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OSIRIS-REx
 
https://www.asteroidmission.org/20190321-rocky-south-pole/
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Bennu’s Rocky South Pole

This image shows a region near asteroid Bennu’s south pole. It was taken on March 21 by the PolyCam camera on NASA’s OSIRIS-REx spacecraft from a distance of 2.2 miles (3.5 km). The field of view is 166 ft (50 m). For scale, the pear-shaped, light-colored boulder in the lower left quadrant of the image is about 8 ft (2.4 m) wide, which is the same length as a horse. The image was obtained during Flyby 3 of the mission’s Detailed Survey: Baseball Diamond phase. When the image was taken, the spacecraft was flying over the equator, panning to the south.

Date Taken: March 21, 2019

Instrument Used: OCAMS (PolyCam)

Credit: NASA/Goddard/University of Arizona
 
https://www.asteroidmission.org/20190321-polycam-boulder-formations-near-equator/
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Boulder Formations Near Bennu’s Equator

This image shows a small region near asteroid Bennu’s equator that contains boulders of differing compositions. It was taken by the PolyCam camera on NASA’s OSIRIS-REx spacecraft on March 21 from a distance of 2.2 miles (3.5 km). The field of view is 159 ft (48.4 m). For scale, the large, light-colored boulder in the upper right of the image is 31 ft (9.5 m) wide, which is about length of a city bus. The image was obtained during Flyby 3 of the mission’s Detailed Survey: Baseball Diamond phase. When the image was taken, the spacecraft was over the equator, pointing PolyCam slightly to the south.

Date Taken: March 21, 2019

Instrument Used: OCAMS (PolyCam)

Credit: NASA/Goddard/University of Arizona
 
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NASA's OSIRIS-REx‏Подлинная учетная запись @OSIRISREx 25 мин. назад

More on Local Solar Time ...

 
https://www.asteroidmission.org/20190321-in-the-shadow-of-boulder-no-1/
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In the Shadow of Boulder No. 1

This image shows the late-morning shadow cast by the largest boulder on asteroid Bennu. It was taken by the PolyCam camera on NASA’s OSIRIS-REx spacecraft on March 21 from a distance of 2.2 miles (3.5 km). The field of view is 163 ft (49.7 m). For scale, the smaller, square light-colored rock on the left is 18 ft (5.5 m) wide, which is about the length of a full-size pickup truck. The image was obtained during Flyby 3 of the mission’s Detailed Survey: Baseball Diamond phase. When the image was taken, the spacecraft was over the equator, pointing PolyCam south.

Date Taken: March 21, 2019

Instrument Used: OCAMS (PolyCam)

Credit: NASA/Goddard/University of Arizona
 
https://www.asteroidmission.org/20190328-equatorial-crater-detail/
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Crater Detail near Bennu’s Equator

This image shows a portion of a crater near asteroid Bennu’s equator. It was taken by the PolyCam camera on NASA’s OSIRIS-REx spacecraft on March 28 from a distance of 2.2 miles (3.5 km). The field of view is 162 ft (49.4 m). For scale, the bright, thin rock face in the upper left quadrant is 8 ft (2.4 m) long, which is about the same length as a horse. The image was obtained during Flyby 4A of the mission’s Detailed Survey: Baseball Diamond phase. When the image was taken, the spacecraft was over the southern hemisphere, pointing PolyCam north.

Date Taken: March 28, 2019

Instrument Used: OCAMS (PolyCam)

Credit: NASA/Goddard/University of Arizona
 
https://www.asteroidmission.org/20190328-rocks-on-a-boulder/
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Rocks on a Boulder in Bennu’s Southern Hemisphere

This image shows several smaller rocks lying on a boulder in asteroid Bennu’s southern hemisphere. It was taken by the PolyCam camera on NASA’s OSIRIS-REx spacecraft on March 28 from a distance of 2.1 miles (3.4 km). The field of view is 154 ft (46.8 m). For scale, the largest rock on the boulder is 9 ft (2.6 m) wide, which is about the same length as a pool table. The image was obtained during Flyby 4A of the mission’s Detailed Survey: Baseball Diamond phase. When the image was taken, the spacecraft was over the southern hemisphere, pointing PolyCam slightly to the south.

Date Taken: March 28, 2019

Instrument Used: OCAMS (PolyCam)

Credit: NASA/Goddard/University of Arizona
 
https://www.asteroidmission.org/20190328-southern-limb-shadows/
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Shadows on Bennu’s Southern Limb

This image shows the southern limb of asteroid Bennu. It was taken by the PolyCam camera on NASA’s OSIRIS-REx spacecraft on March 28 from a distance of 2.1 miles (3.4 km). The field of view is 157 ft (48 m). For scale, the rectangular-shaped, light-colored rock in the upper right corner is 7 ft (2.1 m) long, which is about the same length as a fishing pole. The image was obtained during Flyby 4A of the mission’s Detailed Survey: Baseball Diamond phase. When the image was taken, the spacecraft was over the southern hemisphere, pointing PolyCam toward the south pole.

Date Taken: March 28, 2019

Instrument Used: OCAMS (PolyCam)

Credit: NASA/Goddard/University of Arizona
 
https://www.asteroidmission.org/20190328-dark-region/
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Dark Region on Bennu

This image shows a small portion of a very large outcrop in Bennu’s southern hemisphere. This outcrop contains some of the darkest material on the asteroid. The image was taken by the PolyCam camera on NASA’s OSIRIS-REx spacecraft on March 28 from a distance of 2.2 miles (3.5 km). The field of view is 157 ft (48 m). For scale, the squarish, light-colored rock to the left of the image’s center is 6 ft (1.8 m) long, which is about the same height as a man. The image was obtained during Flyby 4A of the mission’s Detailed Survey: Baseball Diamond phase. When the image was taken, the spacecraft was over the southern hemisphere, pointing PolyCam slightly northward.

Date Taken: March 28, 2019

Instrument Used: OCAMS (PolyCam)

Credit: NASA/Goddard/University of Arizona

 
https://www.asteroidmission.org/20190328-polycam-northern-view/
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View of the North from Bennu’s Southern Hemisphere

This image provides a steeply angled view of a region of asteroid Bennu’s equator and northern hemisphere. It was taken by the PolyCam camera on NASA’s OSIRIS-REx spacecraft on March 28 from a distance of 2.2 miles (3.6 km). The field of view is 170 ft (52 m) wide. For scale, the largest boulder in the upper left corner of the image is 48 ft (14.5 m) wide, which is about the length of a semi-truck trailer. The image was obtained during Flyby 4A of the mission’s Detailed Survey: Baseball Diamond phase. When the image was taken, the spacecraft was over the southern hemisphere, pointing PolyCam up toward the far north.

Date Taken: March 28, 2019

Instrument Used: OCAMS (PolyCam)

Credit: NASA/Goddard/University of Arizona
 
https://www.asteroidmission.org/20190329-northern-sample-site-candidate/
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Northern Candidate Sample Site on Asteroid Bennu

This image shows one of the candidate sites for sample collection on asteroid Bennu. The 71 ft (21.6 m) wide crater on Bennu’s northern hemisphere appears to contain fine-grained material and is relatively free of hazards to the spacecraft. Although it is significantly smaller than the OSIRIS-REx mission’s original plans for a 164 ft (50 m) wide sampling region, Bennu’s high density of boulders means the team must prepare to sample a markedly smaller area. The image was taken by the PolyCam camera on NASA’s OSIRIS-REx spacecraft on March 29 from a distance of 2.2 miles (3.6 km). The field of view is 165 ft (50.3 m). For scale, the light-colored rock that looks like a spear tip in the crater is 16 ft (4.8 m) long, which is about the same length as a box truck. The image was obtained during Flyby 4B of the mission’s Detailed Survey: Baseball Diamond phase. When the image was taken, the spacecraft was over the northern hemisphere, pointing PolyCam slightly south.

Date Taken: March 29, 2019

Instrument Used: OCAMS (PolyCam)

Credit: NASA/Goddard/University of Arizona

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NASA's OSIRIS-REx‏Подлинная учетная запись @OSIRISREx 6 мин. назад

The team is right now combing through all of the Baseball Diamond phase images, looking for the 12 best possible sites for touchdown and sampling. In mid-July, we'll down-select to the final two -- a primary and back-up site
 
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OSIRIS-REx’s Two Spectrometers

NASA Video

Опубликовано: 3 мая 2019 г.

Dr. Amy Simon, the OVIRS deputy instrument scientist at NASA's Goddard Space Flight Center in Greenbelt, Maryland, goes in-depth about the different spectrometers used in the mission. The Origins, Spectral Interpretation, Resource Identification, Security-Regolith Explorer (OSIRIS-REx) spacecraft launched Sept. 8, 2016, and began orbiting asteroid Bennu on Dec. 31, 2018. Its primary science objective is to study Bennu and collect a sample for return to Earth in 2023. Bennu is a carbon-rich asteroid that records the earliest history of our solar system, and which may contain the raw ingredients of life.
https://www.youtube.com/watch?v=HOWy7EY4sHs
Загрузка плеера
(1:02)
 
https://www.asteroidmission.org/20190329-dark-boulder/
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Dark Boulder near Asteroid Bennu’s Equator

In the lower left of this image is one of the darkest boulders on asteroid Bennu. The boulder, located near the asteroid’s equator, has an albedo of about 3.3%. Bennu’s global average albedo is 4.4%, which is still about as dark as charcoal. This image was taken by the PolyCam camera on NASA’s OSIRIS-REx spacecraft on March 29 from a distance of 2.2 miles (3.6 km). The field of view is 165 ft (50.4m) wide. For scale, the light-colored rock sitting on the dark boulder is 6.2 ft (1.9 m) wide, which is about the same height as a person. The image was obtained during Flyby 4B of the mission’s Detailed Survey: Baseball Diamond phase. When the image was taken, the spacecraft was over the northern hemisphere, pointing PolyCam down toward the south.

Date Taken: March 29, 2019

Instrument Used: OCAMS (PolyCam)

Credit: NASA/Goddard/University of Arizona
 
https://www.asteroidmission.org/bennu2/
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Bennu Thermal Map (Derived from Approach Data)

This global map demonstrates the distribution of temperatures across the surface of asteroid Bennu. It is a model created to fit the thermal emission data collected by the OTES and OVIRS spectrometers on NASA’s OSIRIS-REx spacecraft during the spacecraft’s November 2018 approach toward the asteroid. The wide range of temperatures on the surface — from 200 K to 350 K (-99.67 °F to 170.33 °F, or -73.15 °C to 76.85 °C) over a distance of 820 ft (250 m) — is explained by the lack of an atmosphere on Bennu. On Earth, the planet’s atmosphere works to distribute heat around the globe, but, for a planetary body without an atmosphere, the temperature of any given region is much more affected by the amount of direct sunlight it receives.

Date Taken: November 2018

Instrument Used: OTES; OVIRS

Credit: NASA/Goddard/University of Arizona/The Open University/University of Tennessee
 
https://www.asteroidmission.org/20190329-benben-north/
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North Side of Bennu’s Boulder No. 1

his image shows a view of the north side of asteroid Bennu’s largest boulder. It was taken by the PolyCam camera on NASA’s OSIRIS-REx spacecraft on March 29 from a distance of 2.2 miles (3.6 km). The field of view is 170 ft (51.7 m) wide. For scale, the height of the boulder is 71 ft (21.7 m), which is about the same height as the White House. The image was obtained during Flyby 4B of the mission’s Detailed Survey: Baseball Diamond phase. When the image was taken, the spacecraft was over the northern hemisphere, pointing PolyCam down toward the south.

Date Taken: March 29, 2019

Instrument Used: OCAMS (PolyCam)

Credit: NASA/Goddard/University of Arizona
 
https://www.asteroidmission.org/20190329-sorted-stones/
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Graduated Boulder Sizes

This image shows a rocky patch in the northern hemisphere of asteroid Bennu where the rocks and boulders are situated by size. It was taken by the PolyCam camera on NASA’s OSIRIS-REx spacecraft on March 29 from a distance of 2.1 miles (3.4 km). The field of view is 157 ft (48 m). For scale, the little rock sitting on the boulder in the lower left corner is 8 ft (2.5 m) wide, which is about the same length as a horse. The image was obtained during Flyby 4B of the mission’s Detailed Survey: Baseball Diamond phase. When the image was taken, the spacecraft was over the northern hemisphere, pointing PolyCam slightly to the south.

Date Taken: March 29, 2019

Instrument Used: OCAMS (PolyCam)

Credit: NASA/Goddard/University of Arizona
 
https://www.asteroidmission.org/20190329-north-pole/
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Shadows on Bennu’s Northern Limb

This image shows a region of asteroid Bennu’s north pole. It was taken by the PolyCam camera on NASA’s OSIRIS-REx spacecraft on March 29 from a distance of 2.1 miles (3.4 km). The field of view is 158 ft (48.2 m). For scale, the brightest rock in the image, to the right of the image’s center, is 4 ft (1.1 m) wide, which is about the size of a dining room table. The image was obtained during Flyby 4B of the mission’s Detailed Survey: Baseball Diamond phase. When the image was taken, the spacecraft was over the northern hemisphere, pointing PolyCam toward the north pole.

Date Taken: March 29, 2019

Instrument Used: OCAMS (PolyCam)

Credit: NASA/Goddard/University of Arizona
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4 мин. назад

 
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NASA's OSIRIS-REx‏Подлинная учетная запись @OSIRISREx 19 мин. назад

This is the imaging pattern for Flyby 5A&B of Baseball Diamond phase. I'll be sharing images fr om this flyby next. For FB5-A, I was over the northern hemisphere at 40° lat., imaging west, center and east from the north pole down to the equator.




19 мин. назад

I'm giving you a heads up now that images taken from over the asteroid's northern hemisphere while looking down appear all sorts of wonky to an Earth brain. The images are oriented so that Bennu's north is up, but feel free to flip them around to wh ere they feel more comfortable.
 
https://www.asteroidmission.org/20190404-shark-teeth/
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Equatorial Boulder Region

This image shows a region near asteroid Bennu’s equator that contains many large boulders. It was taken by the PolyCam camera on NASA’s OSIRIS-REx spacecraft on April 4 from a distance of 2.9 miles (4.6 km). The field of view is 213 ft (64.9 m). For scale, the triangular boulder on the horizon is 30 ft (9.2 m) high, which is almost as tall as the tail of a C-130 Hercules aircraft. The image was obtained during Flyby 5A of the mission’s Detailed Survey: Baseball Diamond phase. When the image was taken, the spacecraft was over the northern hemisphere, pointing PolyCam down and west toward the equator.

Date Taken: April 4, 2019

Instrument Used: OCAMS (PolyCam)

Credit: NASA/Goddard/University of Arizona
 
https://www.asteroidmission.org/20190404-prime-meridian-boulder/
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Boulder Marking Bennu’s Prime Meridian

This image shows a portion of the boulder that marks Bennu’s prime meridian. It was taken by the PolyCam camera on NASA’s OSIRIS-REx spacecraft on April 4 from a distance of 3 miles (4.7 km). The field of view is 216 ft (65.7 m). For scale, the highest point visible on the prime meridian boulder is 65 ft (20 m) tall, which is the same height as Delicate Arch in Arches National Park in Utah. The image was obtained during Flyby 5A of the mission’s Detailed Survey: Baseball Diamond phase. When the image was taken, the spacecraft was over the northern hemisphere, pointing PolyCam east and downward toward the southern hemisphere.

Date Taken: April 4, 2019

Instrument Used: OCAMS (PolyCam)

Credit: NASA/Goddard/University of Arizona
"Камешек" для сравнения:
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NASA's OSIRIS-REx‏Подлинная учетная запись @OSIRISREx 34 мин. назад
...
 
https://www.asteroidmission.org/20190404-anvil/
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Long Boulder and Shadow

This image shows the long shadow of an oddly-shaped boulder located in asteroid Bennu’s northern hemisphere. It was taken by the PolyCam camera on NASA’s OSIRIS-REx spacecraft on April 4 from a distance of 3 miles (4.9 km). The field of view is 226 ft (69 m). For scale, the boulder is 62 ft (18.9 m) long, which is about the length of a bowling alley lane. The image was obtained during Flyby 5A of the mission’s Detailed Survey: Baseball Diamond phase. When the image was taken, the spacecraft was over the northern hemisphere, pointing PolyCam due west.

Date Taken: April 4, 2019

Instrument Used: OCAMS (PolyCam)

Credit: NASA/Goddard/University of Arizona
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