The first detection of an atmosphere on a trans-Neptunian object beyond Pluto

arXiv:2605.02243 · astro-ph.EP · Submitted 2026-05-04 · Read on arXiv

Ko Arimatsu, Fumi Yoshida, Tsutomu Hayamizu, Satoshi Takita, Katsumasa Hosoi, Takafumi Ootsubo, Jun-ichi Watanabe

astro-ph.EP

Submitted: 2026-05-04

Comments: Original submitted version; 20 pages, 4 figures, 3 extended data figs. The revised and published version appears in Nature Astronomy under the title "Detection of an atmosphere on a trans-Neptunian object beyond Pluto"

DOI: 10.1038/s41550-026-02846-1

License: http://arxiv.org/licenses/nonexclusive-distrib/1.0/

Terminology

• Aperture — 2× in this paper · explained in 1 episode
• Calibration — 2× in this paper · explained in 7 episodes
• Trace — 2× in this paper · explained in 2 episodes
• Abundance — 1× in this paper · explained in 1 episode
• Aperture Photometry — 1× in this paper · explained in 1 episode
• Global Positioning System — 1× in this paper
• Organized Autotelescopes for Serendipitous Event Survey — 1× in this paper
• Re-normalised Unit Weight Error — 1× in this paper

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