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Table 2
Summary of the avaible thermal observations.
| Year/Mon/Day | Wavelength range [μm] | Rh [AU] | Δ [AU] | α [°] | Telescope | Reference |
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| 2007/05/16 | 15.0, 24.0 | 1.414 | 0.992 | +45.6 | Akari | Hasegawa et al. (2008) |
| 2007/08/28 | 8.8(3 × ), 9.7(1 × ), 10.5(1 × ), 11.7(7 × ), 12.4(3 × ) | 1.287 | 0.306 | +22.3 | Subaru | Hasegawa et al. (2008) |
| 2008/05/02 | 5.2–8.5, 7.4–14.2, 14.0–21.5, 19.5–38.0 | 1.202 | 0.416 | +52.6° | Spitzer | Campins et al. (2009) |
Notes. Rh is the helio-centric distance and Δ the distance between object and telescope. All observations were taken at positive phase angles α (Sun-object-telescope), i.e., leading the Sun, with a cold terminator for a retrograde rotating body.
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