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OSIRIS-REx
 
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NASA's OSIRIS-REx‏Подлинная учетная запись @OSIRISREx 4 авг. назад

Woot! I'm now less than one million miles (1.4 million kilometers) away from #asteroid Bennu.
#WhereIsOSIRISREx

More on my progress: http://bit.ly/WhereIsOREX

https://www.asteroidmission.org/wp-content/uploads/2018/09/Digital-Readout-9-3-18-768x262.png
 
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NASA's OSIRIS-REx‏Подлинная учетная запись @OSIRISREx 3 ч. назад

Today, I begin scanning the area around asteroid Bennu for dust plumes! #SeizeTheData

More on what I'll be up to through the rest of 2018 and beyond: http://bit.ly/AsteroidOps

 
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NASA's OSIRIS-REx‏Подлинная учетная запись @OSIRISREx 53 мин. назад

This week, my range to #asteroid Bennu will dip below the 1 million kilometer mark! #WhereIsOSIRISREx More on my progress: http://bit.ly/WhereIsOREX

https://www.asteroidmission.org/wp-content/uploads/2018/09/Digital-Readout-9-10-18-768x262.png
 
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REXIS‏ @REXIS_MIT 15 сент.

We're open for business! Our radiation cover is open and we're ready for some real data! Stay tuned for more news on the REXIS first light!
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NASA's OSIRIS-REx‏Подлинная учетная запись @OSIRISREx 14 сент.

Fire Frangibolt! Roger that.

This morning the Frangibolt on the flight cover of REXIS – my student-built x-ray spectrometer that will map elements on Bennu’s surface – fired as planned and opened the instrument’s cover.

@REXIS_MIT now has a clear view of space!

 
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NASA's OSIRIS-REx‏Подлинная учетная запись @OSIRISREx 1 ч. назад

Milestone alert: I now have less than 200 million km (123 million miles) to travel before my rendezvous with #asteroid Bennu! #WhereIsOSIRISREx More about my progress on the journey: http://bit.ly/WhereIsOREX

https://www.asteroidmission.org/wp-content/uploads/2018/09/Digital-Readout-9-17-18-768x262.png
 
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NASA's OSIRIS-REx‏Подлинная учетная запись @OSIRISREx 6 мин. назад

Hellloooo, Earth! At my current distance -- just under 126 million km (78 million miles) -- it takes 14 minutes round-trip to communicate with the team on the ground. More on my progress #ToBennuAndBack: http://bit.ly/WhereIsOREX

https://www.asteroidmission.org/wp-content/uploads/2018/09/Orbit-Diagram-9-24-18-768x611.png

https://www.asteroidmission.org/wp-content/uploads/2018/09/Digital-Readout-9-24-18-768x262.png
 
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MapCam Images Bennu During Dust Plume Search
This MapCam image of the space surrounding asteroid Bennu was taken on Sept. 12, 2018, during the OSIRIS-REx mission’s Dust Plume Search observation campaign. Bennu, circled in green, is approximately 621 thousand miles (1 million km) from the spacecraft. The image was created by coadding 64 ten-second exposures.
The mission team conducted the search to determine whether dust and gas plumes could be detected originating from Bennu’s surface. If present, these plumes could present a hazard to the spacecraft during the asteroid proximity operations, as well as provide clues to possible cometary activity on the asteroid. The images from the search did not indicate any dust from Bennu. A second dust plume search will be conducted later in the mission while the spacecraft is operating around Bennu.
Date Taken: Sept. 12, 2018
Instrument Used: OCAMS (MapCam)
Credit: NASA/Goddard/University of Arizona

https://www.asteroidmission.org/mapcamdustsearch-2/
 
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Dante Lauretta‏ @DSLauretta 44 мин. назад

The @OSIRISREx spacecraft will execute Asteroid Approach Maneuver 1 today. Total delta-V = 351 m/s (slowing us down by 785 miles per hour)!
 
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NASA's OSIRIS-REx‏Подлинная учетная запись @OSIRISREx 8 мин. назад

Today I'm executing Asteroid Approach Maneuver-1, which is the first in a series of braking maneuvers that will slow my speed as I approach asteroid Bennu. My cruising speed before AAM-1 is about 1,100 miles per hour (490 meters per second).
http://bit.ly/WhereIsOREX

 
https://www.asteroidmission.org/?latest-news=nasas-osiris-rex-executes-first-asteroid-approach-maneuver
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NASA’s OSIRIS-REx Executes First Asteroid Approach Maneuver
October 1, 2018 - NASA’s OSIRIS-REx spacecraft executed its first Asteroid Approach Maneuver (AAM-1) today putting it on course for its scheduled arrival at the asteroid Bennu in December.


Artist’s conception of NASA’s OSIRIS-REx spacecraft during a burn of its main engine. Credit: University of Arizona

The spacecraft’s main engine thrusters fired in a braking maneuver designed to slow the spacecraft’s speed relative to Bennu from approximately 1,100 mph (491 m/sec) to 313 mph (140 m/sec). The mission team will continue to examine telemetry and tracking data as they become available and will have more information on the results of the maneuver over the next week.

During the next six weeks, the OSIRIS-REx spacecraft will continue executing the series of asteroid approach maneuvers designed to fly the spacecraft through a precise corridor during its final slow approach to Bennu. The last of these, AAM-4, scheduled for November 12, will adjust the spacecraft’s trajectory to arrive at a position 12 miles (20 km) from Bennu on December 3. After arrival, the spacecraft will initiate asteroid proximity operations by performing a series of fly-bys over Bennu’s poles and equator.
 
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Dante Lauretta‏ @DSLauretta 1 ч. назад

Asteroid Approach Maneuver 1 is a success! It was a 351 m/s burn of 11 min 15 s on the main engines. One more main engine burn remains for @OSIRISREx in its Approach phase, on Oct 15, followed by 2 smaller burns on the TCM thrusters. This was a major mission milestone!
 
https://www.asteroidmission.org/polycam_opnav_2018-annotated-final/
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Bennu Brightening as OSIRIS-REx Approaches

This processed and cropped set of images shows Bennu (in the center of the frame) from the perspective of the OSIRIS-REx spacecraft as it approaches the asteroid. During the period between August 17 and October 1, the spacecraft’s PolyCam imager obtained this series of 20 four-second exposures every Monday, Wednesday, and Friday as part of the mission’s optical navigation campaign.

From the first to the last image, the spacecraft’s range to Bennu decreased from 2.2 million km to 192,000 km, and Bennu brightened from approximately magnitude 13 to magnitude 8.8 from the spacecraft’s perspective.

Date Taken: Aug. 17 - Oct. 1, 2018

Instrument Used: PolyCam

Credit: NASA/Goddard/University of Arizona
 
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NASA's OSIRIS-REx‏Подлинная учетная запись @OSIRISREx 4 ч. назад

With a little over 55 days left until my scheduled arrival at Bennu, my range to the #asteroid is now less than 100,000 km (62,000 miles). #WhereIsOSIRISREx

More on my recent activities: http://bit.ly/WhereIsOREX

https://www.asteroidmission.org/wp-content/uploads/2018/10/Orbit-Diagram-10-08-18-768x611.png


https://www.asteroidmission.org/wp-content/uploads/2018/10/Digital-Readout-10-08-18-768x262.png
 
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LIVE - "10 minutes about OSIRIS-REx mission"

Canadian Space Agency

Трансляция началась 3 часа назад

2018-10-09 - For World Space Week, we will present you "10 minutes about OSIRIS-REx mission" with CSA expert Tim Haltigin.
https://www.youtube.com/watch?v=zrbKDzoeaM8 (13:14)
 
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NASA's OSIRIS-REx‏Подлинная учетная запись @OSIRISREx 3 ч. назад

Almost ready for my second Asteroid Approach Maneuver (AAM-2)! Today is the second time I'll put on the brakes as I approach #asteroid Bennu, slowing my speed from about 313 to about 11.8 miles per hour.
#WeBrakeForAsteroids
 
https://www.asteroidmission.org/?latest-news=nasas-osiris-rex-executes-second-asteroid-approach-maneuver
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NASA’s OSIRIS-REx Executes Second Asteroid Approach Maneuver

October 15, 2018 - NASA’s OSIRIS-REx spacecraft executed its second Asteroid Approach Maneuver (AAM-2) today. The spacecraft’s main engine thrusters fired in a braking maneuver designed to slow the spacecraft’s speed relative to Bennu from 315 mph (141 m/sec) to 11.8 mph (5.2 m/sec). Likewise, the spacecraft’s approach speed dropped from nearly 7,580 miles (12,200 km) to 280 miles (450 km) per day.


Artist’s conception of NASA’s OSIRIS-REx spacecraft during a burn of its main engine. Credit: University of Arizona

The mission team will continue to examine telemetry and tracking data and will have more information over the next week. This burn marked the last planned use of the spacecraft’s main engines prior to OSIRIS-REx’s departure from Bennu in March 2021.

The OSIRIS-REx spacecraft is in the midst of a six-week series of maneuvers designed to fly the spacecraft through a precise corridor toward Bennu. AAM-1, which executed on Oct. 1, slowed the spacecraft by 785.831 mph (351.298 m/sec) and consumed 532.4 pounds (241.5 kilograms) of fuel. AAM-3 is schedule for October 29. The last of the burns, AAM-4, is scheduled for November 12 and will adjust the spacecraft’s trajectory to arrive at a position 12 miles (20 km) from Bennu on December 3. After arrival, the spacecraft will perform a series of fly-bys over Bennu’s poles and equator.
 
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OSIRIS REx Approach Media Telecon

NASA Video

Опубликовано: 18 окт. 2018 г.
https://www.youtube.com/watch?v=5crcyGEEloc (55:46)
 
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NASA's OSIRIS-REx‏Подлинная учетная запись @OSIRISREx 16 ч. назад

1, 2, 3, Bennu! Earlier this week, I captured these images of my favorite asteroid growing ever larger -- from about 1 pixel to nearly 4 pixels in PolyCam's field of view -- as I continue to approach Bennu.

More details: http://bit.ly/2PI0Eky


(video 0:02)
https://www.asteroidmission.org/bennu-oct-2018-pixel-zoom/
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1, 2, 3 Bennu!

This set of PolyCam images shows Bennu getting larger in the camera’s field of view as the OSIRIS-REx spacecraft continues its approach toward the asteroid. The images represent Bennu at 1.09 pixels, 1.71 pixels and 3.75 pixels, and were obtained on Oct. 13, 14 and 15, respectively. From the first to the last image, OSIRIS-REx’s range to Bennu decreased from around 20,720 miles (33,350 km) to around 6,060 miles (9,750 km). The images are cropped and processed.

Image 1:
Date and Time: 10/13/2018, 09:23 UTC
Range to Target: 33,360 km
Phase Angle: 61.5°
Bennu’s Distance from the Sun: 1.104 AU
Width of Target: 1.093 pixels

Image 2:
Date and Time: 10/14/2018, 09:23 UTC
Range to Target: 21,347 km
Phase Angle: 58.3°
Bennu’s Distance from the Sun: 1.101 AU
Width of Target: 1.71 pixels

Image 3:
Date and Time: 10/15/2018, 09:23 UTC
Range to Target: 9,736 km
Phase Angle: 45.5°
Bennu’s Distance from the Sun: 1.097 AU
Width of Target: 3.75 pixels

Date Taken: Oct. 13 -15, 2018

Instrument Used: OCAMS (PolyCam)

Credit: NASA/Goddard/University of Arizona
 
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PolyCam Natural Satellite Search Pattern

OSIRIS-REx Mission

Дата загрузки: 17 окт. 2018 г.

A simulation showing one of the planned image mosaics that will be captured by OSIRIS-REx's PolyCam camera during the spacecraft's search for natural satellites (small moons) around Bennu in Fall 2018. The asteroid is represented by the green dot in the center. The blue square indicates the camera's field of view, and the large green circle represents the target area to be imaged around the asteroid.
https://www.youtube.com/watch?v=e3ffcRPlIok (1:53)
 
https://www.asteroidmission.org/?latest-news=safety-science-osiris-rex-lookout-hazards-approach
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Safety & Science: OSIRIS-REx on the Lookout for Hazards During Approach
By Christine Hoekenga

An artist’s concept of OSIRIS-REx searching for dust plumes in the vicinity of asteroid Bennu. Credit: University of Arizona

October 17, 2018 - On Sept. 12, OSIRIS-REx pointed its medium-range science camera, MapCam, toward asteroid Bennu 621,000 miles (one million kilometers) in the distance. Slewing gently side to side and up and down as it captured 64 images, the spacecraft scanned the area around the asteroid in a carefully choreographed pattern. The day before, it had collected a similar mosaic of images with its long-range science camera, PolyCam.

Over the next few days, scientists on the ground pored over the images, looking for any signs of dust in the vicinity of the asteroid, which could present a hazard to the spacecraft as it approaches. Ultimately, they determined that the coast is clear – for now.

But OSIRIS-REx will look for natural satellites (small moons) and conduct another search for dust plumes when the spacecraft is closer to Bennu.
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