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Bodies orbiting within the main asteroid belt which have shown cometary activity
Active asteroids are small Solar System bodies that have asteroid-like orbits but show comet-like visual characteristics. That is, they show a coma, tail
Active_asteroid
Minor planet found within the inner Solar System
near-Earth asteroid 469219 Kamoʻoalewa and the active asteroid 311P/PanSTARRS and collecting samples of the regolith of Kamo'oalewa. Near-Earth asteroids have
Asteroid
2021 NASA planetary defense mission
deflect an asteroid by hitting it head-on. The target asteroid, Dimorphos, is a 525 feet (160 m) wide moonlet of the asteroid Didymos; neither asteroid poses
Double Asteroid Redirection Test
Double_Asteroid_Redirection_Test
NSF-funded citizen science project
Active Asteroids is a NASA partner citizen science project that successfully discovered active asteroids, including main-belt comets, quasi-Hilda objects
Active Asteroids (citizen science project)
Active_Asteroids_(citizen_science_project)
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
Carbonaceous Apollo asteroid
101955 Bennu (provisional designation 1999 RQ36) is a carbonaceous asteroid in the Apollo group discovered by the LINEAR Project on 11 September 1999.
101955_Bennu
Dwarf planet in the asteroid belt
dwarf 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)
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
Moon of asteroid Didymos
years. By smashing into the asteroid DART made Dimorphos an active asteroid. Scientists had proposed that some active asteroids are the result of impact
Dimorphos
Collision of two astronomical objects
regularly occur in planetary systems, though the most frequent involve asteroids, comets or meteoroids and have minimal effect. When large objects impact
Impact_event
National space agency of the People's Republic of China
is en route to explore the co-orbital near-Earth asteroid 469219 Kamoʻoalewa and the active asteroid 311P/PanSTARRS. It will also collect regolith samples
China National Space Administration
China_National_Space_Administration
Active main belt asteroid
SY178 is an unnamed active asteroid located in the outer main asteroid belt. It was discovered by the Lincoln Near-Earth Asteroid Research (LINEAR) project
(62412)_2000_SY178
Periodic comet
324P/La Sagra is an active asteroid with an orbital period of 5.44 years. It has been found to be active in more than one perihelia, indicating that the
324P/La_Sagra
Active asteroid
small main-belt asteroid that was impacted by another asteroid sometime before 2010. It was discovered by the Lincoln Near-Earth Asteroid Research (LINEAR)
354P/LINEAR
Larger of the two moons of Mars
that the many grooves on Phobos were caused by boulders ejected from the asteroid impact that created Stickney crater. These boulders rolled in a predictable
Phobos_(moon)
Periodic comet
Tendulkar; et al. (2015). "Fast Rotation and Trailing Fragments of the Active Asteroid P/2012 F5 (Gibbs)". The Astrophysical Journal Letters. 802 (1): 8–14
331P/Gibbs
Active main belt asteroid
that it has multiple tails, making it an active asteroid. It was subsequently realised that it had been active since at least 2013. Gault is a core member
6478_Gault
Active asteroid and periodic comet
311P/PanSTARRS, also known as P/2013 P5 (PanSTARRS), is an active asteroid and Encke-type comet discovered by Bryce T. Bolin using the Pan-STARRS telescope
311P/PanSTARRS
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)
objects Asteroid belt Trojans Venus Earth Mars Jupiter Uranus Neptune Centaurs Active asteroids Asteroid moons Meteoroids Naming Meanings of asteroid names
Lists_of_planets
Two asteroids that were once in binary
An asteroid pair, or (if more than two bodies) an asteroid cluster, are asteroids which at some point in the past had very small relative velocities, and
Asteroid_pair
Periodic comet and active asteroid
259P/Garradd is a Jupiter-family comet and active asteroid with an orbital period of 4.5 years. It was discovered in images obtained on 2 September 2008
259P/Garradd
Active asteroid
P/2016 G1 (PanSTARRS) was a main-belt asteroid that was destroyed by an impact event on 6 March 2016. It was discovered by Robert Weryk and Richard Wainscoat
P/2016_G1_(PanSTARRS)
Asteroid responsible for the Geminids meteor shower
an active Apollo asteroid with an orbit that brings it closer to the Sun than any other named asteroid (though there are numerous unnamed asteroids with
3200_Phaethon
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
Periodic comet with 4 year orbit
4015 Wilson–Harrington is an active asteroid known both as comet 107P/Wilson–Harrington and as asteroid 4015 Wilson–Harrington. It passed 0.4 AU (60 million km)
4015_Wilson–Harrington
Astronomical object in the Solar System
characteristics of both asteroids and comets, and is the prototype of active asteroids. Its orbit keeps it within the asteroid belt, yet it displayed a
7968_Elst–Pizarro
Active asteroid in the outer main belt
QN173 was found to be active by the Asteroid Terrestrial-impact Last Alert System survey. Archival imagery showed it had been active during a previous perihelion
(248370)_2005_QN173
Asteroid
provisional designation 1947 XC, is a stony and extremely eccentric active asteroid and sizable near-Earth object of the Apollo group, approximately 2
2201_Oljato
Water and its precursors in asteroids
Asteroidal water is water or water precursor deposits such as hydroxide (OH−) that exist in asteroids (i.e., small Solar System bodies (SSSBs) not explicitly
Asteroidal_water
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
(2021-04-22), "(6478) Gault: Physical characterization of an active main-belt asteroid", Monthly Notices of the Royal Astronomical Society, 505: 245–258
List of Solar System objects by size
List_of_Solar_System_objects_by_size
Asteroid and main-belt comet
designation 176P/LINEAR) is an active asteroid and main-belt comet that was discovered by the Lincoln Near-Earth Asteroid Research (LINEAR) 1-metre telescopes
118401_LINEAR
Active asteroid
2010 LH15 is an unnamed active asteroid located in the outer main asteroid belt. It was first discovered by the Wide-field Infrared Survey Explorer satellite
2010_LH15
Active main belt asteroid
2009 DQ118 is an unnamed active asteroid located in the outer main asteroid belt. It was initially reported on 27 February 2009 by the Spacewatch survey
2009_DQ118
have been visited by robotic spacecraft. A total of 19 minor planets (asteroids, dwarf planets, and Kuiper belt objects) have been visited by space probes
List of minor planets and comets visited by spacecraft
List_of_minor_planets_and_comets_visited_by_spacecraft
Periodic comet and active asteroid
periodic comet and an active asteroid with a 5.65-year orbit around the Sun. It is the second comet discovered by the Asteroid Terrestrial-impact Last
427P/ATLAS
with an altitude of 21.9 to 26 km. The central peak of Rheasilvia on the asteroid Vesta is also a candidate to be the tallest, with an estimated height between
List of tallest mountains in the Solar System
List_of_tallest_mountains_in_the_Solar_System
Periodic comet
5.6-year orbit around the Sun within the main asteroid belt. It is also considered an active asteroid, whose orbit suggested it may belong to the Theobalda
455P/PanSTARRS
Pair of active asteroids
483P/PanSTARRS (provisional designation P/2016 J1) is a pair of active main-belt asteroids that split apart from each other in early 2010. The brighter and
483P/PanSTARRS
Disintegrated active main-belt asteroid
P/2013 R3 (Catalina–PanSTARRS) was an active main-belt asteroid that disintegrated from 2013 to 2014 due to the centrifugal breakup of its rapidly-rotating
P/2013 R3 (Catalina–PanSTARRS)
P/2013_R3_(Catalina–PanSTARRS)
bodies Minor planets Designation Groups List Moon Meanings of names Asteroid Active Asteroid belt Family Jupiter trojan Near-Earth Amors Apollos Atens Atiras
List of Uranus-crossing minor planets
List_of_Uranus-crossing_minor_planets
objects Asteroid belt Trojans Venus Earth Mars Jupiter Uranus Neptune Centaurs Active asteroids Asteroid moons Meteoroids Naming Meanings of asteroid names
List of largest craters in the Solar System
List_of_largest_craters_in_the_Solar_System
bodies Minor planets Designation Groups List Moon Meanings of names Asteroid Active Asteroid belt Family Jupiter trojan Near-Earth Amors Apollos Atens Atiras
List of Neptune-crossing minor planets
List_of_Neptune-crossing_minor_planets
Natural object in space that releases gas
the discovery of main-belt comets and active centaur minor planets has blurred the distinction between asteroids and comets. In the early 21st century
Comet
Binary near-Earth asteroid
provisional designation 1999 KW4, is a binary asteroid, classified as a near-Earth object and potentially hazardous asteroid of the Aten group, approximately 1.3
66391_Moshup
Main-belt asteroid
main-belt asteroid and main-belt comet orbiting the Sun. It was discovered on 21 February 1906 by August Kopff from Heidelberg. Kopff named the asteroid after
596_Scheila
Periodic comets numbered by the Minor Planet Center
main-belt comets, two centaurs (CEN), and one Apollo asteroid – and display characteristics of both an asteroid and a comet. Occasionally, comets will break up
List_of_numbered_comets
Chinese asteroid and comet exploration mission
‹See RfD› Tianwen-2 (Chinese: 天问二号) is a Chinese asteroid sample return and comet exploration mission that launched on 28 May 2025. It is the second mission
Tianwen-2
Methods to prevent destructive asteroid hits
Asteroid impact avoidance encompasses the methods by which near-Earth objects (NEO) on a potential collision course with Earth could be diverted, preventing
Asteroid_impact_avoidance
Form of electric spacecraft propulsion
explore the co-orbital near-Earth asteroid 469219 Kamoʻoalewa and the active asteroid 311P/PanSTARRS and collecting samples of the regolith of Kamo'oalewa
Ion_thruster
Citizen science platform
"Astronomer recruiting volunteers in effort to quadruple number of known active asteroids". The NAU Review. Archived from the original on 1 September 2021. Retrieved
Zooniverse
objects Asteroid belt Trojans Venus Earth Mars Jupiter Uranus Neptune Centaurs Active asteroids Asteroid moons Meteoroids Naming Meanings of asteroid names
List of largest rifts, canyons and valleys in the Solar System
List_of_largest_rifts,_canyons_and_valleys_in_the_Solar_System
Branch of astronomy
of the siliceous crust. These asteroid types are the parents of the respective meteorite classes. Recently Active asteroid have been observed that eject
Dust_astronomy
objects Asteroid belt Trojans Venus Earth Mars Jupiter Uranus Neptune Centaurs Active asteroids Asteroid moons Meteoroids Naming Meanings of asteroid names
List_of_Solar_System_extremes
oceans or seas are suspected to exist on some of Saturn's other moons, the asteroid Ceres, the larger trans-Neptunian objects, and ice planets in planetary
List of largest lakes and seas in the Solar System
List_of_largest_lakes_and_seas_in_the_Solar_System
Near-Earth object and potentially hazardous asteroid
2017 QC36 is a near-Earth object and a potentially hazardous asteroid of the Aten group, It measures approximately 200 meters (660 feet) in diameter and
2017_QC36
Main-belt comet
telescope on Kitt Peak National Observatory. It has an orbit within the asteroid belt and has displayed the coma of a traditional comet. It fits the definition
238P/Read
Future mission to asteroid 99942 Apophis
a future European-Japanese planetary defense mission to the near-Earth asteroid (99942) Apophis, led by the European Space Agency (ESA). It is expected
Ramses_(spacecraft)
Asteroids found outside of the Solar System
An exoasteroid, exo-asteroid, or extrasolar asteroid, is an asteroid located outside the Solar System. Scientists suggest that exoasteroids may form through
Exoasteroid
Collaboration with a result open to all
Read Kialo r/place COVID Moonshot eBird Foldit Galaxy Zoo iNaturalist Active Asteroids Backyard Worlds: Planet 9 Disk Detective Galaxy Zoo Gems of the Galaxy
Open_collaboration
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
Eccentric near-Earth asteroid
2005 UD passed 0.0558 AU (8.35 million km) from Mars on 20 July 2024. Active asteroid (196256) 2003 EH1, a suspected extinct comet and proposed parent body
(155140)_2005_UD
Mars-crosser asteroid
Mars-crossing asteroid that was previously thought to be a near-Earth object. It was first observed on 25 September 2017, when the asteroid was less than
2017_SG33
Trans-Neptunian object
blog. Planetary Society. Archived from the original on 15 October 2014. "Asteroid Size Estimator". CNEOS NASA/JPL. Retrieved 9 February 2018. Verbiscer,
2014_PN70
Pair of main-belt asteroids
(796785) 2010 RN221 are a pair of main-belt asteroids that have identical orbits around the Sun. These two asteroids are thought to have dissociated from a
(458271) 2010 UM26 and (796785) 2010 RN221
(458271)_2010_UM26_and_(796785)_2010_RN221
in May 2025, to explore the co-orbital near-Earth asteroid 469219 Kamoʻoalewa and the active asteroid 311P/PanSTARRS and collecting samples of the regolith
Chinese_space_program
American space probe to asteroid (1996–2001)
Near Earth Asteroid Rendezvous – Shoemaker (NEAR Shoemaker), renamed after its 1996 launch in honor of planetary scientist Eugene Shoemaker, was a robotic
NEAR_Shoemaker
Near-Earth object and Amor asteroid
February 25, 2017, when the asteroid was less than 1 AU from Earth and had a solar elongation of 169°. This asteroid is a lost asteroid. It has a short observation
2017_DB120
Main-belt comet
cometary designation 282P/2003 BM80, is an asteroid and main-belt comet from the outer regions of the asteroid belt, approximately 9.4 kilometers (5.8 miles)
(323137)_2003_BM80
Small Solar System body with an orbit that can bring it close to Earth
known PHOs and NEOs are asteroids, but about a third of a percent are comets. There are over 37,000 known near-Earth asteroids (NEAs) and over 120 known
Near-Earth_object
Index of articles associated with the same name
discovered three comets between 1949 and 1952: 107P/Wilson–Harrington, an active asteroid also known as 4015 Wilson–Harrington C/1951 P1 (Wilson–Harrington)
Comet_Wilson
Eccentric near-Earth asteroid
eccentric asteroid, classified as a near-Earth object of the Amor group, Mars-crosser and Jupiter-crosser, as well as a weakly active comet. The asteroid was
3552_Don_Quixote
I. S.; Shakhovskoi, D. N.; Müller, A.; Moerchen, M. (2013-05-01). "Active asteroid belt causes the UXOR phenomenon in RZ Piscium". Astronomy and Astrophysics
List of extrasolar planetary collisions
List_of_extrasolar_planetary_collisions
Interstellar object that passed near Earth in 2017
astronomers reported that ʻOumuamua was thought to be a mildly active comet, and not an asteroid, as previously thought. This was determined by measuring a
1I/ʻOumuamua
Near-Earth object and potentially hazardous asteroid
2017 MZ8 is a near-Earth object and a potentially hazardous asteroid, meaning that it has an orbit that can make close approaches to the Earth and large
2017_MZ8
Topics referred to by the same term
Texas 10028 Bonus, a main belt asteroid Bonus (patrician) (6th-century–627), Byzantine statesman and general, active in the reign of Heraclius Bonus
Bonus
Classical Kuiper belt object
icarus.2019.01.025. S2CID 119192900. "MinorPlanet.info: One Asteroid Information". Asteroid Lightcurve Database (LCDB). Retrieved 7 September 2021. Search
2014_OS393
Cold classical Kuiper belt object
bodies Minor planets Designation Groups List Moon Meanings of names Asteroid Active Asteroid belt Family Jupiter trojan Near-Earth Amors Apollos Atens Atiras
2014_MT69
Citizen science project
at Kitt Peak National Observatory as of March 2026. Backyard Worlds Active Asteroids (citizen science project) Disk Detective Galaxy Zoo Planet Hunters
The_Daily_Minor_Planet
Japanese space mission to asteroid Ryugu
asteroid sample-return mission operated by the Japanese state space agency JAXA. It is a successor to the Hayabusa mission, which returned asteroid samples
Hayabusa2
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
comets, but orbit the Sun. Most missions to minor planets have been to asteroids or dwarf planets. Spacecraft visits to minor planets have mostly been
List of missions to minor planets
List_of_missions_to_minor_planets
minor planets Asteroids in the asteroid belt, between the orbits of Mars and Jupiter Ceres, a dwarf planet Vesta Pallas Hygiea Europa (asteroid) Davida Sylvia
List_of_Solar_System_objects
Near-Earth object and Atira asteroid
2015 ME131 was a lost asteroid and a Near-Earth object (NEO). It is an Atira asteroid, which is by far the smallest group of near-Earth objects. This
2015_ME131
White dwarf
surface are heated and eject overlaying material (similar to some active asteroids in the Solar System) An exocomet with deep pits that preserve volatiles
ZTF_J0328−1219
interplanetary and interstellar dust measurements en route to the active asteroid (3200) Phaethon". Planetary and Space Science. 172: 22–42. arXiv:1904
Space_dust_measurement
Near-Earth asteroid
2020 CW is a tiny near-Earth asteroid of the Apollo group, approximately 1 meter (3 ft) in diameter. It was first observed by the Mount Lemmon Survey on
2020_CW
Operating system
AsteroidOS is an open source operating system designed for smartwatches. It is available as a firmware replacement for some Android Wear devices. The motto
AsteroidOS
Binary Kuiper belt object
of Transneptunian Objects, Minor Planet Center 2011 JY31 at AstDyS-2, Asteroids—Dynamic Site Ephemeris · Observation prediction · Orbital info · Proper
2011_JY31
Near-Earth object and potentially hazardous object
2016, when the asteroid was more than 1 AU from Earth and had a solar elongation of 163 degrees. This asteroid had been a lost asteroid until its rediscovery
(696513)_2016_NL56
Annual meteor shower
originated from Comet Encke, while the Northern Taurids originated from the asteroid 2004 TG10, possibly a large fragment of Encke due to its similar orbital
Taurids
Prediction of the dates and times of asteroids impacting Earth
Asteroid impact prediction is the prediction of the dates and times of asteroids impacting Earth, along with the locations and severities of the impacts
Asteroid_impact_prediction
Main-belt asteroid
dark main-belt asteroid 46 km in diameter. Griseldis is suspected of having been impacted by another asteroid in March 2015. Other asteroids suspected of
493_Griseldis
Program to discover near-Earth objects
Near-Earth Asteroid Tracking (NEAT) was a program run by NASA and the Jet Propulsion Laboratory, surveying the sky for near-Earth objects. NEAT was conducted
Near-Earth_Asteroid_Tracking
Near-Earth asteroid that fell over Russia in 2013
approximately 18-meter (60 ft), 9,100-tonne (10,000-short-ton) near-Earth asteroid that entered the atmosphere at a shallow 18‐degree angle with a speed relative
Chelyabinsk_meteor
Free online crowdsourced encyclopedia
temporarily replaced its content. In January 2013, 274301 Wikipedia, an asteroid, was named after Wikipedia; in October 2014, Wikipedia was honored with
Wikipedia
Amateur astronomer who discovered the first known interstellar comet
later independently discovered and confirmed by scientists of the Active Asteroids project. In early 2019, Borisov completed his new 0.65-meter telescope
Gennadiy_Borisov
Topics referred to by the same term
303P/NEAT 312P/NEAT 334P/NEAT 368P/NEAT 370P/NEAT 433P/2005 QN173, also an active asteroid discovered by the NEAT survey 502P/NEAT P/2001 H5 (NEAT) P/2003 F2
Comet_NEAT_(disambiguation)
2026 video game
to their senses. Robot's analysis determines that the facility is on an asteroid near the Earth, but the group are unable to find a way to escape. Cecil
Invincible_VS
ACTIVE ASTEROID
ACTIVE ASTEROID
Male
English
Pet form of English Ace, ACIE means "number one."
Boy/Male
English
Active.
Boy/Male
Indian
Active
Boy/Male
Muslim
Active
Boy/Male
English
Active.
Boy/Male
Teutonic American English
Active.
Boy/Male
Polish
Active.
Boy/Male
English
Active.
Surname or Lastname
English
English : habitational name from any of various places, for example in Shropshire and Cheshire, named Clive, from the dative case of Old English clif ‘slope’, ‘bank’, ‘cliff’ (see Cliff), originally used after a preposition. In some cases the name may be topographical, with the same origin and meaning.
Girl/Female
German
Active.
Male
English
English pet form of Celtic Arthur, possibly ARTIE means "bear-man."Â
Girl/Female
Greek
Active.
Male
English
English surname transferred to forename use, from the name of various places, derived from Old English clif, CLIVE means "bank, cliff, slope."
Girl/Female
Greek
Active.
Boy/Male
British, English, Indian, Russian
Work
Girl/Female
Hindi
Active.
Boy/Male
French American
Born eighth.
Girl/Female
Slavic
Active.
Girl/Female
German
Active.
Girl/Female
German
Active.
ACTIVE ASTEROID
ACTIVE ASTEROID
Boy/Male
Tamil
Glorified
Boy/Male
Australian, British, Danish, English, French, Swedish
From the Moor Town; From the God Mars
Biblical
right; singing
Male
English
Variant spelling of English Lorne, of unknown LORN means.
Boy/Male
Australian, Hebrew
Humorous; Laughter
Boy/Male
Arabic, Muslim
Favour of Allah
Boy/Male
American, Indian
Bear
Girl/Female
Tamil
Chithanyalatha | சீதாநà¯à®¯à®²à®¾à®¤à®¾Â
Boy/Male
Arabic, Muslim, Pakistani
Right Side
Girl/Female
Hindu
Name of a Raga
ACTIVE ASTEROID
ACTIVE ASTEROID
ACTIVE ASTEROID
ACTIVE ASTEROID
ACTIVE ASTEROID
adv.
In an active signification; as, a word used actively.
n.
Action.
a.
Not active; inert; esp., not exhibiting any action or activity on polarized light; optically neutral; -- said of isomeric forms of certain substances, in distinction from other forms which are optically active; as, racemic acid is an inactive tartaric acid.
a.
In action; actually proceeding; working; in force; -- opposed to quiescent, dormant, or extinct; as, active laws; active hostilities; an active volcano.
a.
Not active; having no power to move; that does not or can not produce results; inert; as, matter is, of itself, inactive.
a.
Given to action rather than contemplation; practical; operative; -- opposed to speculative or theoretical; as, an active rather than a speculative statesman.
a.
Applied to all verbs that express action as distinct from mere existence or state.
v. t.
To make active.
a.
Quick in physical movement; of an agile and vigorous body; nimble; as, an active child or animal.
a.
Having the power or quality of acting; causing change; communicating action or motion; acting; -- opposed to passive, that receives; as, certain active principles; the powers of the mind.
a.
Not disposed to action or effort; not diligent or industrious; not busy; idle; as, an inactive officer.
a.
Applied to a form of the verb; -- opposed to passive. See Active voice, under Voice.
a.
Requiring or implying action or exertion; -- opposed to sedentary or to tranquil; as, active employment or service; active scenes.
a.
Brisk; lively; as, an active demand for corn.
a.
Doing; active.
a.
Given to action; constantly engaged in action; energetic; diligent; busy; -- opposed to dull, sluggish, indolent, or inert; as, an active man of business; active mind; active zeal.
a.
Acting in concurrence; united in action.
n.
Any one of the active processes going on in an organism; the performance of a function; as, the action of the heart, the muscles, or the gastric juice.
a.
Implying or producing rapid action; as, an active disease; an active remedy.
adv.
In an active manner; nimbly; briskly; energetically; also, by one's own action; voluntarily, not passively.