Tidal Mechanism as an Impossible Cause of the Observed Secular Increase of the Astronomical Unit

2009/11/04 by Y. Itoh, Yousuke Itoh · 4 citations
Physics and Astronomy · #Angular momentum #Astro and Planetary Science #Astron #Astronomy #Astrophysics #Classical mechanics #Physics #Planet #Planetary Science and Exploration #Rotation (mathematics) #Secular variation #Solar and Space Plasma Dynamics #Tidal acceleration #Tidal force #astro-ph.EP #astro-ph.SR

paper · pdf · doi:10.1093/pasj/61.6.1373

published in Publications of the Astronomical Society of Japan 61(6), 1373-1374 (Oxford University Press) · 3 pages, no figures. Accepted for publication in Publications of the Astronomical Society of Japan

arxiv created 2009/11/04 · openalex publication_date 2009/12/25 · arxiv updated 2015/05/14 · openalex created_date 2016/06/24 · openalex updated_date 2026/08/05

Abstract

Abstract Krasinsky and Brumberg (2004, Celest. Mech. Dyn. Astron., 90, 267) reported a secular increase in the Astronomical Unit (AU) of 15 meters per century. Recently, Miura et al. (2009, PASJ, 61, 1247) proposed that angular-momentum transfer from the rotation of the Sun to the orbital motion of the solar-system planets may explain the observed increase of the AU. They assumed that the tidal effect between the planets and the Sun is the cause of this transfer. Here, we claim that a tidal effect cannot be a cause of this type of transfer to explain the increase of the AU.

Citations

• Solar Mass Loss, the Astronomical Unit, and the Scale of the Solar System
• The astronomical units
• Secular increase of astronomical unit from analysis of the major planet motions, and its interpretation
• Proposals for the masses of the three largest asteroids, the Moon-Earth mass ratio and the Astronomical Unit
• Secular increase of the Astronomical Unit: a possible explanation in terms of the total angular momentum conservation law