Observations of Pluto from New Horizons have been combined with previous ground-based observations and fit to a radiative transfer model based on Chandrasekhar’s planetary problem and Hapke theory to simultaneously derive the physical properties of the dwarf planet’s surface and atmosphere. We derive the macroscopic roughness, single-scattering albedo, and directional scattering properties of the surface, and the single-scattering albedo, optical depth, and single-scattering phase function of Pluto’s haze. The haze particles are small, with best-fit sizes in the range of ∼0.41–1.14 μm. We find that Pluto’s haze is more similar to that of Titan, rich in organic compounds and highly forward scattering, than that of Triton. With organic compounds and a likely subsurface water ocean, Pluto may harbor sustainable habitable environments. Our model, which includes the coherent backscatter effect, fits the anomalously large opposition surge recently discovered on Pluto.

来自“新视野”的冥王星的观测与先前的地面观测相结合，并适合基于钱德拉塞卡（Chandrasekhar）的行星问题和哈普（Hapke）理论的辐射传输模型，以同时导出矮行星表面和大气的物理特性。我们导出了表面的宏观粗糙度，单散射反照率和方向散射特性，以及冥王星雾度的单散射反照率，光学深度和单散射相位函数。雾度颗粒小，随着~0.41-1.14的范围最佳拟合尺寸μ米 我们发现，冥王星的雾度比特里顿的雾度更类似于泰坦，它富含有机化合物并且高度向前散射。由于有机化合物和可能的地下水海洋，冥王星可能拥有可持续的宜居环境。我们的模型包括相干反向散射效应，适合最近在冥王星上发现的异常大的反冲浪潮。