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A high-resolution global basemap of (101955) Bennu

Abstract : In early 2019, NASA's OSIRIS-REx (Origins, Spectral Interpretation, Resource Identification, and Security-Regolith Explorer) mission surveyed asteroid (101955) Bennu with a collection of instruments, including the OSIRIS-REx Camera Suite (OCAMS) PolyCam imager. Using PolyCam panchromatic images, we constructed a globally controlled basemap of Bennu at an approximate ground sample distance of 5 cm with a mean spatial accuracy of ~30 cm. The basemap was photometrically normalized using a Minneart phase angle correction. New mapping methods were developed to combine images of Bennu's irregular shape and extremely rough surface into a nearly seamless mosaic. Here we present the global basemap of Bennu and discuss the image processing techniques used to construct a high-resolution mosaic of an irregular small body.
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https://hal-insu.archives-ouvertes.fr/insu-03713794
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Submitted on : Tuesday, July 5, 2022 - 8:26:07 AM
Last modification on : Friday, October 14, 2022 - 11:48:25 AM

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C. A. Bennett, D. N. Dellagiustina, K. J. Becker, T. L. Becker, K. L. Edmundson, et al.. A high-resolution global basemap of (101955) Bennu. Icarus, 2021, 357, ⟨10.1016/j.icarus.2020.113690⟩. ⟨insu-03713794⟩

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