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Transversal Yarkovsky acceleration for Apophis through jet transport

Published online by Cambridge University Press:  16 October 2024

Luis Benet Open the ORCID record for Luis Benet [Opens in a new window]  and
Jorge A. Pérez Hernández
Luis Benet*
Affiliation:
Instituto de Ciencias Físicas, Universidad Nacional Autónoma de México (UNAM) Av. Universidad s/n, Col. Chamilpa, 62210 Cuernavaca, México
Jorge A. Pérez Hernández*
Affiliation:
Telespazio Germany GmbH, Darmstadt, Germany
*
email: benet@icf.unam.mx
email: perez.hz@gmail.com
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Abstract

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In this contribution we describe the jet transport techniques that we used in Pérez-Hernández and Benet (2022) for the estimation of the Yarkovsky transversal acceleration for (99942) Apophis, which included optical and radar astrometry observations obtained during 2021 Apophis’ fly-by. Our numerical approach exploits automatic differentiation techniques which improve the orbital determination problem. We obtain a non-zero Yarkovsky parameter A2 = (−2.899±0.025) × 10−14 au d−2 which is consistent with other recent determinations of this parameter. Our results allow to constrain the collision probabilities for the close approaches in 2029, 2036 and 2068.

Keywords

Yarkovsky effectApophisJet transport
Type
Contributed Paper
Information
Proceedings of the International Astronomical Union , Volume 18 , Symposium S382: Complex Planetary Systems II: Latest Methods for an Interdisciplinary Approach , December 2022 , pp. 59 - 65
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Creative Commons
Creative Common License - CCCreative Common License - BY
This is an Open Access article, distributed under the terms of the Creative Commons Attribution licence (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted re-use, distribution and reproduction, provided the original article is properly cited.
Copyright
© The Author(s), 2024. Published by Cambridge University Press on behalf of International Astronomical Union

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