JpGU-AGU Joint Meeting 2020

Presentation information

[E] Oral

P (Space and Planetary Sciences ) » P-PS Planetary Sciences

[P-PS07] Solar System Small Bodies: Explorations of Ryugu, Bennu, and the Solar System at Large

convener:Taishi Nakamoto(Tokyo Institute of Technology), Tatsuaki Okada(Institute of Space and Astronautical Science, Japan Aerospace Exploration Agency), Dante S Lauretta(University of Arizona), Masateru Ishiguro(Department of Physics and Astronomy, Seoul National University)

[PPS07-12] The ESA Hera mission: rendezvous with a binary asteroid and planetary defense

★Invited Papers

*Patrick Michel1, Tatsuaki Okada2, Michael Kueppers3, Ian Carnelli4, Paolo Martino5, Adriano Campo Bagatin6, Benoit Carry1, Sebastien Charnoz7, Julia de Leon8, Alan Fitzsimmons9, Simon Green10, Carsten Guettler11, Alain Herique12, Martin Jutzi13, Ozgur Karatekin14, Naomi Murdoch15, Petr Pravec16, Holger Sierks11, Colin Snodgrass17, Paolo Tortora18, Kleomenis Tsiganis19, Stephan Ulamec20, Jean-Baptiste Vincent20, Kai Wuennemann21, Andy Cheng22, Andy Rivkin22, Nancy Chabot22, Olivier S Barnouin22, Carolyn Ernst22, Derek C Richardson23, Angela Stickle22, Masahiko Arakawa24, Akiko Nakamura24, Hideaki Miyamoto25, Seiji Sugita25, Makoto Yoshikawa2 (1.Universite Cote D Azur Observatoire De La Cote D Azur CNRS Laboratoire Lagrange, 2.ISAS JAXA, 3.ESA ESAC, 4.ESA HQ, 5.ESA ESTEC, 6.University of Alicante, 7.IPGP, 8.Instituto de Astrofisica de Canarias, 9.Queen's University, 10.The Open University, 11.Max Planck Institute, 12.IPAG, 13.University of Bern, 14.Royal Observatory of Belgium, 15.ISAE-Supaero, 16.Czech Academy of Sciences, 17.The University of Edinburgh, 18.University of Bologna, 19.University of Thessaloniki, 20.DLR, 21.Natural History Museum Berlin, 22.APL JHU, 23.University of Maryland, 24.Kobe University, 25.The University of Tokyo)

Keywords:Asteroids, Binary Asteroids, Impact Physics, Planetary Defense, Cubesats, Space Mission

The Hera mission has been approved for development and launch in 2024 in the new ESA Space Safety Programme by the ESA Council at Ministerial Level, Space19+, in November 2019.

Hera will contribute to the first deflection test of an asteroid, in the framework of the international NASA- and ESA supported Asteroid Impact and Deflection Assessment (AIDA) collaboration.

Hera will rendezvous for the first time with a binary asteroid, (65803) Didymos, and in particular its secondary, of only 160 m in diameter. So far, no mission has visited such a small rock in space. Moreover, for the first time, internal and subsurface properties will be directly measured.

As a crucial contribution to planetary defense, Hera will perform the measurements necessary to understand the effect of the NASA DART impact on Didymos' secondary in 2022, in particular its mass, its internal structure, the direct determination of the momentum transfer and the detailed characterization of the crater left by DART. These measurements will also provide unique information on many current issues in asteroid science.

The scientic legacy of the Hera mission will extend far beyond the core aims of planetary defense. Hera is thus the European contribution to the international asteroid exploration era.

Acknowledgement: Funding support from ESA and from the European Union's Horizon 2020 research and innovation programme under grant agreement No 870377 (project NEO-MAPP) is acknowledged.