Bibcode
Rizos, Juan; de Leon, Julia; Licandro, Javier; Campins, Humberto; System IAC, Solar
Bibliographical reference
American Astronomical Society, DPS meeting #50, id.312.18
Advertised on:
10
2018
Citations
0
Refereed citations
0
Description
NASA's OSIRIS-REx mission is currently on its way to the asteroid
(101955) Bennu. Bennu is a primitive asteroid, characterized by a dark
surface composed mainly of carbon compounds, organic, and silicates
altered by the presence of water. In addition, due to its proximity to
the Earth, is classified as a potentially dangerous asteroid (PHA).
Among several instruments, the mission OSIRIS-REx has OCAMS, a set of
three cameras (PolyCam, MapCam and SamCam) with different configurations
to capture images in the visible and map the entire surface.
Specifically, MapCam has a set of four filters centered at 0.44, 0.55,
0.70 and 0.85 microns respectively, with which it will be possible make
color maps. The last three filters are particularly well designed for
detect the absorption band at 0.7 microns produced by the silicates
altered by the presence of liquid water (phyllosilicates). In addition,
color maps will make it possible to detect the existence of hydrated
minerals on the surface of Bennu more quickly and with much better
spatial resolution than the spectra provided by the OVIRS instrument
(infrared spectrograph), also aboard the ship. This communication
presents the results obtained from the analysis of the images of the
asteroid (1) Ceres taken by the Framing Camera of NASA's Dawn mission.
This camera has a set of 7 filters in the visible range, so the
techniques used for the spectral clustering analysis of the (1) Ceres
images will serve as preparation for the analysis of the Bennu images
obtained with OCAMS.