In light of the detection of water around Ceres [3], which suggests the dwarf planet is active, Scaling with albedo and size shows that such an impact is still too small to produce any albedo change on Ceres detectable by our analysis. The global albedo of Ceres remains unchanged within 3% of its geometric albedo of 0.09 over the time scale of 10 years. 's consideration, the projectile on Scheila had a size of 35–60 m and a relative velocity of ~5.3 km s … Those features show ther a high ei or a low albedo compared to the surrounding. The surface of Ceres reveals some albedo features that seem to be related to geomorphology.
CERES data properly calibrated would therefore show a slight drop in albedo from 2000 to 2007 as well as an increase in outgoing long wave flux (as Trenberth's climate models would expect).
The former, also called normal reflectance, is a measure of a surface’s relative brightness when illuminated and observed vertically. Previous observations suggested that Ceres has active, but possibly sporadic, water outgassing as well as possibly varying spectral characteristics over a timescale of months. CERES Data Products Energy Balanced and Filled (EBAF) Climate Data Record (CDR) of monthly and climatological averages of observed TOA and computed surface all-sky, clear-sky (spatially complete), and cloud radiative effect (CRE) fluxes and associated clouds, suitable for analysis of variability at the intra-seasonal, inter-annual, and longer time scales. It is commonly used in astronomy to describe the reflective properties of planets, satellites, and asteroids.. Albedo is usually differentiated into two general types: normal albedo and bond albedo. Method . The spectral variability of Ceres recently reported can be mostly explained by changes in the observing geometry. 2. Based on Bodewits et al.
about 3.6–5.4 per cent, depending on the phase angle. albedo distribution over the surface.
We measured the radiance factor of several pixels (different colored rectangles in figure 3 and 2, ) 5
come from albedo features.
However, Ceres’ smooth oblate spheroidal shape suggests that the light-curve variations observed by Chamberlain et al. from Ceres provide a spatial resolution of up to 2.1 km/pixel. These light curves show variations in the V band of 0.04–0.06 mag, i.e.
On approach to Ceres, the FC imaged the surface at relatively low phase angles, for example during the RC1 phase, which favors the albedo reconstruction. We use these images to construct an albedo map of the surface. Albedo, fraction of light that is reflected by a body or surface.
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