{"about":{"site":"https://codewithpapers.app","non_affiliation":"Code with Papers and Syntology are not affiliated with, endorsed by, or sponsored by Papers with Code, Meta, or the pwc-archive mirror.","licence":"CC BY-SA 4.0","licence_url":"https://creativecommons.org/licenses/by-sa/4.0/legalcode","attribution":"https://codewithpapers.app/attribution","modified":"archive material modified by Syntology; see the attribution page"},"url":"/paper/3200-phaethon-polarimetry-in-the-negative","title":"(3200) Phaethon Polarimetry in the Negative Branch: New Evidence for the Anhydrous Nature of the DESTINY+ Target Asteroid","arxiv_id":"2208.11912","date":"2022-08-25","proceeding":null,"authors":["Jooyeon Geem","Masateru Ishiguro","Jun Takahashi","Hiroshi Akitaya","Koji S. Kawabata","Tatsuya Nakaoka","Ryo Imazawa","Fumiki Mori","Sunho Jin","Yoonsoo P. Bach","Hangbin Jo","Daisuke Kuroda","Sunao Hasegawa","Fumi Yoshida","Ko Ishibashi","Tomohiko Sekiguchi","Jin Beniyama","Tomoko Arai","Yuji Ikeda","Yoshiharu Shinnaka","Mikael Granvik","Lauri Siltala","Anlaug A. Djupvik","Anni Kasikov","Viktoria Pinter","Emil Knudstrup"],"abstract":"We report on the first polarimetric study of (3200) Phaethon, the target of JAXA's DESTINY$^+$ mission, in the negative branch to ensure its anhydrous nature and to derive an accurate geometric albedo. We conducted observations at low phase angles (Sun-target-observer angle, alpha = 8.8-32.4 deg) from 2021 October to 2022 January and found that Phaethon has a minimum polarization degree $P_{min}$ = -1.3 +- 0.1 %, a polarimetric slope h = 0.22 +- 0.02 % deg$^{-1}$, and an inversion angle alpha$_0$ = 19.9 +- 0.3 deg. The derived geometric albedo is $p_V$ = 0.11 (in the range of 0.08-0.13). These polarimetric properties are consistent with anhydrous chondrites, and contradict hydrous chondrites and typical cometary nuclei.","url_abs":"https://arxiv.org/abs/2208.11912v1","url_pdf":"https://arxiv.org/pdf/2208.11912v1.pdf","source":{"archive":"pwc-archive (Hugging Face), CC BY-SA 4.0","snapshot":"2025-07-28","licence_url":"https://creativecommons.org/licenses/by-sa/4.0/legalcode","row_kind":"links_only","authors_date_abstract":"arXiv metadata, CC0 1.0 (https://info.arxiv.org/help/license), from the Kaggle arXiv metadata snapshot of 2026-09-12"},"code_links":[{"paper_slug":"3200-phaethon-polarimetry-in-the-negative","repo_url":"https://github.com/geemjy/geem_etal_mnras_2022","is_official":1,"mentioned_in_paper":1,"mentioned_in_github":0,"framework":"none","reach":null}],"tasks":[],"methods":[],"datasets_introduced":[],"methods_introduced":[],"results":[],"syntology":{"atlas_url":null,"mcp":null,"developers":"https://syntology.ai/developers"},"arxiv_metadata":null,"syntology_extracted_results":null}