Raising the Albedo of 2010 GY6: Fitting ATPM to Wise DataNear-Earth Asteroid 462775 (2010 GY6) is in the Apollo orbit-family with a 1.46 year orbital period. 2010 GY6 was measured by WISE and fitted with NEATM, yielding NEATM model parameters of D=1.1 km, pv=0.028 and eta=2.3.The NEATM-derived geometric albedo of 2010 GY6 is lower than the surface of comet 67P/C-G. The eta value is considerably higher than typical for its phase angle of 33 deg, indicating a cooler surface due to non-zero thermal inertia and/or surface roughness are important. If the thermal inertia and surface roughness are constrained by fitting the Advanced Thermophysical Model (ATPM) to the WISE data, what would the resulting geometric albedo? We find pv=0.06-0.08, in the same range as B- or C-type NEAs like Bennu or JU3.
Document ID
20170003302
Acquisition Source
Ames Research Center
Document Type
Conference Paper
Authors
Wooden, D. H. (NASA Ames Research Center Moffett Field, CA United States)
Rozitis, B. D. (Open Univ. Milton Keynes, United Kingdom)
Jefferson, J. D. (California Univ. Santa Cruz, CA, United States)
Nelson, T. W. (California Univ. Santa Cruz, CA, United States)
Dotson, J. L. (NASA Ames Research Center Moffett Field, CA, United States)