Skip to main content
SearchLoginLogin or Signup

Recalibration of Hayabusa2 near-infrared spectrometer spectra using Ryugu sample spectra

Presentation #412.04 in the session Asteroids: Near-Earth Objects (Poster)

Published onOct 23, 2023
Recalibration of Hayabusa2 near-infrared spectrometer spectra using Ryugu sample spectra

In 2020, the JAXA’s Hayabusa2 mission successfully brought samples of the C-type asteroid Ryugu back to Earth. As a part of initial descriptions of those samples, a Fourier transform infrared spectrometer (FTIR) was used to obtain near-infrared reflectance spectra of the samples. The FTIR measured spectra have a much higher signal-to-noise ratio than spectra of the surface of Ryugu acquired by the near-infrared spectrometer (NIRS3) on the Hayabusa2 spacecraft, which gave an opportunity to revise the radiometric calibration of NIRS3 for the analysis of data acquired in the extended mission as well as already archived data. We will show results from the recalibration of the NIRS3 spectra using Ryugu sample spectra and will discuss the compositional variations on the surface of Ryugu.

Comments
0
comment
No comments here