OSIRIS-REx

**OSIRIS-APEX** ('APophis EXplorer') is an ongoing mission (as of 2024). It is the extension of **OSIRIS-REx**, that was a NASA asteroid-study and sample-return mission. In 2023, the OSIRIS-REx mission was completed (or finished).

Acronym: **OSIRIS-REx** stands for **O**rigins, **S**pectral **I**nterpretation, **R**esource **I**dentification, **S**ecurity, **R**egolith **Ex**plorer.

## The mission from 2016 to 2023

The OSIRIS-REx mission collected samples from 101955 Bennu, a carbonaceous near-Earth asteroid, and returned the samples to earth in September 2023.

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.

The mission was completed, when the Sample Return Capsule was recovered.

Landing date: Sample Return Capsule: September 24, 2023

Landing site of capsule:	Utah Test and Training Range

OSIRIS-REx is the first United States spacecraft to return samples from an asteroid.

## OSIRIS-APEX

After dropping off its sample to Earth on 24 September 2023, the mission _OSIRIS-REx_ became OSIRIS-APEX ('APophis EXplorer').

In 2029, the spacecraft is supposed to start observations of (Apophis or) 99942 Apophis.

## Mission duration

Counting the years and months of the first and second missions:  (elapsed)

The first mission: 7 years (planned)
 at asteroid (actual)

## Infobox (spaceflight/ip)

- **type**: flyby
- **object**: Earth
- **arrival date**: 22 September 2017


## Infobox (spaceflight/ip)

- **type**: orbiter
- **object**: 101955 Bennu, Bennu
- **arrival date**: 31 December 2018
(Rendezvous: 3 December 2018)
- **departure date**: 3 March 2021 (planned)
- **sample mass**: c. 121 g (4.29 oz)


## Infobox (spaceflight/instruments)

- **acronym1**: OCAMS
- **name1**: OSIRIS-REx Camera Suite
- **acronym2**: OLA
- **name2**: OSIRIS-REx Laser Altimeter
- **acronym3**: OTES
- **name3**: OSIRIS-REx Thermal Emission Spectrometer
- **acronym4**: OVIRS
- **name4**: OSIRIS-REx Visible and Infrared Spectrometer
- **acronym5**: REXIS
- **name5**: Regolith X-ray Imaging Spectrometer
- **acronym6**: TAGSAM
- **name6**: TAGSAM, Touch-And-Go Sample Acquisition Mechanism


## Infobox (spaceflight)

- **name**: OSIRIS-REx
OSIRIS-APEX
- **names list**: OSIRIS-REx
OSIRIS-APEX
- **image**: OSIRIS-REx spacecraft model.png
- **image caption**: Artist's rendering of the _OSIRIS-REx_ spacecraft
- **image size**: 290px
- **mission type**: Asteroid sample return and flyby of 99942 Apophis, another asteroid
- **operator**: NASA / Lockheed Martin
- **cospar id**: 2016-055A
- **satcat**: 41757
- **website**: [https://www.asteroidmission.org asteroidmission.org]
- **manufacturer**: Lockheed Martin
- **power**: 1226 to 3000 W
- **launch date**: 8 September 2016, 23:05 UTC
- **launch rocket**: Atlas V 411, AV-067
- **launch site**: Cape Canaveral Air Force Station, Cape Canaveral, Cape Canaveral Space Launch Complex 41, SLC-41
- **launch contractor**: United Launch Alliance
- **orbit reference**: 101955 Bennu, Bennu-centric
- **orbit period**: 22–62 hours
- **insignia**: OSIRIS-REx mission logo (circa 2015).png
- **insignia caption**: OSIRIS-REx mission logo
- **insignia size**: 175px
- **programme**: **New Frontiers program**
- **previous mission**: _Juno (spacecraft), Juno_
- **next mission**: Dragonfly (Titan space probe), _Dragonfly_