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Region between the orbits of Mars and Jupiter
The asteroid belt is a torus-shaped region in the Solar System, centered on the Sun and roughly spanning the space between the orbits of the planets Jupiter
Asteroid_belt
Minor planet found within the inner Solar System
as the main asteroid belt. The total mass of all the asteroids combined is only 3% that of Earth's Moon. The majority of main belt asteroids follow slightly
Asteroid
Proposed concepts for the human colonization of the asteroids
Asteroids, including those in the asteroid belt, have been suggested as possible sites of space colonization. Motives include the survival of humanity
Colonization of the asteroid belt
Colonization_of_the_asteroid_belt
Theory of early changes in Jupiter's orbit
Mars. Jupiter twice crossed the asteroid belt, scattering asteroids outward then inward. This resulted in the asteroid belt having a small mass, a wide range
Grand_tack_hypothesis
minor planets are asteroids. Minor planet numbers are also given to objects of the Kuiper belt, which is similar to the asteroid belt but farther out (around
List_of_exceptional_asteroids
Bodies orbiting within the main asteroid belt which have shown cometary activity
orbits remain within Jupiter's orbit (like an asteroid). These bodies were originally designated main-belt comets (MBCs) in 2006 by astronomers David C
Active_asteroid
Asteroids found outside of the Solar System
System. NASA has conducted studies in which simulations indicate that asteroid belts are likely to be a common feature around stars in planetary systems
Exoasteroid
Scenario of giant planet migration
orbits of the terrestrial planets and the asteroids, leaving the planets' orbits too eccentric, and the asteroid belt with too many high-inclination objects
Jumping-Jupiter_scenario
Stony main-belt asteroid
15 Eunomia is a large asteroid in the middle asteroid belt. It is the largest of the stony (S-type) asteroids, with a mean diameter of about 270 kilometres
15_Eunomia
Planetary system consisting of the Sun and objects orbiting it
dwarf planet Ceres and many of these smaller bodies are located in the asteroid belt (between Mars's and Jupiter's orbit), while all other dwarf planets
Solar_System
Second largest main-belt asteroid
(minor-planet designation: 4 Vesta) is one of the largest objects in the asteroid belt, with a mean diameter of 525 kilometres (326 mi). It was discovered
4_Vesta
System: asteroids, distant objects, and dwarf planets, but not comets. As of 2022, the vast majority (97.3%) are asteroids from the asteroid belt. Their
Lists_of_minor_planets
Area of the Solar System beyond the planets, comprising small bodies
Sun. It is similar to the asteroid belt, but is far larger—20 times as wide and 20–200 times as massive. Like the asteroid belt, it consists mainly of small
Kuiper_belt
Fourth-largest asteroid
is a large asteroid in the outer region of the main asteroid belt, between the orbits of Mars and Jupiter. It was the tenth known asteroid, discovered
10_Hygiea
Hypothetical extension of the asteroid belt
The E-belt asteroids were the population of a hypothetical extension of the primordial asteroid belt proposed as the source of most of the basin-forming
E-belt_asteroids
Scenario for the dynamical evolution of the Solar System
with a remnant remaining as the Hungaria asteroids. Some D-type asteroids are embedded in the inner asteroid belt, within 2.5 au, during encounters with
Nice_model
Exploitation of raw materials from asteroids
Asteroid mining is the hypothetical and technically possible extraction of materials from asteroids and other minor planets, including near-Earth objects
Asteroid_mining
Dwarf planet in the asteroid belt
planet in the main asteroid belt between the orbits of Mars and Jupiter. It was the first object identified in the asteroid belt, discovered on 1 January
Ceres_(dwarf_planet)
Planned UAESA mission to the Asteroid belt
designed to journey to seven different main belt asteroids. Proposed under the Emirates Mission to the Asteroid Belt, it is named in recognition of the foundational
MBR_Explorer
Hypothesized astronomical event
planets underwent orbital migration, scattering objects from the asteroid belt, Kuiper belt, or both, into eccentric orbits and into the path of the terrestrial
Late_Heavy_Bombardment
Asteroid population sharing similar proper orbital elements
with several tens of less certain groupings. Most asteroid families are found in the main asteroid belt, although several family-like groups such as the
Asteroid_family
Stony main-belt asteroid
(minor-planet designation: 3 Juno) is a large asteroid in the asteroid belt. Juno was the third asteroid discovered, in 1804, by German astronomer Karl
3_Juno
Metallic main-belt asteroid
and contains about one percent of the cumulative mass of the whole asteroid belt. It was thought to be the exposed core of a protoplanet, but observations
16_Psyche
Main belt asteroid
provisional designation 2008 QH24, is a Vestian asteroid orbiting in the inner region of the asteroid belt, approximately 1 kilometer (0.6 mi) in diameter
274301_Wikipedia
Asteroid visited by New Horizons
JF56) is a small background asteroid in the intermediate asteroid belt. It was discovered by Lincoln Near-Earth Asteroid Research in May 2002, and imaged
132524_APL
Large asteroid in the asteroid belt
52 Europa is the sixth-largest asteroid in the asteroid belt, having a diameter of over 300 km, though it is not correspondingly massive. It is not spherical
52_Europa
Part of the largest cluster of asteroid families in the asteroid belt
asteroid families in the asteroid belt. It is located in the inner region of the asteroid belt, orbiting the Sun between 2.41 and 2.5 AU. Asteroids in
Nysa–Polana_complex
Large asteroid in the asteroid belt
fifth and tenth highest in the asteroid belt, with a mass estimated to be 1.2% of the mass of the entire asteroid belt. Observations by the Very Large
704_Interamnia
smaller than 30°) is called the asteroid belt. It can be further subdivided by the Kirkwood Gaps into the: Inner asteroid belt, inside of the strong Kirkwood
List_of_minor-planet_groups
Star in the constellation Lepus
which is bright enough to be seen with the naked eye. In 2001, an asteroid belt was confirmed to orbit the star. Zeta Leporis, Latinized from ζ Leporis
Zeta_Leporis
Hypothetical fifth plant that existed between Mars and the asteroid belt
Chambers and Jack J. Lissauer to have once existed between Mars and the asteroid belt. In their hypothesis, the Late Heavy Bombardment of the Hadean eon began
Planet_V
terrestrial region, between 2 and 4 AU from the Sun, is called the asteroid belt. The asteroid belt initially contained more than enough matter to form 2–3 Earth-like
Formation and evolution of the Solar System
Formation_and_evolution_of_the_Solar_System
Other planets thought to be 5th from the Sun
was positioned between Mars and Jupiter was destroyed, creating the asteroid belt between these planets. First proposed by astronomer Heinrich Wilhelm
Fifth_planet_(hypothetical)
First spacecraft to visit Jupiter and the outer Solar System (1972–2003)
to the planet Jupiter. It was the first spacecraft to traverse the asteroid belt and the first of five artificial objects to achieve the escape velocity
Pioneer_10
Asteroid sharing the orbit of Jupiter
approximately equal to the number of asteroids larger than 1 km in the asteroid belt. Like main-belt asteroids, Jupiter trojans form families. As of
Jupiter_trojan
S-type asteroid in the inner asteroid belt with stony mineralogical composition
951 Gaspra is an S-type asteroid that orbits very close to the inner edge of the asteroid belt. Gaspra was discovered by Russian astronomer G. N. Neujmin
951_Gaspra
Class of near-Earth asteroids
resonant family of dynamically cold small bodies in the near-Earth asteroid belt". Monthly Notices of the Royal Astronomical Society: Letters. 434 (1):
Arjuna_asteroid
Red main-belt asteroid
269 Justitia is an asteroid located in the middle main asteroid belt. It was discovered on 21 September 1887 by Austrian astronomer Johann Palisa at Vienna
269_Justitia
Main-belt asteroid
66 Maja (/ˈmeɪə/) is a carbonaceous background asteroid from the central regions of the asteroid belt, approximately 71 kilometers in diameter. It was
66_Maja
Most common asteroid spectral type
than most other asteroid types, except for D-types and others that lie mostly at the extreme outer edge of the asteroid belt. Asteroids of this class have
C-type_asteroid
Hypotheses for the possible sources of the water on Earth
from icy planetesimals similar in composition to asteroids in the outer edges of the asteroid belt. Liquid water, necessary for all known life, continues
Origin_of_water_on_Earth
Asteroid spectral type indicating stony composition
magnesium-silicates. They are dominant in the inner part of the asteroid belt within 2.2 AU, common in the central belt within about 3 AU, but become rare farther out
S-type_asteroid
Large asteroid in the asteroid belt
511 Davida is a large C-type asteroid in the asteroid belt. It is one of the largest asteroids; approximately tied for 7th place, to within measurement
511_Davida
Main-belt asteroid
largest asteroids in the asteroid belt. It was discovered by Johann Palisa on 25 February 1892 in Vienna. It is one of the top-20 largest asteroids in the
324_Bamberga
Hypothetical former Solar System planet
corresponding to a gap in the sequence. (1) Ceres, the largest asteroid in the asteroid belt (now considered a dwarf planet), was serendipitously discovered
Phaeton_(hypothetical_planet)
Main-belt asteroid
is a binary asteroid located in the Solar System's inner main asteroid belt. It is one of the largest and brightest known E-type asteroids, a rare type
44_Nysa
Group of asteroids in orbital resonance with Jupiter
The Hilda asteroids (adj. Hildian) are a dynamical group of more than 6,000 asteroids located beyond the asteroid belt but within Jupiter's orbit, in a
Hilda_asteroid
Main-belt asteroid
21 Lutetia is a large M-type asteroid in the main asteroid belt. It measures about 100 kilometers in diameter (120 km along its major axis). It was discovered
21_Lutetia
Series of novels by Ben Bova
industrialist Dan Randolph still seeks to exploit the mineral wealth of the asteroid belt and explore the Solar System, as he believes that there is a fortune
Grand_Tour_(novel_series)
Background asteroid from the central region of the asteroid belt
(provisional designation 2005 QP51) is a background asteroid from the central region of the asteroid belt, approximately 3 kilometers (2 miles) in diameter
152188_Morricone
Small planetary-mass object
was still more than ten times as massive as the largest object in the asteroid belt, Ceres, it had only one-fifth the mass of Earth's Moon. Furthermore
Dwarf_planet
settings. The once-popular Phaëton hypothesis, which states that the asteroid belt consists of the remnants of the former fifth planet that existed in
Asteroids_in_fiction
Prehistoric impact crater in Mexico
the Chicxulub asteroid. The authors, William F. Bottke, David Vokrouhlický, and David Nesvorný, argued that a collision in the asteroid belt 160 million
Chicxulub_crater
Main-belt asteroid
22 Kalliope (/kəˈlaɪ.əpi/; kə-LY-ə-pee) is a large M-type asteroid from the asteroid belt discovered by J. R. Hind on 16 November 1852. It is named after
22_Kalliope
Main-belt asteroid
provisional designation 1993 TQ1) is a bright background asteroid from the inner regions of the asteroid belt, approximately 2 kilometers in diameter. It was discovered
46610_Bésixdouze
Main-belt asteroid
243 Ida is an asteroid in the Koronis family of the asteroid belt. It was discovered on 29 September 1884 by Austrian astronomer Johann Palisa at Vienna
243_Ida
Government agency
UAESA announced a mission to the asteroid belt, that is planned to be launched in 2028. It will flyby the asteroids 10253 Westerwald, 623 Chimaera, 13294
United Arab Emirates Space Agency
United_Arab_Emirates_Space_Agency
Asteroid spectral type
asteroids are asteroids thought to have enstatite (MgSiO3) achondrite surfaces. They form a large proportion of asteroids inward of the asteroid belt
E-type_asteroid
Large, round non-stellar astronomical object
be part of the asteroid belt; and Pluto, later found to be the largest member of the collection of icy bodies known as the Kuiper belt. The discovery
Planet
Third-largest asteroid
mass of Ceres, constituting an estimated 7% of the total mass of the asteroid belt. Its estimated volume is equivalent to a sphere 507 to 515 kilometers
2_Pallas
Objects sharing the orbit of a larger one
estimate that the Jovian trojans are about as numerous as the asteroids of the asteroid belt. Later on, objects were found orbiting near the Lagrangian points
Trojan_(celestial_body)
Type of asteroid spectral group
possibly with water ice in their interiors. D-type asteroids are found in the outer asteroid belt and beyond; examples are 152 Atala, 944 Hidalgo and
D-type_asteroid
Main belt asteroid target of the Lucy mission
VD57) is a binary main-belt asteroid about 740 meters (2,400 feet) in diameter. It was discovered by the Lincoln Near-Earth Asteroid Research (LINEAR) survey
152830_Dinkinesh
Stony background asteroid from the inner regions of the asteroid belt
provisional designation 1978 WC, is a stony background asteroid from the inner regions of the asteroid belt, approximately 7 kilometers (4.3 miles) in diameter
6433_Enya
Asteroid
provisional designation 2010 LD58, is a dark background asteroid from the outer regions of the asteroid belt, approximately 3.5 kilometers (2.2 miles) in diameter
284996_Rosaparks
Small Solar System body with an orbit that can bring it close to Earth
composition of near-Earth asteroids is comparable to that of asteroids from the asteroid belt, reflecting a variety of asteroid spectral types. A small
Near-Earth_object
Main-belt asteroid
designation: A918 LA or 1918 DT) is a bright background asteroid from the outer regions of the asteroid belt. It was discovered on 4 June 1918, by German astronomer
894_Erda
Mars is much closer to the asteroid belt and has less gravity than Earth, it would take less Delta-v to get to the Asteroid belt and return minerals to Mars
Colonization_of_Mars
Outer main-belt asteroid
279 Thule is a large asteroid from the outer asteroid belt. It was discovered by Austrian astronomer Johann Palisa on 25 October 1888 in Vienna. This
279_Thule
Habitability of the celestial bodies of the Solar System
greatly differs from that of Mars'. Ceres, the only dwarf planet in the asteroid belt, has a thin water-vapor atmosphere. The vapor is likely the result of
Planetary habitability in the Solar System
Planetary_habitability_in_the_Solar_System
Larger of the two moons of Mars
Earth and a significant fraction of the velocity needed to reach the asteroid belt. The space elevators could also work in reverse to help spacecraft enter
Phobos_(moon)
Main-belt asteroid
provisional designation 1998 KM41, is a background asteroid from the Flora region of the inner asteroid belt, approximately 4 kilometers (2.5 miles) in diameter
13241_Biyo
Hypothetical bodies around the Solar System
supposedly led to the formation of the asteroid belt. This hypothesis is now considered unlikely, since the asteroid belt has far too little mass to have resulted
List of hypothetical Solar System objects
List_of_hypothetical_Solar_System_objects
Double asteroid system in the outer asteroid belt
90 Antiope is a double asteroid in the outer asteroid belt. It was discovered on 1 October 1866, by Robert Luther. In 2000, it was found to consist of
90_Antiope
Natural object in space that releases gas
However, the discovery of main-belt comets and active centaur minor planets has blurred the distinction between asteroids and comets. In the early 21st
Comet
diameter). The listed objects currently include most objects in the asteroid belt and moons of the giant planets in this size range, but many newly discovered
List of Solar System objects by size
List_of_Solar_System_objects_by_size
Topics referred to by the same term
the periodic table found in bones and teeth 20 Massalia, an asteroid in the asteroid belt 20 (2nd Chapter of Acts album), 1992 20 (Cunter album), 2011
20
Classification type of a class of astronomical objects
seen in the outer asteroid belt and among the Jupiter trojans, as well as the rare T-type asteroids (96 Aegle) from the inner main-belt. 101955 Bennu is
Asteroid_spectral_types
Red supergiant star in the constellation Orion
at the center of the Solar System, its surface would lie beyond the asteroid belt and it would engulf the orbits of Mercury, Venus, Earth, and Mars. Calculations
Betelgeuse
planets such as asteroids represent a challenge for astronomical instruments to resolve. Even two of the largest objects in the asteroid belt, 2 Pallas and
List of instrument-resolved minor planets
List_of_instrument-resolved_minor_planets
Numerical model of the early Solar System
giant as it crosses the asteroid belt. Planetesimals from the outer belt are embedded in the asteroid belt as P- and D-type asteroids when their aphelion
Five-planet_Nice_model
Solar System scale model
towards Jupiter. Between Mars and Jupiter lies the asteroid belt. The obelisk representing the asteroid belt was added several years after the initial installation
Sagan_Planet_Walk
Innermost Galilean moon of Jupiter
relationship between Io and Jupiter's magnetosphere and the existence of a belt of high-energy radiation centered on Io's orbit. Further observations have
Io_(moon)
NASA orbiter mission to asteroid Vesta and dwarf planet Ceres (2007–2018)
the mission of studying two of the three known protoplanets of the asteroid belt: Vesta and Ceres. In the fulfillment of that mission—the ninth in NASA's
Dawn_(spacecraft)
Asteroid
provisional designation 1991 JT, is a background asteroid from the middle regions of the asteroid belt, approximately 7 kilometers (4.3 miles) in diameter
5380_Sprigg
Geology of Mercury, Venus, Earth, Mars and Ceres
It is similar to the asteroid belt, although it is far larger; 20 times as wide and 20–200 times as massive. Like the asteroid belt, it consists mainly
Geology of solar terrestrial planets
Geology_of_solar_terrestrial_planets
Metallic main-belt asteroid
Lilith (prov. designation: 1927 CQ) is a metallic asteroid from the middle region of the asteroid belt, approximately 23 kilometers (14 miles) in diameter
1181_Lilith
Main-belt asteroid
Candy (prov. designation: 1980 VN) is a background asteroid from the outer regions of the asteroid belt, approximately 25 kilometers (16 miles) in diameter
3015_Candy
First spacecraft to visit Saturn (1973–1995)
a NASA robotic space probe launched on April 5, 1973, to study the asteroid belt, the environment around Jupiter and Saturn, the solar wind, and cosmic
Pioneer_11
Largest moon of Saturn
chemical and photochemical modeling on Earth. It is hypothesized that large asteroid and cometary impacts on Earth's surface may have caused fragments of microbe-laden
Titan_(moon)
Main-belt asteroid
provisional designation 1981 ER22, is a background asteroid from the inner regions of the asteroid belt, approximately 3 kilometers (2 miles) in diameter
4432_McGraw-Hill
Asteroid in the asteroid belt
designation 288P/2006 VW139) is a binary active asteroid and main-belt comet from the outer regions of the asteroid belt. The object was discovered by Spacewatch
(300163)_2006_VW139
American astronomer (1893–1976)
and discoverer of (58093) 1934 JP, an asteroid from the inner regions of the asteroid belt. The main-belt asteroid 1934 Jeffers was named in his honor in
Hamilton_Jeffers
Grouping of S-type asteroids
Ariadne family) is a prominent family of stony asteroids located in the inner region of the asteroid belt. It is one of the largest families with more than
Flora_family
Topics referred to by the same term
phrase used by white supremacists and neo-Nazis 14 Irene, an asteroid in the asteroid belt Rover 14, various mid-sized cars produced by Rover Hillman 14
14
Main-belt asteroid
Celestia, provisional designation 1933 DG, is a stony asteroid located in the central asteroid belt. It was discovered on 19 February 1933, by astronomer
1252_Celestia
Main-belt asteroid
provisional designation A909 TF, is a stony Eunomia asteroid from the central region of the asteroid belt, approximately 10 kilometers in diameter. It was
4358_Lynn
Main-belt asteroid
(provisional designation 2001 TC8) is a background asteroid from the central region of the asteroid belt, approximately 4 kilometers in diameter. It was
110393_Rammstein
Rapidly rotating main-belt asteroid
2025 MN45 is a rapidly rotating main-belt asteroid 0.71 kilometers (0.44 mi) in diameter, discovered by the Vera C. Rubin Observatory on 2 May 2025. It
2025_MN45
Main-belt asteroid
141 Lumen is a carbonaceous asteroid from the intermediate asteroid belt, approximately 130 kilometers in diameter. It is an identified Eunomian interloper
141_Lumen
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