OSIRIS-REx completes last major mid-course correction before sending its sample capsule back to Earth
OSIRIS-REx yesterday completed a 63 second engine burn, successfully aiming the spacecraft so that its September 24th drop off of its sample capsule will hit the Earth as planned.
Preliminary tracking data indicates OSIRIS-REx changed its velocity, which includes speed and direction, by 1.3 miles, or 2 kilometers, per hour. It’s a tiny but critical shift; without course adjustments like this one the spacecraft would not get close enough to Earth on Sept. 24 to drop off its sample of asteroid Bennu. The spacecraft is currently 24 million miles, or 38.6 million kilometers, from Earth, traveling at about 22,000 miles, or about 35,000 kilometers, per hour.
In the two weeks prior to that drop-off the spacecraft will do two more short burns to refine its aim so that the sample capsule will land precisely as planned on the Defense Department’s Utah Test and Training Range near Salt Lake City.
OSIRIS-REx yesterday completed a 63 second engine burn, successfully aiming the spacecraft so that its September 24th drop off of its sample capsule will hit the Earth as planned.
Preliminary tracking data indicates OSIRIS-REx changed its velocity, which includes speed and direction, by 1.3 miles, or 2 kilometers, per hour. It’s a tiny but critical shift; without course adjustments like this one the spacecraft would not get close enough to Earth on Sept. 24 to drop off its sample of asteroid Bennu. The spacecraft is currently 24 million miles, or 38.6 million kilometers, from Earth, traveling at about 22,000 miles, or about 35,000 kilometers, per hour.
In the two weeks prior to that drop-off the spacecraft will do two more short burns to refine its aim so that the sample capsule will land precisely as planned on the Defense Department’s Utah Test and Training Range near Salt Lake City.