Search Publications

A comparison of multiple Rosetta data sets and 3D model calculations of 67P/Churyumov-Gerasimenko coma around equinox (May 2015)

Jorda, L.; Altwegg, K.; Kührt, E. +23 more

We have used the latest available shape model for gas and dust simulations of the inner coma of comet 67P/Churyumov-Gerasimenko for the period around May 2015 (equinox). We compare results from a purely insolation-driven model with a complementary set of observations made by ROSINA, VIRTIS, MIRO, and OSIRIS within the same period. The observations…

The evolution of gently sloping mantled deposits on Comet 67P/Churyumov-Gerasimenko

Kossacki, Konrad J.; Jasiak, Aleksander

We investigated the role of local illumination and material parameters that can be important in determining evolution of a gently inclined slopes on the nucleus of comet. The considered material parameters are: size of ice grains, agglomerates and pores in-between, thermal conductivity of dust mantle, size of pores in the dust mantle, presence of …

Inertia parameter statistics of an uncertain small body shape

Bercovici, Benjamin; McMahon, Jay W.

This paper proposes an analytical formulation of the inertia parameters of Bezier shapes of arbitrary order. Bezier shapes can represent classical polyhedra as well as higher-order surface elements within the same framework. This formulation is linearized so as to yield the expressions of the first variation in the inertia properties of interest. …

Global spectrophotometric properties of Asteroid (21) Lutetia using Rosetta-OSIRIS images

Masoumzadeh, N.; Boehnhardt, H.

We present a spectrophotometric analysis of the surface areas of asteroid (21) Lutetia that were imaged during the Rosetta flyby on July 2010 by the OSIRIS camera in the wavelength range 269 to 989 nm. A spectral slope change with respect to phase angle is found and interpreted as being due to areal diversity of Lutetia's surface. We applied Minna…