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Parts-per-million chart of the relative mass distribution of the Solar System, each cubelet denoting 2 × 10 24 kg. This article includes a list of the most massive known objects of the Solar System and partial lists of smaller objects by observed mean radius. These lists can be sorted according to an object's radius and mass and, for the most ...
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.
This is a list of trans-Neptunian objects (TNOs), which are minor planets in the Solar System that orbit the Sun at a greater distance on average than Neptune, that is, their orbit has a semi-major axis greater than 30.1 astronomical units (AU). The Kuiper belt, scattered disk, and Oort cloud are three conventional divisions of this volume of ...
If the object is accepted as a dwarf planet by astronomical consensus but has yet to receive an official name, the article title should contain both the object's minor-planet number (if applicable) in parentheses and its provisional designation; e.g. (225088) 2007 OR10 (now Gonggong (dwarf planet)).
Proper names of planetary systems often follow common themes – for example, the planets of the star Copernicus are named after European astronomers. Proper names for planets outside of the Solar System – known as exoplanets – are chosen by the International Astronomical Union (IAU) through public naming contests known as NameExoWorlds.
The list of centaurs is compiled from MPC's MPCORB data file [3] based on criteria defined by the JPL-SBDB, [a] and completed with objects from the List of Known Trans-Neptunian Objects [4] and The Deep Ecliptic Survey Object Classifications. [5] by William Johnston and Marc Buie, respectively. As of April 2022, this table contains 928 objects.
The closest exoplanets are those found orbiting the star closest to the Solar System, which is Proxima Centauri 4.25 light-years away. The first confirmed exoplanet discovered in the Proxima Centauri system was Proxima Centauri b, in 2016. HD 219134 (21.6 ly) has six exoplanets, the highest number discovered for any star within this range.
The name Kepler-90 derives directly from the fact that the star is the catalogued 90th star discovered by Kepler to have confirmed planets. [ 6 ] The whole star and planet system is designated by just "Kepler-90", without a postfix, with Kepler-90A specifically referring only to the star, if needed for clarity.
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