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The number of dwarf planets in the Solar System is unknown. Estimates have run as high as 200 in the Kuiper belt [1] and over 10,000 in the region beyond. [2] However, consideration of the surprisingly low densities of many large trans-Neptunian objects, as well as spectroscopic analysis of their surfaces, suggests that the number of dwarf planets may be much lower, perhaps only nine among ...
a A minor planet's dimensions may be described by x, y, and z axes instead of an (average) diameter due to its non-spherical, irregular shape. b Closest approach given in multiples of the minor planet's mean radius · List ordered in ascending order by a minor planet's first visit.
The dwarf planet Ceres, as imaged by NASA's Dawn spacecraft. As of 2024, only two missions have targeted and explored dwarf planets up close. On March 6, 2015, ...
NASA: N/A: Lander: A probe designed to land on Pluto, similar to the proposed Triton Hopper mission. N/A [19] Mariner Mark II: NASA: N/A [a] N/A [a] Proposed family of spacecraft intended to explore dwarf planets and trans-Neptunian objects, later replaced by the lower-cost Discovery Program. N/A: N/A New Horizons 2: NASA: N/A: Flyby
Pages in category "Dwarf planets" The following 13 pages are in this category, out of 13 total. This list may not reflect recent changes. ...
The list of minor planets consists of more than 700 partial lists, each containing 1000 minor planets grouped into 10 tables. The data is sourced from the Minor Planet Center (MPC) and expanded with data from the JPL SBDB (mean-diameter), Johnston's archive (sub-classification) and others (see detailed field descriptions below).
List of missions to minor planets is a listing of spaceflight missions to minor planets, which are category of astronomical body that excludes planets, moons and comets, but orbit the Sun. Most missions to minor planets have been to asteroids or dwarf planets. An artist's impression of New Horizons ' close encounter with the Plutonian system
Host star is the brightest star with multiple known transiting Earth-size exoplanets. Another transiting planet in the system is suspected. [40] HD 101581 c: 0.0925 6.21 transit 41.7 0.740 ± 0.087 4675 ± 53 Host star is the brightest star with multiple known transiting Earth-size exoplanets. Another transiting planet in the system is ...