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OSIRIS-REx
OSIRIS-REx spacecraft model.png
Artist's rendering of the OSIRIS-REx spacecraft
Names Origins, Spectral Interpretation, Resource Identification, Security, Regolith Explorer;
New Frontiers 3
Mission type Asteroid sample return
Operator NASA / Lockheed Martin
Website asteroidmission.org
Mission duration 7 years (planned)
               505 days at asteroid
4 years, 5 months, 18 days (elapsed)
               817 days at asteroid
Spacecraft properties
Manufacturer Lockheed Martin
Launch mass 2,110 kg (4,650 lb)
Dry mass 880 kg (1,940 lb)
Dimensions 2.44 × 2.44 × 3.15 m (8 ft 0 in × 8 ft 0 in × 10 ft 4 in)
Power 1226 to 3000 W
Start of mission
Launch date 8 September 2016, 23:05 UTC
Rocket Atlas V 411, AV-067
Launch site Cape Canaveral, SLC-41
Contractor United Launch Alliance
End of mission
Landing date Planned: 24 September 2023, 15:00 (2023-09-24UTC16) UTC
Landing site Utah Test and Training Range
Orbital parameters
Reference system Bennu-centric
Altitude 0.68–2.1 km (0.42–1.30 mi)
Period 22–62 hours
Flyby of Earth
Closest approach 22 September 2017
Distance 17,237 km (10,711 mi)
Bennu orbiter
Orbital insertion 31 December 2018
(Rendezvous: 3 December 2018)
Orbital departure 3 March 2021 (planned)
Sample mass 60 g (2.1 oz) (planned)
OSIRIS-REx mission logo (circa 2015).png
OSIRIS-REx mission logo
New Frontiers program
← Juno
Dragonfly →

OSIRIS-REx (Origins, Spectral Interpretation, Resource Identification, Security, Regolith Explorer) is a NASA asteroid-study and sample-return mission.

The mission's main goal is to get a sample of at least 60 g (2.1 oz) from 101955 Bennu, a carbonaceous near-Earth asteroid, and return the sample to Earth for a detailed analysis.

The material returned is expected to enable scientists to learn more about the formation and evolution of the Solar System, its initial stages of planet formation, and the source of organic compounds that led to the formation of life on Earth.

If successful, OSIRIS-REx will be the first United States spacecraft to return samples from an asteroid.

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