Fundación Galileo Galilei - INAF Telescopio Nazionale Galileo 28°45'14.4N 17°53'20.6W 2387.2m A.S.L.

Seminars at FGG

Analysis of asteroid Steins resolved surface from Rosetta spacecraft

Speaker: Sara Magrin (dipartimento di Astronomia, Padua University)

Date and time: 2009-10-21 11:00

n September 5th 2008 the Rosetta spacecraft had a fly-by with the main belt asteroid Steins, at a distance of about 800 Km from the body. OSIRIS WAC and NAC (Wide Angle and Narrow Angle Cameras)observed the 5 Km sized object at different phase angles with different filters. To analyze the possible color variegation of the surface of Steins we developed an IDL tool to produce pixel per pixel (rough) spectra, by using values of albedo in three different filters at a time. The results of this analysis performed on the data obtained by the NAC camera will be shown.