The AKARI IRC asteroid flux catalogue: updated diameters and albedos
V. Al\'i-Lagoa, T. G. M\"uller, F. Usui, S. Hasegawa

TL;DR
This paper updates the AKARI IRC asteroid flux catalogue by deriving diameters and albedos for over 5,000 asteroids using thermal infrared data and the NEATM, highlighting the catalogue's scientific applications and model accuracy.
Contribution
It presents an updated asteroid diameter and albedo catalogue based on AKARI data, incorporating improved fitting techniques and analysis of observational geometry effects.
Findings
Diameters agree with occultation measurements within expected accuracy.
Systematic deviations occur at phase angles above 50 degrees.
Multiple observations can provide three-dimensional shape insights.
Abstract
The AKARI IRC All-sky survey provided more than twenty thousand thermal infrared observations of over five thousand asteroids. Diameters and albedos were obtained by fitting an empirically calibrated version of the standard thermal model to these data. After the publication of the flux catalogue in October 2016, our aim here is to present the AKARI IRC all-sky survey data and discuss valuable scientific applications in the field of small-body physical properties studies. As an example, we update the catalogue of asteroid diameters and albedos based on AKARI using the near-Earth asteroid thermal model (NEATM). We fit the NEATM to derive asteroid diameters and, whenever possible, infrared beaming parameters. We obtained a total of 8097 diameters and albedos for 5170 asteroids, and we fitted the beaming parameter for almost two thousand of them. When it was not possible to fit the beaming…
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