A portrait of the extreme solar system object 2012 DR<sub>30</sub>

Kiss, Cs.; Szabó, Gy. M.; Horner, Jonathan; Conn, Blair C.; Müller, T.; Vilenius, E.; Sárneczky, K.; Kiss, L. L.; Bannister, Michele; Pál, András; Góbi, Sándor; Verebélyi, Erika; Lellouch, E.; Santos-Sanz, P.; Ortiz, J. L.; Duffárd, R.; Morales, N.

doi:10.1051/0004-6361/201321147

Cited by 17 publications

(50 citation statements)

References 45 publications

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“…Near-Earth asteroids Müller et al (2012) [M12] (101955) Bennu Müller et al (2017) [M13] (308625) 2005 YU55 Müller et al (2017) [M14] (99942) Apophis Müller et al (2017) [M17] (162173) Ryugu Centaurs and transneptunian objects Duffard et al (2014) [D14] 16 Centaurs Fornasier et al (2013) [F13] Kiss et al (2013) [K13] 2012 DR30 Lellouch et al (2010) [L10] (136108) Haumea Lellouch et al (2013) [L13] Lellouch et al (2016) [L16] Pluto+Charon Lim et al (2010) [LIM10] (136472) Makemake, (90482) Orcus Mommert et al (2012) [MM12] 18 plutinos Müller et al (2010) [M10] Vilenius et al (2012) [V12] 19 classical transneptunian objects Vilenius et al (2014) [V14] 18 classical transneptunian objects Vilenius et al (2018) [V18] 1995 SM 55, 2005RR 43, 2003UZ 117, 2003OP 32, 2002TX 300, 1996TO 66, 1999CD 158, 1999 The following parameters are also extracted from the .csv files obtained by these functions: H, JPL radius, albedo, and slope parameter. In those cases when JPL recognizes the target as a comet and not an asteroid, T-mag (Comet's approximate apparent visual total magnitude), M1 (Total absolute magnitude) parameters are extracted and used.…”

Section: Jpl Horizons Datamentioning

confidence: 99%

Small Bodies: Near and Far Database for thermal infrared observations of small bodies in the Solar System

Szakáts

Müller

Alí-Lagoa

et al. 2020

A&A

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In this paper, we present the Small Bodies: Near and Far (SBNAF) Infrared Database, an easy-to-use tool intended to facilitate the modelling of thermal emission of small bodies of the Solar System. Our database collects measurements of thermal emissions for small Solar System targets that are otherwise available in scattered sources and provides a complete description of the data, including all information necessary to perform direct scientific analyses and without the need to access additional external resources. This public database contains representative data of asteroid observations of large surveys (e.g. AKARI, IRAS, and WISE) as well as a collection of small body observations of infrared space telescopes (e.g. the Herschel Space Observatory) and provides a web interface to access this data (https://ird.konkoly.hu).We also provide an example for the direct application of the database and show how it can be used to estimate the thermal inertia of specific populations, e.g. asteroids within a given size range. We show how different scalings of thermal inertia with heliocentric distance (i.e. temperature) may affect our interpretation of the data and discuss why the widely-used radiative conductivity exponent (α = -3/4) might not be adequate in general, as suggested in previous studies.

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Section: Jpl Horizons Datamentioning

confidence: 99%

Small Bodies: Near and Far Database for thermal infrared observations of small bodies in the Solar System

Szakáts

Müller

Alí-Lagoa

et al. 2020

A&A

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“…To do this, we follow the same methodology as that used in previous studies of dynamically unstable objects (e.g., Horner et al 2004a;Horner & Lykawka 2010a;Kiss et al 2013;Pál et al 2015) and follow the evolution of a suite of clones of Chariklo backward in time for a period of 1 Gyr. By following the evolution of a large population of Chariklo clones, we can obtain a statistical overview of the object's potential past history.…”

Section: Chariklomentioning

confidence: 99%

The Dynamical History of Chariklo and Its Rings

Wood

Horner

Hinse

et al. 2017

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Chariklo is the only small solar system body confirmed to have rings. Given the instability of its orbit, the presence of rings is surprising, and their origin remains poorly understood. In this work, we study the dynamical history of the Chariklo system by integrating almost 36,000 Chariklo clones backward in time for 1 Gyr under the influence of the Sun and the four giant planets. By recording all close encounters between the clones and planets, we investigate the likelihood that Chariklo's rings could have survived since its capture to the Centaur population. Our results reveal that Chariklo's orbit occupies a region of stable chaos, resulting in its orbit being marginally more stable than those of the other Centaurs. Despite this, we find that it was most likely captured to the Centaur population within the last 20 Myr, and that its orbital evolution has been continually punctuated by regular close encounters with the giant planets. The great majority (>99%) of those encounters within 1 Hill radius of the planet have only a small effect on the rings. We conclude that close encounters with giant planets have not had a significant effect on the ring structure. Encounters within the Roche limit of the giant planets are rare, making ring creation through tidal disruption unlikely.

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“…Those were included as such, as well as previous Spitzer results (Stansberry et al 2008;Brucker et al 2009) on four objects not observed by Herschel. Finally Kiss et al (2013a) presented a portrait of the newly discovered and yet unclassified object 2012 DR 30 , 4 When the data could not constrain η, a mean η = 1.20 ± 0.35 (Stansberry et al 2008) was adopted to derive diameters and albedos.…”

Section: Published η Valuesmentioning

confidence: 99%

“TNOs are Cool”: A survey of the trans-Neptunian region

Lellouch

Santos-Sanz

Lacerda

et al. 2013

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Aims. The goal of this work is to characterize the ensemble thermal properties of the Centaurs / trans-Neptunian population. Methods. Thermal flux measurements obtained with Herschel/PACS and Spitzer/MIPS provide size, albedo, and beaming factors for 85 objects (13 of which are presented here for the first time) by means of standard radiometric techniques. The measured beaming factors are influenced by the combination of surface roughness and thermal inertia effects. They are interpreted within a thermophysical model to constrain, in a statistical sense, the thermal inertia in the population and to study its dependence on several parameters. We use in particular a Monte-Carlo modeling approach to the data whereby synthetic datasets of beaming factors are created using random distributions of spin orientation and surface roughness. Results. Beaming factors η range from values <1 to ∼2.5, but high η values (>2) are lacking at low heliocentric distances (r h < 30 AU). Beaming factors lower than 1 occur frequently (39% of the objects), indicating that surface roughness effects are important. We determine a mean thermal inertia for Centaurs/ TNO of Γ = (2.5 ± 0.5) J m −2 s −1/2 K −1 , with evidence of a trend toward decreasing Γ with increasing heliocentric (by a factor ∼2.5 from 8-25 AU to 41-53 AU). These thermal inertias are 2-3 orders of magnitude lower than expected for compact ices, and generally lower than on Saturn's satellites or in the Pluto/Charon system. Most high-albedo objects are found to have unusually low thermal inertias. Our results suggest highly porous surfaces, in which the heat transfer is affected by radiative conductivity within pores and increases with depth in the subsurface.

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A portrait of the extreme solar system object 2012 DR₃₀

Cited by 17 publications

References 45 publications

Small Bodies: Near and Far Database for thermal infrared observations of small bodies in the Solar System

Small Bodies: Near and Far Database for thermal infrared observations of small bodies in the Solar System

The Dynamical History of Chariklo and Its Rings

“TNOs are Cool”: A survey of the trans-Neptunian region

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A portrait of the extreme solar system object 2012 DR30

Cited by 17 publications

References 45 publications

Small Bodies: Near and Far Database for thermal infrared observations of small bodies in the Solar System

Small Bodies: Near and Far Database for thermal infrared observations of small bodies in the Solar System

The Dynamical History of Chariklo and Its Rings

“TNOs are Cool”: A survey of the trans-Neptunian region

Contact Info

Product

Resources

About

A portrait of the extreme solar system object 2012 DR₃₀