Modeling of 3D trajectory of Hayabusa2 re-entry based on acoustic observations - INSU - Institut national des sciences de l'Univers Access content directly
Journal Articles Publications of the Astronomical Society of Japan Year : 2022

Modeling of 3D trajectory of Hayabusa2 re-entry based on acoustic observations

Yasuhiro Nishikawa
  • Function : Author
Masa-Yuki Yamamoto
  • Function : Author
Eleanor K. Sansom
  • Function : Author
Hadrien A. R. Devillepoix
  • Function : Author
Martin C. Towner
  • Function : Author
Yoshihiro Hiramatsu
  • Function : Author
Taichi Kawamura
Kazuhisa Fujita
  • Function : Author
Makoto Yoshikawa
  • Function : Author
Yoshiaki Ishihara
  • Function : Author
Islam Hamama
  • Function : Author
Norihisa Segawa
  • Function : Author
Yoshihiro Kakinami
  • Function : Author
Hiroshi Katao
  • Function : Author
Yuichiro Inoue
  • Function : Author
Philip A. Bland
  • Function : Author

Abstract

On 2020 December 5 at 17:28 UTC, Japan Aerospace Exploration Agency's Hayabusa2 sample return capsule (SRC) re-entered Earth's atmosphere. The capsule passed through the atmosphere at supersonic speeds, emitting sound and light. The inaudible sound was recorded by infrasound sensors installed by Kochi University of Technology and Curtin University. Based on analysis of the recorded infrasound, the trajectory of the SRC in two cases, one with constant-velocity linear motion and the other with silent flight, could be estimated with an accuracy of ${0{_{.}^{\circ}}5}$ in elevation and 1° in direction. A comparison with optical observations suggests a state of flight in which no light is emitted but sound is emitted. In this paper, we describe the method and results of the trajectory estimation.
Fichier principal
Vignette du fichier
psab126.pdf (1.47 Mo) Télécharger le fichier
Origin Publisher files allowed on an open archive

Dates and versions

insu-03584322 , version 1 (22-02-2022)

Licence

Identifiers

Cite

Yasuhiro Nishikawa, Masa-Yuki Yamamoto, Eleanor K. Sansom, Hadrien A. R. Devillepoix, Martin C. Towner, et al.. Modeling of 3D trajectory of Hayabusa2 re-entry based on acoustic observations. Publications of the Astronomical Society of Japan, 2022, pp.758-775. ⟨10.1093/pasj/psab126⟩. ⟨insu-03584322⟩

Collections

INSU
22 View
23 Download

Altmetric

Share

Gmail Mastodon Facebook X LinkedIn More