Sunday, December 2, 2018

NASA’s OSIRIS-REx Asteroid Sampler Set to Rendezvous with Target Bennu Dec. 3: Watch Live


This "super-resolution” view of asteroid Bennu was created using eight images obtained by NASA’s OSIRIS-REx spacecraft on Oct. 29, 2018, from a distance of about 205 miles (330 kilometers).  Rendezvous with target asteroid, Bennu, slated for Dec. 3, 2018. Credits: NASA/Goddard/University of Arizona
Ken Kremer  --SpaceUpClose.com & RocketSTEM –2 December 2018

CAPE CANAVERAL, FL – NASA’s OSIRIS-REx asteroid sampling spacecraft is scheduled to rendezvous with its targeted asteroid, Bennu, on Monday, Dec. 3 at approximately noon EST.

OSIRIS-Rex which stands for Origins, Spectral Interpretation, Resource Identification, Security-Regolith Explorer (OSIRIS-REx) is NASA’s first mission to visit a near-Earth asteroid, survey the surface, collect a sample and deliver it safely back to Earth. 

NASA will air a live event from 11:45 a.m. to 12:15 p.m. EST to highlight the arrival of the agency’s first asteroid sample return mission. 

The program will originate from OSIRIS-REx’s mission control at the Lockheed Martin Space facility in Littleton, Colorado, and will air on NASA Television, Facebook LiveUstreamYouTube and the agency's website. NASA TV also will air an arrival preview program starting at 11:15 a.m. EST.

The spacecraft will spend almost a year surveying the asteroid with five scientific instruments with the goal of selecting a location that is safe and scientifically interesting to collect the sample. OSIRIS-REx will return the sample to Earth in September 2023.

Participants in the arrival coverage event include:


·        Michelle Thaller, moderator, NASA’s Goddard Space Flight Center, Greenbelt, Md


·        Rich Burns, OSIRIS-REx project manager, NASA’s Goddard Space Flight Center, Greenbelt, Md

·        Heather Enos, OSIRIS-REx deputy principal investigator, University of Arizona, Tucson

·        Mark Fisher, OSIRIS-REx spacecraft engineer, Lockheed Martin Space, Littleton, Colo.

·        Coralie Adam, OSIRIS-REx flight navigator, KinetX, Inc. Space Navigation and Flight Dynamics, Simi Valley, Calif.

OSIRIS-REx launched on Sept. 8, 2016, on a United Launch Alliance Atlas V rocket from pad 41 on Cape Canaveral Air Force Station, FL, and has been slowly approaching Bennu.
OSIRIS-REx orbit diagram as of Nov. 26, 2018 on final approach to target asteroid Bennu. Credit: NASA
To date OSIRIS-REx has traveled over 2 Billion kilometers and is currently about 124 million km from Earth. 

The round trip time for radio signals to go back and forth to the spacecraft from earth is about 13.8 minutes. The 1-way light time is over 6.8 minutes.

OSIRIS-Rex spacecraft in KSC cleanroom prior to launch Sept 2016 from pad 41 on Cape Canaveral Air Force Station, FL. Credit: Ken Kremer/kenkremer.com/spaceupclose.com
After arrival at Bennu, the spacecraft will spend the first month performing flybys of Bennu’s north pole, equator and south pole, at distances ranging between 11.8 and 4.4 miles (19 and 7 km) from the asteroid. These maneuvers will allow for the first direct measurement of Bennu’s mass as well as close-up observations of the surface. These trajectories will also provide the mission's navigation team with experience navigating near the asteroid.

“Bennu’s low gravity provides a unique challenge for the mission," said Rich Burns, OSIRIS-REx project manager at NASA’s Goddard Space Flight Center in Greenbelt, Maryland. "At roughly 0.3 miles [500 meters] in diameter, Bennu will be the smallest object that any spacecraft has ever orbited.”

The spacecraft will extensively survey the asteroid before the mission team identifies two possible sample sites. Close examination of these sites will allow the team to pick one for sample collection, scheduled for early July 2020. After sample collection, the spacecraft will head back toward Earth before ejecting the Sample Return Capsule for landing in the Utah desert in Sept. 2023.    

Watch for Ken’s continuing onsite coverage of NASA, SpaceX, ULA, Boeing, Lockheed Martin, Northrop Grumman and more space and mission reports direct from the Kennedy Space Center, Cape Canaveral Air Force Station, Florida and Wallops Flight Facility, Virginia.

Stay tuned here for Ken's continuing Earth and Planetary science and human spaceflight news: www.kenkremer.com –www.spaceupclose.com – twitter @ken_kremer – email: ken at kenkremer.com

Dr. Kremer is a research scientist, journalist and photographer based in the KSC area.

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Ken’s photos are for sale and he is available for lectures and outreach events


Learn more about the upcoming upcoming/recent SpaceX Falcon 9/CRS-16 launch to ISS,  NASA missions, ULA Atlas & Delta launches, SpySats and more at Ken’s upcoming outreach events at Quality Inn Kennedy Space Center, Titusville, FL, evenings:


Dec 3,4: “SpaceX Dragon CRS-16 resupply launch to ISS, SpaceX Falcon Heavy & Falcon 9 launches, upcoming SpaceX Falcon 9 USAF GP3 3-01, NRO & USAF Spysats, SLS, Orion, Boeing and SpaceX Commercial crew capsules, OSIRIS-Rex, Juno at Jupiter, InSight Mars lander, Curiosity and Opportunity explore Mars, NH at Pluto, Kuiper Belt and more,” Kennedy Space Center Quality Inn, Titusville, FL, evenings. Photos for sale






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