First images of the asteroid Bennu obtained by NASA's OSIRIS-REx probe

First images of the asteroid Bennu obtained by NASA's OSIRIS-REx probe https://i2.wp.com/www.eresviral.com/wp-content/uploads/2018/11/Primeras-imágenes-del-asteroide-Bennu-obtenidas-por-la-sonda-OSIRIS-REx-de-la-NASA.jpg?fit=231%2C146&ssl=1

First images of the asteroid Bennu obtained by NASA's OSIRIS-REx probe





First images of the asteroid Bennu obtained by NASA's OSIRIS-REx probe





The launch of the NASA OSIRIS-REx space probe took place on September 8, 2016. Since then, the spacecraft has been traveling through space for two years to reach its goal, the primitive-type asteroid Bennu, in October 2018. The first images have begun to be obtained using one of the three cameras that carry the ship (PolyCam), at a distance of the asteroid of about 330 kilometers. During the short minute elapsed between obtaining the first and the last image of a total of eight exposures, the asteroid turned 1.2 degrees. The scientific team of the mission has used a superresolution algorithm to combine these eight images and produce one of better quality. Although Bennu occupies only 100 pixels in the detector, you can already see the first structures on its surface, such as the presence of rocks of considerable size.



These first snapshots of Bennu present an astonishing similarity to those that are getting the JAXA probe Hayabusa2 from another primitive asteroid, Ryugu. "The fact that the Japanese mission has arrived a little earlier to its objective is extremely interesting for us, since we can interpret our results and compare them with those obtained by another mission almost in real time," explains Julia de León.







Image of the asteroid Bennu created from eight individual images obtained on October 29, 2018 by the space probe OSIRIS-REx, at a distance of 330 km. (Credit: NASA / Goddard / University of Arizona)



The IAC team, which is part of the Image Processing Working Group (IPWG) of the mission, includes Juan Luis Rizos García, who is doing his doctoral thesis using the data taken by OSIRIS-REx. "The first images that capture the asteroid in its entirety are used to perform a significant number of calibrations," says Rizos García. These are fundamental to interpreting the results obtained from images of much higher resolution and obtained with different filters. "



"In December 2018 we will begin to obtain images with MapCam, another of the mission cameras, using color filters. This will allow us to generate color maps and study the geographical distribution of different mineral compounds, including silicates altered by the presence of water, "adds Javier Licandro. The studies carried out by this team will help to choose the area of ​​the asteroid surface where the material that will be brought back to Earth in 2023 will be collected for analysis. (Source: IAC)



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