Thermal infrared observations of asteroid (99942) Apophis with Herschel

@article{Muller2014ThermalIO,
  title={Thermal infrared observations of asteroid (99942) Apophis with Herschel},
  author={Thomas Muller and Cs. P. Kiss and P. Scheirich and Petr Pravec and Laurence O'Rourke and Esa Vilenius and Bruno Altieri},
  journal={Astronomy and Astrophysics},
  year={2014},
  volume={566}
}
The near-Earth asteroid (99942) Apophis is a potentially hazardous asteroid. We obtained far-infrared observations of this asteroid with the Herschel Space Observatory PACS instrument at 70, 100, and 160 mum. These were taken at two epochs in January and March 2013 during a close-Earth encounter. These first thermal measurements of Apophis were taken at similar phase angles before and after opposition. We performed a detailed thermophysical model analysis by using the spin and shape model… 

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References

SHOWING 1-10 OF 38 REFERENCES

Physical properties of asteroid 308635 (2005 YU55) derived from multi-instrument infrared observations during a very close Earth approach

The near-Earth asteroid (308635) 2005 YU55 is a potentially hazardous asteroid which was discovered in 2005 and passed Earth on November 8 th 2011 at 0.85 lunar distances. This was the closest known

Thermal infrared observations of near-Earth asteroid 2002 NY40

We obtained N -band observations of the Apollo asteroid 2002 NY40 during its close Earth fly-by in August 2002 with TIMMI2 at the ESO 3.6 m telescope. The photometric measurement allowed us to derive

Thermal infrared observations of the Hayabusa spacecraft target asteroid 25143 Itokawa

We obtained N - and Q -band observations of the Apollo-type asteroid 25143 Itokawa during its close Earth approach in July 2004 with TIMMI2 at the ESO 3.6 m telescope. Our photometric measurement, in

65 Cybele in the thermal infrared: Multiple observations and thermophysical analysis

We investigated the physical and thermal properties of 65 Cybele, one of the largest main-belt asteroids. Based on published and recently obtained thermal infrared observations, including ISO

ORBITAL IDENTIFICATION FOR ASTEROID 152563 (1992 BF) THROUGH THE YARKOVSKY EFFECT

Often a newly discovered near-Earth asteroid is linked to old observations of a formerly lost object. This orbital identification is done using a standard dynamical model that accounts for

Spectral properties and composition of potentially hazardous Asteroid (99942) Apophis

The shape and rotation of asteroid 2008 TC3

Abstract– On October 6, 2008, a small F‐class asteroid 2008 TC3 was discovered by Catalina Sky Survey telescope, and exploded 20 hr later in the Earth’s atmosphere at 37 km altitude. We analyzed

Asteroids as calibration standards in the thermal infrared for space observatories

Asteroids have been used extensively as calibration sources for the Infrared Space Observatory (ISO) and are planned to be used by future groundbased, airborne and space-based projects in the thermal