قالب وردپرس درنا توس
Home / Science / The NASA spacecraft OSIRIS-REx takes a stunning photo of Asteroid Bennu from just 0.6km away

The NASA spacecraft OSIRIS-REx takes a stunning photo of Asteroid Bennu from just 0.6km away



The asteroid Bennu, seen here after inserting OSIRIS-REx into "Orbital B".
Photo: NASA / Goddard / University of Arizona / Lockheed Martin (https://www.asteroidmission.org/)[19659004<TheOSIRISRExspacecraftofNASAwithasteroidscanwascurrentlytheonlyoneofthetinyburiedasteroids101955BennuinPositionhasbeengivenamostaccuraterecordyetnoAsteroidsurface

NASA has already published photos of OSIRIS-REx, the taken on 17 January 2019 with the NavCam 1 navigation camera from a distance of approximately 1.6 kilometers above the surface. Now, according to Verge, NASA has released a photograph taken of Bennu from a circular orbit of just 690 meters on June 13, described as the narrowest orbit a spaceship ever had for a body in the solar system.

See the Whole:

From the Publication:

This image of the asteroid Bennu was captured on June 13, 2019, shortly after NASA's spacecraft OSIRIS-REx made its second orbiting maneuver. From the starship's orbit, half of Bennu is in sunlight and the other half in shadow. Bennu's largest boulder also juts out from the southern hemisphere. The image was taken from a distance of 690 m above the surface of the asteroid with NavCam 1, one of three navigation cameras that make up the TAGCAMS system (Touch-and-Go Camera System) of the spacecraft. At this distance, details with a diameter of only 0.5 m can be resolved in the center of the picture.

OSIRIS-REx (Origins, Spectral Interpretation, Resource Identification and Security – Regolith Explorer) was launched in 2016 and 2007 It arrived in Bennu in December 2018. Equipped with five data acquisition instruments, NASA's first mission is to return with samples of an asteroid 520 meters in diameter, making it the smallest object ever orbited by a spaceship. Earlier this year, NASA scientists found that Bennu's surface contained both spitting and fissured material, making it difficult to sample.

According to mission scientists, OSIRIS-REx will remain in its current orbit until mid-August. Instruments such as the OSIRIS REx Laser Altimeter (OLA) will be used to create a complete terrain map, PolyCam will be used to create a "high resolution global mosaic" and OSIRIS-REx thermal emission spectrometer uses (OTES) and the REgolith X-ray Imaging Spectrometer (REXIS) to "create global maps in the infrared and X-ray range". This is necessary to select the best landing site and minimize the likelihood of errors.

After that OSIRIS-REx will reach an orbit of about 1.3 km. Sampling with an instrument called TAGSAM (Touch-and-Go Sample Acquisition Mechanism) is currently scheduled for summer 2020, returning to Earth for 2023.

Japan's similar Hayabusa2 mission successfully sampled in February 2019 with a tantalum bullet collected from the asteroid Ryugu and later blown up a hole in it with an explosive device to carry out another test run. However, this second round has not yet taken place and there is a limited schedule before Ryugu approaches the sun too close to pass the mission.

[NASA / Goddard / University of Arizona / Lockheed Martin]


Source link