISSN 0004-6361.

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current08:50, 23 January 2023Thumbnail for version as of 08:50, 23 January 20231,248 × 1,248 (693 KB)Voproshatel (talk | contribs)Uploaded own work with UploadWizard

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