| Download | - View final version: The sizes and albedos of Centaurs 2014 YY₄₉ and 2013 NL₂₄ from stellar occultation measurements by RECON (PDF, 6.6 MiB)
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| DOI | Resolve DOI: https://doi.org/10.3847/PSJ/abd62a |
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| Author | Search for: Strauss, Ryder H.ORCID identifier: https://orcid.org/0000-0001-6350-807X; Search for: Leiva, RodrigoORCID identifier: https://orcid.org/0000-0002-6477-1360; Search for: Keller, John M.ORCID identifier: https://orcid.org/0000-0002-0915-4861; Search for: Wilde, Elizabeth; Search for: Buie, Marc W.ORCID identifier: https://orcid.org/0000-0003-0854-745X; Search for: Weryk, Robert J.ORCID identifier: https://orcid.org/0000-0002-0439-9341; Search for: Kavelaars, JJ1ORCID identifier: https://orcid.org/0000-0001-7032-5255; Search for: Bridges, Terry; Search for: Wasserman, Lawrence H.ORCID identifier: https://orcid.org/0000-0001-5769-0979; Search for: Trilling, David E.ORCID identifier: https://orcid.org/0000-0003-4580-3790; Search for: Ainsworth, Deanna; Search for: Anthony, Seth; Search for: Baker, Robert; Search for: Bardecker, Jerry; Search for: Bean, James K; Search for: Bock, Stephen; Search for: Chase, Stefani; Search for: Dean, Bryan; Search for: Frei, Chessa; Search for: George, Tony; Search for: Gill, Harnoorat; Search for: Gimple, H. Wm.; Search for: Givot, Rima; Search for: Hopfe, Samuel E.; Search for: Cota, Juan M.; Search for: Kehrli, Matthew; Search for: King, Rebekah; Search for: L. Haley, Sean; Search for: Lara, Charisma; Search for: Lund, Nels; Search for: Mattes, Martin L.; Search for: McCandless, Keitha; Search for: McCrystal, Delsie; Search for: McRae, Josh; Search for: Rodriguez Melgarejo, Leonardo Emmanuel; Search for: Mendoza, Paola; Search for: Miller, Alexandra; Search for: Norfolk, Ian R.; Search for: Palmquist, Bruce; Search for: Reaves, Robert D.; Search for: Rivard, Megan L; Search for: von Schalscha, Michael; Search for: Schar, Ramsey; Search for: Stoffel, Timothy J; Search for: Swanson, Diana J.; Search for: Thompson, Doug; Search for: Wise, J. A.; Search for: Woods, Levi; Search for: Yang, Yuehai |
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| Affiliation | - National Research Council of Canada. Herzberg Astronomy and Astrophysics
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| Funder | Search for: National Science Foundation |
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| Format | Text, Article |
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| Physical description | 19 p. |
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| Subject | stellar occultation; Centaur group |
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| Abstract | In 2019, the Research and Education Collaborative Occultation Network (RECON) obtained multiple-chord occultation measurements of two Centaur objects: 2014 YY49 on 2019 January 28 and 2013 NL24 on 2019 September 4. RECON is a citizen-science telescope network designed to observe high-uncertainty occultations by outer solar system objects. Adopting circular models for the object profiles, we derive a radius r=16⁺²₋₁ km and a geometric albedo Pᵥ = 0.13⁺⁰.⁰¹⁵₋₀.₀₂₅ for 2014 YY49 and a radius r = 66⁺⁵₋₅ km and a geometric albedo Pᵥ = 0.045⁺⁰.⁰⁰⁶₋₀.₀₀₈ for 2013 NL₂₄. To the precision of these measurements, no atmosphere or rings are detected for either object. The two objects measured here are among the smallest distant objects measured with the stellar occultation technique. In addition to these geometric constraints, the occultation measurements provide astrometric constraints for these two Centaurs at a higher precision than has been feasible by direct imaging. To supplement the occultation results, we also present an analysis of color photometry from the Pan-STARRS surveys to constrain the rotational light curve amplitudes and spectral colors of these two Centaurs. We recommend that future work focus on photometry to more deliberately constrain the objects' colors and light curve amplitudes and on follow-on occultation efforts informed by this astrometry. |
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| Publication date | 2021-02-05 |
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| Publisher | IOP |
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| Licence | |
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| In | |
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| Language | English |
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| Peer reviewed | Yes |
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| Export citation | Export as RIS |
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| Report a correction | Report a correction (opens in a new tab) |
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| Record identifier | ef8fa0b5-7967-4d16-a8c5-c0522449ff04 |
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| Record created | 2022-11-09 |
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| Record modified | 2022-11-09 |
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