This list of extraterrestrial orbiters is a listing of spacecraft that achieved an extraterrestrial orbit.
Color legend for orbital status | |
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Departed | |
Unclear | |
Inactive | |
Operational |
First artificial object on heliocentric orbit was Luna 1 (1959).
Mission | Country/agency | Orbital insertion | Current status | Notes |
---|---|---|---|---|
Luna 10 [1] | ![]() | 3 April 1966 | Contact lost 30 May 1966, probably decayed the same year | First extraterrestrial and Moon orbiter |
Lunar Orbiter 1 | ![]() | 14 August 1966 | Impacted lunar surface 29 October 1966 | First U.S. extraterrestrial orbiter |
Luna 11 [2] | ![]() | 27 August 1966 | Contact lost 1 October 1966, probably decayed the same or following year | |
Luna 12 | ![]() | 25 October 1966 | Contact lost 19 January 1967, probably decayed the same year | |
Lunar Orbiter 2 | ![]() | Launched 6 November 1966 | Impacted lunar surface 11 October 1967 | |
Lunar Orbiter 3 | ![]() | 8 February 1967 | Impacted lunar surface 9 October 1967 | |
Lunar Orbiter 4 | ![]() | Launched 4 May 1967 | Contact lost 17 July 1967, impacted lunar surface 6 October 1967 | |
Explorer 35 | ![]() | Launched 19 July 1967 | Deactivated 24 June 1973; impacted lunar surface in the middle to late 1970s | |
Lunar Orbiter 5 | ![]() | 5 August 1967 | Deorbited; impacted lunar surface 31 January 1968 | |
Luna 14 | ![]() | 10 April 1968 | Mission terminated 24 June 1968, its orbit probably decayed | |
Luna 19 | ![]() | 2 October 1971 | Mission terminated 20 October 1972 and contact lost on 1 November 1972, probably decayed the following year | |
Explorer 49 | ![]() | Launched 10 June 1973 | Contact lost August 1977, its orbit probably decayed | |
Luna 22 | ![]() | 2 June 1974 | Mission terminated November 1975, its orbit probably decayed in 1976 | |
Apollo 8 | ![]() | Launched 21 December 1968; entered orbit after 69 hrs | Left orbit after 10 orbits; splashdown on Earth | First crewed lunar orbit |
Apollo 10 | ![]() | Launched 18 May 1969 | Left orbit 26 May 1969 | |
Apollo 11 | ![]() | July 19, 1969 | July 21, 1969; Lunar module ascent stage abandoned in orbit, impact site unknown | First human Moon landing |
Apollo 12 | ![]() | November 18, 1969 | November 21, 1969 | Human Moon landing |
Apollo 14 | ![]() | February 4, 1971 | February 7, 1971 | Human Moon landing |
Apollo 15 | ![]() | July 29, 1971 | August 4, 1971 | Human Moon landing |
Apollo 15 subsatellite (PFS-1) | ![]() | August 4, 1971 | January 1973 | |
Apollo 16 | ![]() | April 19, 1972 | April 25, 1972; Lunar module ascent stage abandoned in orbit, impact site unknown | Human Moon landing |
Apollo 16 subsatellite (PFS-2) | ![]() | April 24, 1972 | May 29, 1972 | |
Apollo 17 | ![]() | December 11, 1972 | December 14, 1972 | Human Moon landing |
Hiten and Hagoromo | ![]() | Hiten: 15 February 1993 | Hiten was deliberately deorbited and impacted the lunar surface 10 April 1993 | First Japanese lunar orbiter |
Clementine | ![]() | Launched 25 January 1994 | Left lunar orbit and entered heliocentric orbit; contact lost June 1994 | |
Lunar Prospector | ![]() | Launched 7 January 1998 | Deliberately deorbited; impacted lunar surface 31 July 1999 | |
SMART-1 | ![]() | 11 November 2004 | Deliberately deorbited; impacted lunar surface 3 September 2006 | |
SELENE (Kaguya, Okina and Ouna) | ![]() | 3 October 2007 | Deliberately deorbited; impacted lunar surface 10 June 2009 | |
Chang'e 1 | ![]() | 5 November 2007 | Deliberately deorbited 1 March 2009; impacted the Moon's surface. | First Chinese lunar orbiter |
Chandrayaan-1 | ![]() | 8 November 2008 | Deliberately crashed into lunar surface. Impact probe remained operational for a few days. Contact lost 29 August 2009. | First Indian lunar orbiter |
Lunar Reconnaissance Orbiter [3] | ![]() | 23 June 2009 | Active | |
Chang'e 2 | ![]() | 6 October 2010 | Left lunar orbit 8 June 2011; currently in deep-space orbit | |
ARTEMIS P1 | ![]() | 2 July 2011 | Active | |
ARTEMIS P2 [4] | ![]() | 17 July 2011 | Active | |
Gravity Recovery and Interior Laboratory (GRAIL) | ![]() | 31 December 2011 / 1 January 2012 | Both spacecraft were deliberately deorbited and impacted on the lunar surface 17 December 2012 | |
LADEE | ![]() | 6 October 2013 | Deliberately deorbited 18 April 2014 | |
Chang'e 3 | ![]() | 6 December 2013 | Landed on lunar surface 14 December 2013 | First Chinese lunar landing |
Chang'e 5-T1 | ![]() | 13 January 2015 | Returned to Earth on 31 October 2014 | |
Chang'e 4 | ![]() | 12 December 2018 | Landed on lunar surface 3 January 2019. The Queqiao relay satellite was placed in an Earth-Moon L2 halo orbit. | First lunar far-side landing |
Longjiang-2 microsatellite | ![]() | 25 May 2018 | Deorbited 2019 | |
Beresheet | ![]() | 4 April 2019 | Crashed onto lunar surface 11 April 2019 | First private lunar lander. Successfully orbited for 7 days. Soft landing failed. |
Chandrayaan-2 | ![]() | 20 August 2019 | Orbiter is active. The Vikram lander lost contact at 2.1 km from the lunar surface, and was subsequently destroyed. [5] | It was originally thought that Vikram had survived the impact, and ISRO continued trying to contact the lander until the lunar night. [6] |
Chang'e 5 | ![]() | 1 December 2020 | Orbiter is As of 2022 [update] in lunar DRO orbit. | First lunar sample return mission by China. Ascent stage deorbited on 7 December 2020. Capsule successfully returned sample via service module on 16 December 2020. The orbiter will make lunar flyby in extended mission on 9 September 2021 in Distant retrograde orbit. [7] |
CAPSTONE | ![]() | 14 November 2022 | Active and on a Near-rectilinear halo orbit (NRHO) | Lunar orbiting CubeSat that will test and verify the calculated orbital stability planned for the Gateway space station. |
Artemis 1 | ![]() | 25 November 2022 | Remained on a Selenocentric orbit (DRO) until 5 December 2022, then returned back to Earth | First mission of the Artemis program. |
LunaH-Map | ![]() | 25 November 2022 | Decayed 20 February 2023 | |
Lunar IceCube | ![]() | 25 November 2022 | On a Selenocentric orbit | Contact lost shortly after the launch. Conducted lunar flyby on 21 November 2022, likely in a heliocentric orbit. |
Danuri KPLO | ![]() ![]() | 16 December 2022 | On a Selenocentric orbit | Lunar Orbiter by the Korea Aerospace Research Institute (KARI) of South Korea. The orbiter, its science payload and ground control infrastructure are technology demonstrators. The orbiter will also be tasked with surveying lunar resources such as water ice, uranium, helium-3, silicon, and aluminium, and produce a topographic map to help select future lunar landing sites. |
Hakuto-R Mission 1 | ![]() | 21 March 2023 | Crashed onto lunar surface on 25 April 2023 | Carried the emirati Rashid and the japanese SORA-Q lunar rovers. Contact lost during landing attempt. |
Chandrayaan-3 | ![]() | 5 August 2023 | Success (returned to Earth Orbit) | Propulsion module, also functioning as a Chandrayaan-3 relay satellite. Conducted 4 flybys enroute return to Earth's orbit. |
Luna 25 | ![]() | 16 August 2023 | Crashed onto lunar surface on 19 August 2023 | Lunar south pole lander, landing scheduled for 21 August 2023. Contact lost after orbit lowering maneuver. |
SLIM | ![]() | 25 December 2023 | Landed on Lunar surface on 19 January 2024 | Carried the japanese LEV-1 and LEV-2 lunar rovers. First Japanese soft landing. |
IM-1 Odysseus [8] | ![]() | 21 February 2024 | Landed on lunar surface on 22 February 2024 | Carried the American EagleCam cubesat. |
Queqiao-2 | ![]() | 24 March 2024 | On a Selenocentric orbit | |
Tiandu-1 | ![]() | 24 March 2024 | On a Selenocentric orbit | |
Tiandu-2 | ![]() | 24 March 2024 | On a Selenocentric orbit | |
Chang'e 6 | ![]() | 8 May 2024 | Orbiter on extended mission | First lunar sample return mission from far and south pole of Moon by China. Ascent stage was be deorbited on 6 June 2024. Capsule was be returned sample via service module on 25 June 2024. [9] |
ICUBE-Q | ![]() | 8 May 2024 | On a Selenocentric orbit | First Pakistani lunar mission, piggybacking with Chang'e 6. [10] |
Mission | Country/agency | Orbital insertion | Current status | Notes |
---|---|---|---|---|
Mariner 9 | ![]() | 14 November 1971 | Deactivated 27 October 1972. In derelict orbit around Mars, expected to decay no sooner than 2022 [11] | First spacecraft to orbit another planet First Mars orbiter |
Mars 2 orbiter | ![]() | 27 November 1971 [12] | Mission terminated 22 August 1972; spacecraft in derelict orbit | First Soviet spacecraft to orbit Mars |
Mars 3 orbiter | ![]() | 2 December 1971 [12] | Mission terminated on August 22, 1972 | |
Mars 5 orbiter [13] | ![]() | 12 February 1974 | Contact lost on 28 February 1974 due to a loss of pressurization in the transmitter [14] | |
Viking 1 orbiter | ![]() | 19 June 1976 | Mission terminated 17 August 1980, spacecraft in derelict high altitude orbit. | |
Viking 2 orbiter | ![]() | 7 August 1976 | Mission terminated 25 July 1978, spacecraft in derelict high altitude orbit. | |
Phobos 2 [15] | ![]() | 29 January 1989 | Contact lost 27 March 1989 | |
Mars Global Surveyor | ![]() | 11 September 1997 | Contact lost 2 November 2006; In derelict orbit around Mars, expected to decay no sooner than 2047 [16] | |
2001 Mars Odyssey | ![]() | 24 October 2001 | Active | Longest-surviving, continuously active spacecraft in orbit around another planet |
Mars Express | ![]() | 20 December 2003 | Active | |
Mars Reconnaissance Orbiter | ![]() | 10 March 2006 | Active | |
MAVEN | ![]() | 22 September 2014 | Active | |
Mars Orbiter Mission | ![]() | 24 September 2014 | Contact lost April 2022 [17] | India's first interplanetary mission |
ExoMars Trace Gas Orbiter | ![]() | 19 October 2016 | Active | Carried Schiaparelli EDM lander |
Emirates Mars Mission (Hope) | ![]() | 9 February 2021 | Active | United Arab Emirates's first interplanetary mission |
Tianwen 1 | ![]() | 10 February 2021 | Active | Tianwen-1 is China’s first interplanetary mission, which consists of an orbiter, a lander, and a rover named Zhurong. |
Mission | Country/agency | Orbital insertion | Current status | Notes |
---|---|---|---|---|
Venera 9 | ![]() | 22 October 1975 | Mission terminated on March 22, 1976 | First Venus orbiter |
Venera 10 | ![]() | 23 October 1975 | Contact lost sometime in June 1976 | |
Pioneer Venus Orbiter | ![]() | 4 December 1978 | Contact lost 8 October 1992; Atmospheric entry disintegration on 22 October 1992. | |
Venera 15 | ![]() | 10 October 1983 | Contact lost January 5, 1985 | |
Venera 16 | ![]() | 11 October 1983 | Contact lost June 13, 1984 | |
Magellan | ![]() | 7 August 1990 | Contact lost 13 October 1994. Deliberately deorbited into Venus' atmosphere. | |
Venus Express | ![]() | 11 April 2006 | Contact lost 16 December 2014: Atmospheric entry disintegration in January 2015 | |
Akatsuki | ![]() | 7 December 2015 | Active |
Mission | Country/agency | Orbital insertion | Current status | Notes |
---|---|---|---|---|
Galileo | ![]() | 8 December 1995 | Intentionally deorbited and incinerated in Jupiter's atmosphere 21 September 2003 | First Jupiter orbiter |
Juno | ![]() | 4 July 2016 | Active | |
JUICE | ![]() | July 2031 (planned) | en route | mission to study Jupiter's three icy moons Callisto, Europa and Ganymede, eventually orbiting Ganymede as the first spacecraft to orbit a satellite of another planet. |
Mission | Country/agency | Orbital insertion | Current status | Notes |
---|---|---|---|---|
Cassini-Huygens | ![]() ![]() ![]() | 1 July 2004 | Intentionally deorbited and incinerated in Saturn's atmosphere 15 September 2017 | First Saturn orbiter |
Mission | Country/agency | Orbital insertion | Current status | Notes |
---|---|---|---|---|
MESSENGER | ![]() | 18 March 2011 | Deliberately crashed into surface 30 April 2015. Impact probably around 54.4° N, 149.9° W, near the crater Janáček. | First Mercury orbiter |
Mission | Country/agency | Object | Orbital insertion | Current status | Notes |
---|---|---|---|---|---|
NEAR Shoemaker | ![]() | 433 Eros | 14 February 2000 | Landed 12 February 2001 on the surface of Eros. | First spacecraft to orbit an asteroid |
Dawn | ![]() | 4 Vesta | 16 July 2011 | Left Vesta orbit 5 September 2012 | |
Dawn | ![]() | Ceres | 9 March 2015 | Mission concluded 1 November 2018. In derelict orbit around Ceres, expected to decay no sooner than 2038 [18] | First spacecraft to achieve orbit around two separate objects and to orbit a dwarf planet. |
Rosetta | ![]() | 67P/Churyumov–Gerasimenko | 6 August 2014 | On 30 September 2016, ended its mission by landing on the comet in its Ma'at region. | First spacecraft to orbit a comet. Philae lander module successfully landed on 12 November 2014 |
OSIRIS-REx | ![]() | 101955 Bennu | 31 December 2018 | Collected surface sample and departed from Bennu on 20 October 2020 [19] | Smallest body to be orbited by spacecraft and closest ever orbit [20] [21] |
This is a timeline of Solar System exploration ordering events in the exploration of the Solar System by date of spacecraft launch. It includes:
A lander is a spacecraft that descends towards, then comes to rest on the surface of an astronomical body other than Earth. In contrast to an impact probe, which makes a hard landing that damages or destroys the probe upon reaching the surface, a lander makes a soft landing after which the probe remains functional.
A Moon landing or lunar landing is the arrival of a spacecraft on the surface of the Moon, including both crewed and robotic missions. The first human-made object to touch the Moon was Luna 2 in 1959.
A lunar lander or Moon lander is a spacecraft designed to land on the surface of the Moon. As of 2024, the Apollo Lunar Module is the only lunar lander to have ever been used in human spaceflight, completing six lunar landings from 1969 to 1972 during the United States' Apollo Program. Several robotic landers have reached the surface, and some have returned samples to Earth.
A sample-return mission is a spacecraft mission to collect and return samples from an extraterrestrial location to Earth for analysis. Sample-return missions may bring back merely atoms and molecules or a deposit of complex compounds such as loose material and rocks. These samples may be obtained in a number of ways, such as soil and rock excavation or a collector array used for capturing particles of solar wind or cometary debris. Nonetheless, concerns have been raised that the return of such samples to planet Earth may endanger Earth itself.
The New Frontiers program is a series of space exploration missions being conducted by NASA with the purpose of furthering the understanding of the Solar System. The program selects medium-class missions which can provide high science returns.
The physical exploration of the Moon began when Luna 2, a space probe launched by the Soviet Union, made a deliberate impact on the surface of the Moon on September 14, 1959. Prior to that the only available means of exploration had been observation from Earth. The invention of the optical telescope brought about the first leap in the quality of lunar observations. Galileo Galilei is generally credited as the first person to use a telescope for astronomical purposes; having made his own telescope in 1609, the mountains and craters on the lunar surface were among his first observations using it.
The following outline is provided as an overview of and topical guide to space exploration.
Extraterrestrial material refers to natural objects now on Earth that originated in outer space. Such materials include cosmic dust and meteorites, as well as samples brought to Earth by sample return missions from the Moon, asteroids and comets, as well as solar wind particles.
101955 Bennu (provisional designation 1999 RQ36) is a carbonaceous asteroid in the Apollo group discovered by the LINEAR Project on 11 September 1999. It is a potentially hazardous object that is listed on the Sentry Risk Table and has the highest cumulative rating on the Palermo Technical Impact Hazard Scale. It has a cumulative 1-in-1,750 chance of impacting Earth between 2178 and 2290 with the greatest risk being on 24 September 2182. It is named after Bennu, the ancient Egyptian mythological bird associated with the Sun, creation, and rebirth.
OSIRIS-REx was a NASA asteroid-study and sample-return mission that visited and collected samples from 101955 Bennu, a carbonaceous near-Earth asteroid. The material, returned in September 2023, 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. Following the completion of the primary OSIRIS-REx mission, the spacecraft is planned to conduct a flyby of asteroid 99942 Apophis, now as OSIRIS-APEX.