Skip to main content Accessibility help

We use cookies to distinguish you from other users and to provide you with a better experience on our websites. Close this message to accept cookies or find out how to manage your cookie settings.

Close cookie message
×
  1. Home
  2. Search

Refine search

Refine search

Access:
Content type:
Publication date:
Apply   From and To filters
Subject: Show more
Journals Show more
Publishers: Show more
Societies Show more
Series: Show more
Collections: Show more

Actions for selected content:

Select all | Deselect all
  • View selected items
  • Export citations
  • Download PDF (zip)
  • Save to Kindle
  • Save to Dropbox
  • Save to Google Drive

Save Search

You can save your searches here and later view and run them again in "My saved searches".

Please provide a title, maximum of 40 characters.
Cancel
×

2 results

  • Transversal Yarkovsky acceleration for Apophis through jet transport

  • Luis Benet, Jorge A. Pérez Hernández
  • Journal:
    Proceedings of the International Astronomical Union / Volume 18 / Issue S382 / December 2022
    Published online by Cambridge University Press:
    16 October 2024, pp. 59-65
    Print publication:
    December 2022
    • Article
      • You have access
      • Open access
    • PDF
    • Export citation

  • 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.

  • Hazardous Asteroids and Space Situational Awareness — Do Look UP !

  • Daniel Hestroffer
  • Journal:
    Proceedings of the International Astronomical Union / Volume 18 / Issue S382 / December 2022
    Published online by Cambridge University Press:
    16 October 2024, pp. 126-129
    Print publication:
    December 2022
    • Article
      • You have access
    • PDF
    • Export citation

  • We present in the following the introductory talk on “Hazardous asteroids and the Hera mission”, made during the round table on Space Awareness. It reminds the context of our awareness for near-Earth objects, the characterisation of risk, current international surveillance programmes, and mitigation measures in particular with space missions, and last, a rendez-vous with Apophis to note in your agenda for 2029.