Version 1
: Received: 11 September 2021 / Approved: 13 September 2021 / Online: 13 September 2021 (10:53:54 CEST)
Version 2
: Received: 12 January 2022 / Approved: 13 January 2022 / Online: 13 January 2022 (12:58:55 CET)
Křížek, M., Gueorguiev, V.G. & Maeder, A. An Alternative Explanation of the Orbital Expansion of Titan and Other Bodies in the Solar System. Gravit. Cosmol. 28, 122–132 (2022). https://doi.org/10.1134/S0202289322020086
Křížek, M., Gueorguiev, V.G. & Maeder, A. An Alternative Explanation of the Orbital Expansion of Titan and Other Bodies in the Solar System. Gravit. Cosmol. 28, 122–132 (2022). https://doi.org/10.1134/S0202289322020086
Křížek, M., Gueorguiev, V.G. & Maeder, A. An Alternative Explanation of the Orbital Expansion of Titan and Other Bodies in the Solar System. Gravit. Cosmol. 28, 122–132 (2022). https://doi.org/10.1134/S0202289322020086
Křížek, M., Gueorguiev, V.G. & Maeder, A. An Alternative Explanation of the Orbital Expansion of Titan and Other Bodies in the Solar System. Gravit. Cosmol. 28, 122–132 (2022). https://doi.org/10.1134/S0202289322020086
Abstract
Recently it was found from Cassini data that the mean recession speed of Titan from Saturn is v = 11.3 ± 2.0 cm/yr which corresponds to a tidal quality factor of Saturn Q = 100 while the standard estimate yields Q ≥ 6 · 104 . It was assumed that such a large speed v is due to a resonance locking mechanism of five inner mid-sized moons of Saturn. In this paper, we show that an essential part of v may come from a local Hubble expansion. Namely, we show that the Hubble-Lemaître constant H0 recalculated to the Saturn-Titan distance D is 8.15 cm/(yr D). Our hypothesis is based on many other observations showing a slight expansion of the Solar system and also of our Galaxy at a rate comparable with H0. We demonstrate that the large disproportion in estimating the Q factor can be just caused by the local expansion effect.
Keywords
local Hubble expansion; Solar system; Titan; laws of conservation of energy and angular momentum
Subject
Physical Sciences, Astronomy and Astrophysics
Copyright:
This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
