This is a list of named geological features on Pluto, identified by scientists working with data from the New Horizons spacecraft. The International Astronomical Union (IAU) officially approved the first 14 names on 8 August 2017 (announced 7 September 2017),[1] with additional names following in each subsequent year, but many of the names listed on this page are still informal.[2] The IAU has determined that names will be chosen from the following themes:[3] [4]
A cavus is a hollow or steep-sided depression. The following is a list of official and unofficial names chosen by the New Horizons team.
| width=100 | Feature ! | Named after | Name approved |
|---|---|---|---|
| 2017-08-08 | |||
| Baralku Cavi | Baralku, the island of the dead in Yolngu culture | — | |
| Hekla Cavus | An Icelandic volcano believed to be the entrance to Hell in medieval European times | 2018-05-30 |
A collis is a low hill. Plutonian colles are named after spacecraft that operated in Earth orbit. The following is a list of official and unofficial names chosen by the New Horizons team.
| width=100 | Feature ! | Named after | Name approved |
|---|---|---|---|
| Astrid Colles | — | ||
| 2022-05-07 | |||
| Satélite de Coleta de Dados, first Brazilian satellite | — | ||
| Columbia Colles | 2022-05-07 | ||
| Soyuz Colles | The Soyuz program; honors the loss of Soyuz 11 | — |
Plutonian craters are named after scientists and other people associated with the study of Pluto. The following is a list of official and unofficial names chosen by the New Horizons team.
| width=100 | Feature ! | Named after | Name approved |
|---|---|---|---|
| Bower | Ernest Clare Bower, American astronomer who calculated one of the first orbits of Pluto | 2024-09-11 | |
| Brinton | Henry Brinton, NASA administrator instrumental in Pluto studies | — | |
| Venetia Burney, who proposed the name of Pluto | 2017-08-08 | ||
| Coradini | Angioletta Coradini, Italian planetary scientist | 2022-05-07 | |
| Coughlin | Thomas Boyd Coughlin, American mechanical and space engineer, first project manager of the New Horizons mission | 2020-01-03 | |
| Edgeworth | 2021-02-03 | ||
| Elliot | James L. Elliot, discoverer of Pluto's atmosphere | 2017-08-08 | |
| Farinella | Paolo Farinella, Italian astronomer | 2024-09-11 | |
| Giclas | Henry L. Giclas, an astronomer at Lowell Observatory | — | |
| Guest | John Guest, British volcanologist and planetary scientist | — | |
| H. Smith | — | ||
| Hardaway | Lisa Hardaway, American aerospace engineer and program manager for the RALPH telescope on New Horizons | 2020-08-05 | |
| Hardie | Robert H. Hardie, American astronomer, co-discoverer of Pluto's 6.4-day rotation period | 2020-01-03 | |
| Hollis | Andrew Hollis, British astronomer | — | |
| Khare | Bishun Khare, Indian-American chemist specialized in planetary atmospheres, studied tholins extensively | 2019-05-30 | |
| Kiladze | Rolan Kiladze, Georgian astronomer who investigated the dynamics, astrometry, and photometry of Pluto | 2019-05-30 | |
| Kowal | 2022-05-07 | ||
| Oort | 2021-02-03 | ||
| Pulfrich | Carl Pulfrich, German physicist who developed the blink-comparator used to discover Pluto | 2020-08-05 | |
| Simonelli | Damon Simonelli, American astronomer and Pluto geologist | 2019-05-30 | |
| Zagar | Damon Francesco, Italian astronomer who carried out early studies of the orbit of Pluto | 2020-08-05 |
A dorsum is a ridge. Plutonian dorsa are named after underworlds in mythology. The following is a list of official and unofficial names chosen by the New Horizons team.
| width=100 | Feature ! | Named after | Name approved |
|---|---|---|---|
| Pandemonium Dorsa | — | ||
| Tartarus Dorsa | 2017-08-08 |
A Fluctus is a terrain covered by outflow of liquid. Plutonian fluctūs are named after travellers to the underworld. The following is a list of official and unofficial names chosen by the New Horizons team.[5]
| width=100 | Feature ! | Named after | Name approved |
|---|---|---|---|
| Dionysus Fluctus | The god Dionysus from Greek mythology, who travels to Hades (the underworld) to bring the playwright Euripides back | — | |
| Mpobe Fluctus | Mpobe from Baganda mythology, a hero who willingly enters the underground world | — | |
| Pere Porter Fluctus | is the character of a 16th-17th century moral novel who travels to hell | — | |
| Xanthias Fluctus | Xanthias from Greek mythology, the slave who joins Dionysus on his travel to the underworld | — |
A fossa is a ditch-like feature. Plutonian fossae are named after figures associated with underworld myths. The following is a list of official and unofficial names chosen by the New Horizons team.
| width=100 | Feature ! | Named after | Name approved |
|---|---|---|---|
| Beatrice Fossa | Beatrice, visits hell and asks Virgil to guide Dante in Dante's Inferno | 2021-02-03 | |
| Djanggawul Fossae | Djanggawul, Yolngu creation figures from the Island of the Dead | 2017-08-08 | |
| Dumuzi Fossa | Dumuzi, Sumerian fertility god who replaced his wife Inanna in the underworld | 2021-02-03 | |
| Hermod Fossae | 2019-09-25 | ||
| Inanna Fossa | Inanna, Sumerian goddess who descended to the underworld | 2021-02-03 | |
| Kaknú Fossa | Kaknú, legendary Ohlone hero who travelled to the underworld to battle Wiwe. He resembled a peregrine falcon. | 2019-08-13 | |
| Mwindo Fossae | Mwindo, legendary Nyanga hero who travelled to the underworld | 2019-05-30 | |
| Sleipnir Fossa | Sleipnir, the steed Odin rides to the underworld | 2017-08-08 | |
| Sun Wukong Fossa | Sun Wukong, the Chinese Monkey King who went to Hell | — | |
| Uncama Fossa | Uncama, Zulu tale hero who followed a porcupine underground and came upon the village of dead souls | 2020-01-03 | |
| Virgil Fossae | Virgil, Dante's guide through Hell and Purgatory in The Divine Comedy | 2017-08-08 |
A lacus is a small plain, derived from the word . The following is a list of names chosen by the New Horizons team.
| width=100 | Feature ! | Named after | Name approved |
|---|---|---|---|
| Alcyonia Lacus | Lerna, also known as the Alcyonian Lake, was an entry to the netherworld in Greek mythology. | 2019-05-30 | |
A linea is an elongated marking. Plutonian lineae are named after space probes.
| width=100 | Feature ! | Named after | Name approved |
|---|---|---|---|
| Chandrayaan Linea | Chandrayaan program, a series of Indian lunar probes (2008-present) | 2023-04-11 | |
| Hiten Linea | Hiten, the first Japanese lunar probe (1990) | 2023-04-11 | |
| Luna program, a series of Soviet lunar probes (1959-1976), including the first man-made object to reach the Moon | 2023-04-11 | ||
| Surveyor Linea | Surveyor program, a series of U.S. lunar probes (1966-1968) | 2023-04-11 | |
| Yutu Linea | Yutu, a series of Chinese lunar rovers (2013-present) | 2023-04-25 | |
| Zond Linea | Zond program, a series of Soviet space probes (1964-1970) | 2023-04-11 | |
A macula is a dark spot. Plutonian maculae are named after underworld creatures from fiction and mythology. The following is a list of names chosen by the New Horizons team. Names that have been officially approved are labeled as such.
| width=100 | Feature ! | Named after | Name approved |
|---|---|---|---|
| Cadejo, from Central American folklore | — | ||
| One of the two leading Maya death gods from the Popol Vuh | — | ||
| Meng Po, the Chinese goddess of forgetfulness after death | — | ||
| — | |||
| One of the two leading Maya death gods from the Popol Vuh | — |
A mons is a mountain. Plutonian montes (mountain ranges) are named after explorers and adventurers. The following is a list of names chosen by the New Horizons team. Names that have been officially approved are labeled as such.
| width=100 | Feature ! | Named after | Name approved |
|---|---|---|---|
| Al-Idrisi Montes | Muhammad al-Idrisi, medieval Almoravid explorer | 2017-08-08 | |
| Jeanne Baret, first woman to have completed circumnavigation voyage of the globe | 2018-04-26 | ||
| Coleman Mons | Bessie Coleman, American aviator, first African-American woman and first Native American to hold a pilot license | 2021-09-02 | |
| Elcano Montes | Juan Sebastián Elcano, completed Magellan's circumnavigation after his death | 2019-05-30 | |
| Edmund Hillary, first to scale Mount Everest (with Tenzing Norgay) | 2017-08-08 | ||
| Auguste Piccard, conducted measurements of the upper atmosphere using balloons to reach an altitude of 23 kilometers | 2019-05-30 | ||
| Pigafetta Montes | Antonio Pigafetta, participated in Magellan's circumnavigation and wrote its only first-hand record | 2019-05-30 | |
| Tabei Montes | 2019-11-19 | ||
| Tenzing Norgay, first to scale Mount Everest (with Edmund Hillary) | 2017-08-08 | ||
| Wilbur and Orville Wright, built and flew the first successful airplane | 2019-05-30 | ||
| Zheng He Montes | Zheng He, medieval Chinese explorer | 2021-02-03 |
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A palus (literally) is a small plain. Paludes on Pluto are named after historic explorers. The following is a list of names chosen by the New Horizons team. Names that have been officially approved are labeled as such.
| width=100 | Feature ! | Named after | Name approved |
|---|---|---|---|
| David-Néel Palus | — | ||
| Hyecho Palus | Hyecho, Korean traveler and scholar, crossed Asia from China to Arabia and back in 724-727 | 2020-01-02 | |
| Tinné Paludes | Alexine Tinne, Dutch explorer in Africa, the first European woman to attempt to cross the Sahara | — | |
A planum is a plateau or high plain. One (Sputnik Planum) was initially identified on Pluto; but it has since been recognized to be a planitia.
A planitia is a low plain, distinct from plana as they are located on lower terrain. The following is a list of names chosen by the New Horizons team. Names that have been officially approved are labeled as such.
| width=100 | Feature ! | Named after | Name approved |
|---|---|---|---|
| Lunokhod Planitia | The Lunokhod program, two Soviet lunar rovers | 2021-02-03 | |
| Ranger Planitia | The Ranger program, a series of unmanned probes sent to the moon in the 1960s | 2021-02-03 | |
| Rosetta Planitia | The Rosetta mission, the first mission to orbit and land a spacecraft on a comet. | 2022-05-07 | |
| Sputnik 1, the first satellite to orbit the Earth | 2017-08-08 |
A regio is a region geographically distinct from its surroundings. Plutonian regiones are named after underworld spirits in fiction and mythology, or after scientists associated with the study of Pluto. The following is a list of names chosen by the New Horizons team. Names that have been officially approved are labeled as such.
| width=100 | Feature ! | Named after | Name approved |
|---|---|---|---|
| Michael J. S. Belton, British astronomer | 2023-09-22 | ||
| Robert Sutton Harrington, American astronomer, the co-discoverer of Charon and first person to calculate the Pluto system's mass | 2024-09-11 | ||
| Percival Lowell, whose ideas about Planet X inadvertently led to Pluto's discovery | 2019-05-30 | ||
| Viktor Safronov, Russian astronomer | 2023-09-22 | ||
| Shafika Gil'mievna Sharaf, Soviet astronomer | 2024-09-11 | ||
| Clyde Tombaugh, discoverer of Pluto | 2017-08-08 |
A rupes is an escarpment. Plutonian rupēs are named after explorers. The following is a list of names chosen by the New Horizons team. Names that have been officially approved are labeled as such.
| width=100 | Feature ! | Named after | Name approved |
|---|---|---|---|
| Cousteau Rupes | Jacques Cousteau, undersea explorer | — | |
| Eriksson Rupes | Leif Erikson, first Norse explorer of America | — | |
| Piri Rupes | 2019-05-30 | ||
| Ride Rupes | Sally Ride, American astronaut and physicist, first American woman in space | 2021-09-02 |
A terra is an extensive landmass. Plutonian terrae are named after space probes. The following is a list of names chosen by the New Horizons team. Names that have been officially approved are labeled as such.
| width=100 | Feature ! | Named after | Name approved |
|---|---|---|---|
| Hayabusa, the first spacecraft to return a sample of an asteroid | 2017-08-08 | ||
| 2021-02-03 | |||
| Vega Terra | The Vega program, which dropped probes onto Venus's surface along with the first close flybys to Comet Halley | 2019-05-30 | |
| The Venera program, first landers on Venus | 2019-05-30 | ||
| The Viking program, two Mars orbiters and landers | 2021-02-03 | ||
| 2017-08-08 |
A vallis is a valley. Plutonian valles are named after historic explorers. The following is a list of names chosen by the New Horizons team. Names that have been officially approved are labeled as such.
| width=100 | Feature ! | Named after | Name approved |
|---|---|---|---|
| Heyerdahl Vallis | Thor Heyerdahl, Norwegian adventurer and ethnographer | — | |
| Hunahpu Valles | 2019-05-30 | ||
| Kupe Vallis | Kupe, legendary discoverer of New Zealand | — | |
| Lemminkäinen Valles | Lemminkäinen, a hero of the Finnish national epic the Kalevala, traveled to the underworld | 2022-05-07 | |
| Väinämöinen Valles | Väinämöinen, central character of the Finnish national epic the Kalevala, traveled to the underworld | 2022-05-07 |