| Title: |
Physical properties of the trans-Neptunian binary 2000 YW₁₃₄ |
| Authors: |
Vara-Lubiano, Mónica; Fernández-Valenzuela, Estela; Kretlow, Mike; Morales, Nicolas; Benedetti-Rossi, Gustavo; Rommel, Flavia; Ortiz, Jose Luis; Sicardy, Bruno; Santos-Sanz, Pablo; Vieira-Martins, Roberto; Braga-Ribas, Felipe; Camargo, Julio; Kilic, Yucel; Morgado, Bruno; Gomes, Altair; Álvarez-Candal, Álvaro; Lecacheux, Jean; Assafin, Marcelo; Duffard, Rene; Souami, Damya; Desmars, Josselin; Mottola, Stefano; Sota, Alfredo; Pal, Andras; Szakáts, Róbert; Kiss, Csaba; Kalup, Cs.; Derekas, Aliz; Zejmo, Michal; Marciniak, Anna; Ogloza, Waldemar; Dangl, Gerhard; Carbognani, Albino; Stirpe, Giovanna; Bruni, Ivan; Csányi, István; Skvar\v, Jure; Mikuz, Herman; Meister, Stefan; Conjat, Matthieu; Ciabattari, Fabrizio; Krannich, Gregor |
| Publication Year: |
2022 |
| Collection: |
German Aerospace Center: elib - DLR electronic library |
| Subject Terms: |
Planetengeodäsie |
| Description: |
The study of trans-Neptunian binaries (TNBs) remains one of the most active areas of progress in understanding the solar system beyond Neptune. TNBs have been found in every dynamical population of the trans-Neptunian region (Noll et al. 2020), with proportions ranging from 29 % in the cold classical population to 5.5 % for the remaining classes combined (Brunini 2020). The formation of the contact TNB Arrokoth is one of the challenges that formation models face nowadays. The current angular momentum of Arrokoth is too low and the current binary formation scenarios, by either rotational fission or streaming instability (Nesvorný et al. 2019), require also loss of angular momentum (McKinnon et al. 2020). Additionally, formation mechanisms of close binaries may be distinct from those for the wider pairs. As the angular momentum of a system approaches that of an object spinning near its critical rotation period, rotational fission is the most likely explanation for their formation (Descamps et al. 2008), which is thought to be the case for the proposed satellites of Varuna and 2002 TC302 systems (Fernández-Valenzuela et al. 2019; Ortiz et al. 2020). If close TNBs turn out to be common for objects rotating close to the breakup limit, that could reveal important clues about angular momentum evolution during accretion for TNOs (Petit et al. 2011). However, characterizing binary systems at such distances is challenging. From the ~120 known TNBs, only around 40 have their mutual orbit fully determined, let alone physical characterization. 2000 YW134 is a TNB in a 3:8 resonance with an orbital semi-major axis of 57.4 au (a rare occurrence). On February 23rd, 2022, it occulted the Gaia EDR3 star 627356458358636544 (V = 17.1 mag). The stellar occultation was initially predicted using the JPL orbit solution #24, and updated using data from the 1.5-m and 1.23-m telescopes at Sierra Nevada and Calar Alto Observatories, using the same methodology as explained in Ortiz et al (2020). From the 17 observatories involved, seven ... |
| Document Type: |
conference object |
| File Description: |
application/pdf |
| Language: |
English |
| Relation: |
https://elib.dlr.de/193006/1/m0uz5l3p6vkn7st284vropqsgun5et91%20%281%29.pdf; Vara-Lubiano, Mónica und Fernández-Valenzuela, Estela und Kretlow, Mike und Morales, Nicolas und Benedetti-Rossi, Gustavo und Rommel, Flavia und Ortiz, Jose Luis und Sicardy, Bruno und Santos-Sanz, Pablo und Vieira-Martins, Roberto und Braga-Ribas, Felipe und Camargo, Julio und Kilic, Yucel und Morgado, Bruno und Gomes, Altair und Álvarez-Candal, Álvaro und Lecacheux, Jean und Assafin, Marcelo und Duffard, Rene und Souami, Damya und Desmars, Josselin und Mottola, Stefano und Sota, Alfredo und Pal, Andras und Szakáts, Róbert und Kiss, Csaba und Kalup, Cs. und Derekas, Aliz und Zejmo, Michal und Marciniak, Anna und Ogloza, Waldemar und Dangl, Gerhard und Carbognani, Albino und Stirpe, Giovanna und Bruni, Ivan und Csányi, István und Skvar\v, Jure und Mikuz, Herman und Meister, Stefan und Conjat, Matthieu und Ciabattari, Fabrizio und Krannich, Gregor (2022) Physical properties of the trans-Neptunian binary 2000 YW₁₃₄. AAS/Division for Planetary Sciences Meeting, 2022-10-02 - 2022-10-07, London, Canada. |
| Availability: |
https://elib.dlr.de/193006/; https://elib.dlr.de/193006/1/m0uz5l3p6vkn7st284vropqsgun5et91%20%281%29.pdf; https://baas.aas.org/pub/2022n8i413p01 |
| Rights: |
cc_by |
| Accession Number: |
edsbas.F69C57F1 |
| Database: |
BASE |