99942 Apophis
Apophis is a near-Earth asteroid that worried people for a short time in December 2004. This was because observations seemed to show that it would hit the Earth in 2029. Other observations had more accurate, or better, ideas. During 2029, Apophis ...
43 Ariadne
43 Ariadne is a fairly big and bright main belt asteroid. It is the second-biggest member of the Flora asteroid family. It was found by N. R. Pogson on April 15, 1857 and named after the Greek heroine Ariadne.
Asteroid belt
The asteroid belt or main belt is a ring of small and large rocks and dust between the orbits of Mars and Jupiter. The biggest object in the asteroid belt is Ceres, a dwarf planet. The Kirkwood gaps separate the asteroid belt into several groups. ...
Asteroid moon
An asteroid moon is an asteroid that orbits or goes around another asteroid. Asteroid moons are quite rare. Only 2% of asteroids are thought to have moons. To be an asteroid moon, an asteroid has to be smaller than the object it goes around. If t ...
Asteroid spectral types
Asteroids are assigned a type based on spectral shape, color, and sometimes albedo. These types are thought to correspond to an asteroids surface composition. For small bodies which are not internally differentiated, the surface and internal comp ...
5 Astraea
5 Astraea is a big main belt asteroid. Its surface is very reflective and what its made of is probably a mixture of nickel-iron with magnesium- and iron-silicates. The adjectival form of the name, although unused, would be Astraean. Astraea was t ...
324 Bamberga
324 Bamberga is the 16th biggest asteroid in the Main asteroid belt. It was found by Johann Palisa on February 25, 1892 in Vienna, making it one of the last big asteroids found. Apart from the near-earth asteroid Eros, it was the last asteroid wh ...
298 Baptistina
298 Baptistina is a common Main belt asteroid. It was found by Auguste Charlois on September 9, 1890 in Nice. Although it has an orbit similar to the Flora family asteroids, it was found to be an unrelated asteroid. A 2007 US-Czech study decided ...
776 Berbericia
776 Berbericia is a minor planet orbiting the Sun in the asteroid belt. This main-belt asteroid was found by A. Massinger at Heidelberg January 24, 1914. It was named in honor of Adolf Berberich, a German astronomer. In the late 1990s, a network ...
C-type asteroid
C-type asteroids are asteroids made of carbonates. They are the most common variety taking up around 75% of known asteroids, and an even higher percentage in the farther part of the belt beyond 2.7 AU, which is dominated by this asteroid type. Th ...
107 Camilla
Data on 87 Sylvia from Johnstons archive maintained by W. R. Johnston 107 Camilla and S/2001 107 1, orbit data website maintained by F. Marchis. Includes orbit diagrams. Hubble Finds New Asteroid Moon SpaceDaily.com, 21-03-2001, includes discover ...
3753 Cruithne
3753 Cruithne was discovered on October 10, 1986, by Duncan Waldron on the UK Schmidt Telescope at Siding Spring Observatory, Coonabarabran, Australia. The 1983 appearance is given to Giovanni de Sanctis and Richard M. West of the European Southe ...
5335 Damocles
5335 Damocles is the main asteroid of the Damocloids, asteroids that are inactive comets of the Halley Family and long period comets. It was found in 1991 and named after Damocles, a figure of Greek mythology. When Damocles was found, in 1991 by ...
Damocloid
A damocloid is an asteroid that takes a long time to orbit the Sun. They are very similar to the periodic comets, like Halleys Comet, but a damocloid does not have a tail like a comet. They are believed to be comets that have lost their volatile ...
Dawn (spacecraft)
Dawn is an unmanned NASA space probe. It has orbited and studied the asteroid Vesta, and it is currently orbiting the dwarf planet Ceres. Both Vesta and Ceres are in the asteroid belt. Dawn is the first spacecraft to visit Ceres and the first to ...
130 Elektra
Data on 130 Elektra from Johnstons archive maintained by W. R. Johnston 130 Elektra and S/2003 130 1, orbit data website maintained by F. Marchis. Includes adaptive optics image of primary, and satellite orbit diagram.
433 Eros
433 Eros is the first Near-Earth asteroid that was found. It was named after the Greek god of love, Eros. It is an S-type asteroid about 13 × 13 × 33 km in size, the second-biggest near-Earth asteroid after 1036 Ganymed. It belongs to the Amors. ...
45 Eugenia
45 Eugenia is a big Main belt asteroid. It is famous because it is one of the first asteroids to be found to have a moon orbiting it. It is also the second known triple asteroid, after 87 Sylvia.
15 Eunomia
15 Eunomia is a very big asteroid in the closer part of the main asteroid belt. It is the biggest of the stony asteroids, and somewhere between the 8th to 12th biggest Main Belt asteroid overall. It is also the biggest member of the Eunomia famil ...
31 Euphrosyne
31 Euphrosyne is one of the biggest main belt asteroids, found by James Ferguson on September 1, 1854. It was the first asteroid found from North America. It is named after Euphrosyne, one of the Charites in Greek mythology. It is the eighth bigg ...
52 Europa
52 Europa is an asteroid. It has a diameter of 289 km, and was found on February 4, 1858 by H. Goldschmidt. It is named after Europa, one of Zeuss conquests in Greek mythology. Europa is the seventh biggest asteroid by volume and the sixth bigges ...
8 Flora
8 Flora is a big, bright, main belt asteroid. It is the closest big asteroid: no asteroid closer to the Sun has a diameter above 25 kilometres or two-elevenths that of Flora itself, and not until the tiny 149 Medusa was found was a single asteroi ...
Flora family
The Flora family of asteroids is a big group of S-type asteroids in the closer part of the main belt, whose origin and properties are not well understood right now. About 4-5% of all main belt asteroids belong to this family. Because of its poorl ...
19 Fortuna
19 Fortuna is one of the biggest main belt asteroids. It is made up of stuff similar to 1 Ceres: a darkly colored surface that is heavily space weathered and made up of primitive organic compounds, including tholins. Fortuna is 225 km in diameter ...
532 Herculina
It was found on April 20th, 1904, by Max Wolf in Heidelberg, and initially catalogued as 1904 NY. Where its name came from is not known; it may be named after the mythical Hercules, or after an unknown woman of that name. Most of the asteroids fo ...
121 Hermione
121 Hermione and S/2002 121 1, orbit data website maintained by F. Marchis. Includes adaptive optics images, orbit diagrams, and shape models. Tally of Asteroids Harboring Moons Grows Beyond 30 Space.com, 3 October 2002 Data on 121 Hermione from ...
10 Hygiea
10 Hygiea is the fourth biggest object in the asteroid belt. It is somewhat non-spherical in shape, with diameters of 350 – 500 km. Its mass is estimated to be 3% of the total mass of the asteroid belt. It is the biggest of the class of dark C-ty ...
1566 Icarus
1566 Icarus is an Apollo asteroid. At its closest approach to the Sun it is closer to the Sun than Mercury. In its orbit it crosses the orbits of Mercury, Venus and Mars. It is named after Icarus of Greek mythology, who flew too close to the Sun. ...
243 Ida
243 Ida is a Main belt asteroid with pictures taken by the Galileo spacecraft on August 28, 1993. It was the first binary asteroid to be found and is a member of the Koronis family of asteroids.
Asteroid impact prediction
Asteroid impact prediction warns about asteroids hitting Earth, and when and where they will hit the Earth. Most asteroids will not hit Earth. Asteroid impact prediction works by finding the ones that will hit Earth. It finds asteroids that might ...
704 Interamnia
704 Interamnia is a very big asteroid. Scientists think it is 350 kilometers wide. Its mean distance from the Sun is 3.067. It was found on October 2, 1910 by Vincenzo Cerulli. It is named after the Latin name for Teramo, Italy, which is where Ce ...
85 Io
85 Io is a big, dark Main belt asteroid of the C spectral class. It is probably a primitive body made of carbonates. Like 70 Panopaea it orbits within the Eunomia asteroid family but it is not related to the shattered parent body. Io is a retrogr ...
14 Irene
14 Irene is a very big Main belt asteroid. 14 Irene was found by J. R. Hind on May 19, 1851, and named after Eirene, a personification of peace in Greek mythology. She was one of the Horae, daughter of Zeus and Themis. The name was suggested by S ...
4319 Jackierobinson
4319 Jackierobinson is a main-belt asteroid discovered on March 1, 1981 by Schelte J. Bus at Siding Spring Observatory. It was found during the U.K. Schmidt-Caltech Asteroid Survey. It was named after Jackie Robinson, the first African-American m ...
3 Juno
3 Juno is a main belt asteroid discovered by Karl Ludwig Harding on September 1, 1804. Juno was the third asteroid discovered in the Solar System and is named after Juno, the Roman goddess that is the queen of all gods. Juno is an S-type asteroid ...
22 Kalliope
22 Kalliope is a big main belt asteroid of the M-type, found by J. R. Hind on November 16, 1852. It is named after Calliope, the Greek Muse of epic poetry.
Kirkwood gap
Kirkwood gaps are areas of the asteroid belt where asteroids are unusually scarce, as seen in the graph on the right. They are caused by orbital resonances with Jupiter. The gaps were first noticed in 1857 by Daniel Kirkwood, who also correctly e ...
216 Kleopatra
216 Kleopatra is a Main belt asteroid found by Johann Palisa on April 10, 1880 in Pola. It is named after Cleopatra, the Queen of Egypt. Kleopatra is an unusual object. Its odd shape was revealed by adaptive optics on the ESO 3.6m telescope at La ...
809 Lundia
809 Lundia is a small, binary, V-type asteroid orbiting in the Flora family in the Main Belt. It is named after Lund Observatory, Sweden. The V-type spectrum says that it is not genetically related to the Flora family, but rather is probably a pi ...
20 Massalia
Massalia is an S-type asteroid. It orbits at very low inclination in the intermediate main belt, and is by far the biggest asteroid in the Massalia family. The remaining family members are pieces blown off by a cratering event on Massalia Massali ...
253 Mathilde
253 Mathilde is a main belt asteroid found by Johann Palisa in 1885. It has a fairly elliptical orbit that takes more than four years to circle the Sun. This asteroid has an unusually slow rate of rotation, taking 17.4 days to complete a 360° rev ...
9 Metis
For the moon of Jupiter, see Metis moon. 9 Metis is one of the biggest main belt asteroids. It is made of silicates and metallic nickel-iron, and may be the core remnant of a big asteroid that was destroyed by an ancient collision.
26858 Misterrogers
26858 Misterrogers, provisional designation 1993 FR, is a Mars crossing asteroid. It is named after childrens television host Fred Rogers. Rogers, who had a lifelong passion with the sky and astronomy, got a pilots license while still in high sch ...
Near-Earth asteroid
Near-Earth asteroids are asteroids whose orbits are close to Earths orbit. A few tens of thousands have been found. Sometimes one crashes into earth. We try to find out if any are going to hit Earth using Asteroid impact prediction. Two near-Eart ...
1223 Neckar
1223 Neckar is a main-belt asteroid and a member of the Koronis Family of asteroids. It was discovered by K. Reinmuth on October 6, 1931. It was named for the German river Neckar.
7066 Nessus
7066 Nessus is a centaur that was found by David L. Rabinowitz, working with Spacewatch, at Kitt Peak on 26 April, 1993. It was the second centaur found by him, and the third centaur to be found. It was officially announced on May 13, 1993 in IAU ...
659 Nestor
659 Nestor is a Jupiter trojan asteroid orbiting the Sun. Along with the other Jupter trojans in the Greek Camp, it orbits in the same orbit as Jupiter, about 60 degrees ahead of the planet. It was seen on 30th June 2006 when it occulted TYC 6854 ...
2 Pallas
2 Pallas is the second asteroid discovered in the solar system. It was discovered by Heinrich Wilhelm Matthaus Olbers on March 28, 1802. 2 Pallas is named after Pallas Athena, an alternate name for the goddess Athena. 2 Pallas has a mass estimate ...
3200 Phaethon
3200 Phaethon, sometimes incorrectly spelt Phaeton, is an Apollo asteroid and a dead comet. It was announced on 14 October 1983 in IAUC 3878, with optical confirmation that it looks like an asteroid. It was the first asteroid to be found by a spa ...
5145 Pholus
5145 Pholus is a Centaur of the solar system running in a stretched orbit, with a perihelion less than Saturns and aphelion farther than Neptunes. Close approaches of the object are not common: it has not come within one astronomical unit of a pl ...
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16 Psyche |
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S-type asteroid |
Standard asteroid physical characteri .. |
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87 Sylvia |
279 Thule |
V-type asteroid |
490 Veritas |
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4 Vesta |
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Vulcanoid asteroid |
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Comet |
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List of comets |
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19P/Borrelly |
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3D/Biela |
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81P/Wild |
Comet Borrelly |
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C/1980 E1 |
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Caesars Comet |
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Comet Hale–Bopp |
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Comet NEOWISE |
Comet Shoemaker–Levy 9 |
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Comet Swift–Tuttle |
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Comet West |
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Great Comet of 1811 |
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Halleys Comet |
Hyakutake |
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Non-periodic comet |
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Periodic comet |
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Tempel 1 |
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Galaxy |
List of galaxies |
List of nearest galaxies |
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Antennae galaxies |
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Black hole |
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Circinus galaxy |
Cloverleaf quasar |
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Dark matter |
GN-z11 |
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Gravitational lensing |
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Hubble Deep Field |
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Hubble Ultra-Deep Field |
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Irregular galaxy |
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Mice galaxies |
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Most distant things |
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Phoenix Dwarf |
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Pinwheel galaxy |
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Quasar |
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Radio galaxy |
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Seyfert galaxy |
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Supermassive black hole |
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UDFj-39546284 |
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UDFy-38135539 |
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Zone of Avoidance |
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Galaxy cluster |
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Abell 2029 |
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Abell 2142 |
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Bullet cluster |
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Galaxy group |
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Great Attractor |
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CfA2 Great Wall |
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Hercules–Corona Borealis Great Wall |
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Local Group |
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Norma Cluster |
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Ophiuchus Supercluster explosion |
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Shapley Supercluster |
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Stephans Quintet |
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Supercluster |
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Virgo Cluster |
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Virgo Supercluster |
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Meteor |
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Meteor shower |
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Achondrite |
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Allan Hills 84001 |
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Ca-Al-rich inclusions |
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Chelyabinsk meteor |
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Eucrite |
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HED meteorite |
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K/T extinction event |
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Lunar meteorite |
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Meteor burst communication |
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Meteorite strewnfield |
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Murchison meteorite |
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Permian–Triassic extinction event |
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Perseids |
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Rochechouart crater |
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Natural satellite |
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Crescent |
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Dysnomia (moon) |
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Icy moon |
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Menoetius (moon) |
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Moons of Haumea |
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Nebula |
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Barnards Loop |
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Carina nebula |
Cave nebula |
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Coalsack nebula |
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Crab Nebula |
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Dumbbell nebula |
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Eagle nebula |
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Emission nebula |
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Flame nebula |
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