Study of the Plutino Object (208996) 2003 AZ84 from Stellar Occultations: Size, Shape, and Topographic Features

@article{DiasOliveira2017StudyOT,
  title={Study of the Plutino Object (208996) 2003 AZ84 from Stellar Occultations: Size, Shape, and Topographic Features},
  author={A Dias-Oliveira and Bruno Sicardy and Jos{\'e} Luis Ortiz and Felipe Braga-Ribas and Rodrigo Leiva and Roberto Vieira-Martins and Gustavo Benedetti-Rossi and J. I. B. Camargo and Marcelo Assafin and Altair R. Gomes-J{\'u}nior and Tapas Baug and Thyagarajan Chandrasekhar and Josselin Desmars and Ren{\'e} Duffard and Pablo Santos-Sanz and Zhao Ergang and Shashikiran Ganesh and Yasukazu Ikari and P. Irawati and J. Jain and Zhu Liying and Andrea Richichi and Qian Shengbang and Raoul Behrend and Zouhair Benkhaldoun and Noah Brosch and Ahmed Daassou and E. Frappa and Avishay Gal-yam and Rub{\'e}n Garc{\'i}a-Lozano and Micha{\"e}l Gillon and Emmanuel Jehin and Shai Kaspi and Alain Klotz and J. J. Lecacheux and Putra Mahasena and Jean Manfroid and Ilan Manulis and Anaelle J. Maury and Vijay Mohan and Nelson Morales and Eran. O. Ofek and C. Rinner and A. S. Sharma and Stefano Sposetti and Paolo Tanga and Audrey Thirouin and Fr{\'e}d{\'e}ric Vachier and Thomas Widemann and Ayumi Asai and Hayato Watanabe and Hiroyuki Watanabe and Makoto Owada and Hinako Yamamura and Tsutomu Hayamizu and John Thomas Bradshaw and Stephen Kerr and Hideo Tomioka and Susan W. Andersson and G. Dangl and Thomas Haymes and Ram{\'o}n Naves and Guido Wortmann},
  journal={The Astronomical Journal},
  year={2017},
  volume={154}
}
We present results derived from four stellar occultations by the plutino object (208996) 2003 AZ84, detected on 2011 January 8 (single-chord event), 2012 February 3 (multi-chord), 2013 December 2 (single-chord), and 2014 November 15 (multi-chord). Our observations rule out an oblate spheroid solution for 2003 AZ84's shape. Instead, assuming hydrostatic equilibrium, we find that a Jacobi triaxial solution with semiaxes km can better account for all our occultation observations. Combining these… 

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References

SHOWING 1-10 OF 35 REFERENCES

THE SIZE, SHAPE, ALBEDO, DENSITY, AND ATMOSPHERIC LIMIT OF TRANSNEPTUNIAN OBJECT (50000) QUAOAR FROM MULTI-CHORD STELLAR OCCULTATIONS

We present results derived from the first multi-chord stellar occultations by the transneptunian object (50000) Quaoar, observed on 2011 May 4 and 2012 February 17, and from a single-chord

Stellar occultation by (119951) 2002 KX14 on April 26, 2012

Context. Trans-Neptunian objects (TNOs) are important bodies, but very little is known about their basic physical properties such as size, density, and albedo. Aims. We intend to determine sizes,

RESULTS FROM THE 2014 NOVEMBER 15TH MULTI-CHORD STELLAR OCCULTATION BY THE TNO (229762) 2007 UK126

We present results derived from the first multi-chord stellar occultation by the trans-Neptunian object (229762) 2007 UK126, observed on 2014 November 15. The event was observed by the Research and

Candidate stellar occultations by Centaurs and trans-Neptunian objects up to 2014

Context. We study trans-Neptunian objects (TNOs) from stellar occultations. Aims. We predict stellar occultations from 2012.5 to the end of 2014 by 5 Centaurs and 34 TNOs. Methods. These predictions

Candidate stellar occultations by large trans-Neptunian objects up to 2015

We study large trans-neptunian objects (TNOs) using stellar occultations. We derive precise astrometric predictions for stellar occultations by Eris, Haumea, Ixion, Makemake, Orcus, Quaoar, Sedna,

Precise predictions of stellar occultations by Pluto, Charon, Nix, and Hydra for 2008–2015

Context. We investigate transneptunian objects, including Pluto and its satellites, by stellar occultations.Aims. Our aim is to derive precise, astrometric predictions for stellar occultations by

Possible ring material around centaur (2060) Chiron

We propose that several short duration events observed in past stellar occultations by Chiron were produced by rings material. From a reanalysis of the stellar occultation data in the literature we

A Pluto-like radius and a high albedo for the dwarf planet Eris from an occultation

TLDR
The observation of a multi-chord stellar occultation by Eris on 6 November 2010 is reported, consistent with a spherical shape for Eris, and it is anticipated that this atmosphere may periodically sublimate as Eris approaches its perihelion, at 37.8 astronomical units from the Sun.