“TNOs are Cool”: a survey of the trans-Neptunian region - VII. Size and surface characteristics of (90377) Sedna and 2010 EK139

@article{Pal2012TNOsAC,
  title={“TNOs are Cool”: a survey of the trans-Neptunian region - VII. Size and surface characteristics of (90377) Sedna and 2010 EK139},
  author={Andr'as P'al and Cs. P. Kiss and Thomas Muller and Pablo Santos-Sanz and Esa Vilenius and N. Szalai and Michael Mommert and Emmanuel Lellouch and Miriam Rengel and Paul Hartogh and Silvia Protopapa and J. Stansberry and Jos{\'e} Luis Ortiz and Ren{\'e} Duffard and Audrey Thirouin and Florence Henry and Audrey Delsanti Konkoly Observatory and Mta Research Centre for Astronomy and Earth Sciences and Department of Physics Astronomy and Lor'and Eotvos University and Max-Planck-Institut fur extraterrestrische Physik and Lesia Paris and Cnrs and Deutsche Forschungsanstalt f{\"u}r Luft und Raumfahrt and Institut fur Planetenforschung and Max-Planck-Institut fur Sonnensystemforschung and University of Maryland and Steward Observatory and University of Arizona and Inst. de Astrof'isica de Andaluc'ia and Laboratoire d'Astrophysique de Marseille and Universit́e de Provence},
  journal={Astronomy and Astrophysics},
  year={2012},
  volume={541},
  pages={1-4}
}
We present estimates of the basic physical properties (size and albedo) of (90377) Sedna, a prominent member of the detached trans-Neptunian object population and the recently discovered scattered disk object 2010 EK139, based on the recent observations acquired with the Herschel Space Observatory, within the “TNOs are Cool!” key programme. Our modeling of the thermal measurements shows that both objects have larger albedos and smaller sizes than the previous expectations, thus their surfaces… 

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References

SHOWING 1-10 OF 22 REFERENCES

"TNOs are cool": A survey of the trans-Neptunian region II. The thermal lightcurve of (136108) Haumea

Thermal emission from Kuiper Belt object (136108) Haumea was measured with Herschel-PACS at 100 and 160 micrometers for almost a full rotation period. Observations clearly indicate a 100-micrometer

``TNOs are Cool'': A survey of the trans-Neptunian region . III. Thermophysical properties of 90482 Orcus and 136472 Makemake

Context. The goal of the Herschel open time programme “TNOs are Cooll” is to derive the physical and thermal properties for a large sample of Centaurs, and trans-Neptunian objects (TNOs), including

High-contrast observations of (136108) Haumea. A crystalline water-ice multiple system

Context. The trans-Neptunian region of the Solar System is populated by a wide variety of icy bodies showing great diversity in orbital behavior, size, surface color, and composition. One can also

The Diverse Solar Phase Curves of Distant Icy Bodies. I. Photometric Observations of 18 Trans-Neptunian Objects, 7 Centaurs, and Nereid

We have measured the solar phase curves in B, V, and I for 18 trans-Neptunian objects (TNOs), 7 Centaurs, and Nereid and determined the rotation curves for 10 of these targets. For each body we have

Ices on (90377) Sedna: confirmation and compositional constraints

We report measurements of reflectances of 90377 Sedna at $\lambda > 2.5$  μ m using the Infrared Array Camera (IRAC) on the Spitzer Space Telescope. Sedna orbits well beyond even the Kuiper Belt,

On the Rotation Period of (90377) Sedna

We present precise, ~1%, r-band relative photometry of the unusual solar system object (90377) Sedna. Our data consist of 143 data points taken over eight nights in 2004 October and 2005 January

Transneptunian objects and Centaurs from light curves

Aims. We compile and analyze an extended database of light curve parameters scattered in the literature to search for correlations and study physical properties, including internal structure

ORBITS AND MASSES OF THE SATELLITES OF THE DWARF PLANET HAUMEA (2003 EL61)

Using precise relative astrometry from the Hubble Space Telescope and the W. M. Keck Telescope, we have determined the orbits and masses of the two dynamically interacting satellites of the dwarf