Analysis of phase curve of 67P/Churyumov-Gerasimenko at small phase angles using Rosetta-OSIRIS images
Abstract
For our study we analyze a set of OSIRIS NAC images from the nucleus of comet 67P, acquired on 09-10th April 2016, in the F84 (480.7 nm), F82 (649.2 nm), and F88 (743.7 nm) filters, spanning the phase angle range from 0.2° to 8.0°. At this small phase angle range, the opposition effect manifests itself as a rapid increase in the surface phase function with decreasing phase angle. We built a surface phase function based on this images covering the Ash-Khepry-Imhotep region of comet 67P. Our goal is to explore the photometric properties of the comet's surface together with the physical mechanisms that play a role in the Opposition effect.
- Publication:
-
European Planetary Science Congress
- Pub Date:
- September 2018
- Bibcode:
- 2018EPSC...12..618M