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Initially, the names given to minor planets followed the same pattern as the other planets: names from Greek or Roman myths, with a preference for female names. With the discovery in 1898 of the first body found to cross the orbit of Mars, a different choice was deemed appropriate, and 433 Eros was chosen.
The IAU's names for exoplanets – and on most occasions their host stars – are chosen by the Executive Committee Working Group (ECWG) on Public Naming of Planets and Planetary Satellites, a group working parallel with the Working Group on Star Names (WGSN). [1] Proper names of stars chosen by the ECWG are explicitly recognised by the WGSN. [1]
Astronomical naming conventions § Planets, for the planets of the Solar System; Planetary nomenclature, for features on those planets; Exoplanet naming convention, for planets outside the Solar System; Minor-planet designation, for initial designations of dwarf planets, asteroids etc. Meanings of minor-planet names, for later names of those bodies
The list below concerns those minor planets in the specified number-range that have received names, and explains the meanings of those names. Official naming citations of newly named small Solar System bodies are approved and published in a bulletin by IAU's Working Group for Small Bodies Nomenclature (WGSBN). [ 1 ]
Names of mountains and peaks from Middle-earth, the fictional setting in fantasy novels by English author J.R.R. Tolkien (1892–1973) Planitiae and labyrinthi Names of planets from the Dune series of science fiction novels by American author Frank Herbert (1920–1986) Sinūs Names of terrestrial bays, coves, fjords or other inlets Undae
There are eight planets within the Solar System; planets outside of the solar system are also known as exoplanets. Artist's concept of the potentially habitable exoplanet Kepler-186f As of 14 February 2025, there are 5,834 confirmed exoplanets in 4,356 planetary systems , with 977 systems having more than one planet . [ 1 ]
Over the last four decades, the list has grown significantly with an average rate of 492 new namings published every year (or 1.35 namings per day). While in March 1979, [2] only 1924 minor planets had received a name and completed the designation process, as of 15 July 2024, the list contains 24,836 named objects. [1]
The first hour of each day was named after the ruling planet, giving rise to the names and order of the Roman seven-day week. Modern Latin-based cultures, in general, directly inherited the days of the week from the Romans and they were named after the classical planets; for example, in Spanish Miércoles is Mercury, and in French mardi is Mars ...