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Encyclopedia > 28978 Ixion
28978 Ixion
Discovery
Discovered by: Deep Ecliptic Survey
Discovery date: 22 May 2001
Orbital characteristics
Epoch December 31, 2006 (JD 2454100.5)
Aphelion distance: 7370.503 Gm (49.269 AU)
Perihelion distance: 4501.495 Gm (30.091 AU)
Semi-major axis: 5935.999 Gm (39.680 AU)
Eccentricity: 0.242
Orbital period: 91295.847 d (249.95 a)
Avg. orbital speed: 4.66 km/s
Mean anomaly: 268.546°
Inclination: 19.584°
Longitude of ascending node: 71.028°
Argument of perihelion: 298.779°
Physical characteristics
Dimensions: <822 km diameter
Surface area: <2.24×106 km²
Volume: <3.15×108 km³
Mass: <5.8×1020? kg
Mean density: 2.0? g/cm³
Equatorial surface gravity: <0.2297? m/s²
Escape velocity: <0.4346? km/s
Rotation period: ? d
Albedo: 0.15
Temperature: ~44 K
Spectral type: (moderately red; B-V=1.03, V-R=0.61)
Absolute magnitude: 3.244

28978 Ixion (IPA pronunciation: [ɪk'saɪ.ɒn], Wiktionary:Ixion) is a Kuiper belt object discovered on May 22, 2001. Ixion is a plutino (an object that has a 2:3 orbital resonance with Neptune); its estimated diameter of 800 km makes it the second largest plutino. It is named after Ixion, a figure from Greek mythology; it previously had the provisional designation 2001 KX76. The Deep Ecliptic Survey is a project to find Kuiper belt objects, using the facilities of the National Optical Astronomy Observatory. ... May 22 is the 142nd day of the year (143rd in leap years) in the Gregorian calendar. ... 2001 (MMI) was a common year starting on Monday of the Gregorian calendar. ... m. ... In astronomy, an epoch is a moment in time for which celestial coordinates or orbital elements are specified. ... December 31 is the 365th day of the year (366th in leap years) in the Gregorian calendar. ... For the Manfred Mann album, see 2006 (album). ... The Julian day or Julian day number (JDN) is the (integer) number of days that have elapsed since Monday, January 1, 4713 BC in the proleptic Julian calendar [1]. That day is counted as Julian day zero. ... A diagram of Keplerian orbital elements. ... A diagram of Keplerian orbital elements. ... The semi-major axis of an ellipse In geometry, the term semi-major axis (also semimajor axis) is used to describe the dimensions of ellipses and hyperbolae. ... Look up giga- in Wiktionary, the free dictionary. ... The or meter (see spelling differences) is a measure of length. ... The astronomical unit (AU or au or a. ... (This page refers to eccitricity in astrodynamics. ... The orbital period is the time it takes a planet (or another object) to make one full orbit. ... Look up day in Wiktionary, the free dictionary. ... In astronomy, a Julian year is a unit of time defined as exactly 365. ... The orbital speed of a body, generally a planet, a natural satellite, an artificial satellite, or a multiple star, is the speed at which it orbits around the barycenter of a system, usually around a more massive body. ... Look up second in Wiktionary, the free dictionary. ... In the study of orbital dynamics the mean anomaly is a measure of time, specific to the orbiting body p, which is a multiple of 2&#960; radians at and only at periapsis. ... Inclination in general is the angle between a reference plane and another plane or axis of direction. ... A degree (in full, a degree of arc, arc degree, or arcdegree), usually symbolized °, is a measurement of plane angle, representing 1／360 of a full rotation. ... The Longitude of the ascending node (☊, also noted Ω) is one of the orbital elements used to specify the orbit of an object in space. ... The argument of periapsis (ω) is the orbital element describing the angle between an orbiting bodys ascending node (the point where the body crosses the plane of reference from South to North) and its periapsis (the point of closest approach to the central body), measured in the orbital plane and... km redirects here. ... In mathematics, a spheroid is a quadric surface in three dimensions obtained by rotating an ellipse about one of its principal axes. ... The volume of a solid object is the three-dimensional concept of how much space it occupies, often quantified numerically. ... Unsolved problems in physics: What causes anything to have mass? The U.S. National Prototype Kilogram, which currently serves as the primary standard for measuring mass in the U.S. Mass is the property of a physical object that quantifies the amount of matter and energy it is equivalent to. ... The U.S. National Prototype Kilogram, which currently serves as the primary standard for measuring mass in the U.S. It was assigned to the United States in 1889 and is periodically recertified and traceable to the primary international standard, The Kilogram, held at the Bureau International des Poids et... In physics, density is mass m per unit volume V. For the common case of a homogeneous substance, it is expressed as: where, in SI units: ρ (rho) is the density of the substance, measured in kg·m-3 m is the mass of the substance, measured in kg V is... A cubic centimetre (cm3) is an SI derived unit of volume, equal to the volume of a cube with side length of 1 centi metre. ... The surface gravity of a Killing horizon is the acceleration, as exerted at infinity, needed to keep an object at the horizon. ... Space Shuttle Atlantis launches on mission STS-71. ... In astronomy, a rotation period is the time an astronomical object takes to complete one revolution around its rotation axis. ... Albedo is the ratio of reflected to incident electromagnetic radiation power. ... Fig. ... The kelvin (symbol: K) is a unit increment of temperature and is one of the seven SI base units. ... In astronomy, absolute magnitude is the apparent magnitude, m, an object would have if it were at a standard luminosity distance away from us, in the absence of interstellar extinction. ... Articles with similar titles include the NATO phonetic alphabet, which has also informally been called the “International Phonetic Alphabet”. For information on how to read IPA transcriptions of English words, see IPA chart for English. ... Artists rendering of the Kuiper Belt and hypothetical more distant Oort cloud. ... May 22 is the 142nd day of the year (143rd in leap years) in the Gregorian calendar. ... 2001 (MMI) was a common year starting on Monday of the Gregorian calendar. ... In astronomy, a plutino is a trans-Neptunian object that has a 3:2 orbital resonance with Neptune. ... In celestial mechanics, an orbital resonance occurs when two orbiting bodies exert a regular, periodic gravitational influence on each other. ... DIAMETER is an AAA protocol (Authentication, Authorization and Accounting) succeeding its predecessor RADIUS. // The name is a pun on the RADIUS protocol, which is the predecessor (a diameter is twice the radius). ... This article is about the Greek myth. ... The bust of Zeus found at Otricoli (Sala Rotonda, Museo Pio-Clementino, Vatican) Greek mythology is the body of stories belonging to the ancient Greeks concerning their gods and heroes, the nature of the world and their own cult and ritual practices. ... The provisional designation of comets and asteroids are similar to each other: they both follow a pattern set in 1925 by the Minor Planet Center of the IAU. Historical designations At first, astronomers strove to assign symbols to the minor planets: 1 Ceres a stylized sickle 2 Pallas a lozenge...

Contents

Physical characteristics

Ixion is moderately red (slightly redder than 50000 Quaoar) and it has a higher albedo (0.15) than the mid-sized red cubewanos. 50000 Quaoar (pronounced kwaa·waar or kwow·ər, English IPA: , Tongva ) [2] is a Trans-Neptunian object orbiting the Sun in the Kuiper belt. ... Albedo is the ratio of reflected to incident electromagnetic radiation power. ... A cubewano is any substantial Kuiper belt object, orbiting beyond about 41 AU and not controlled by resonances with the outer planets. ...


The latest spectroscopic results indicate that Ixion's surface is a mixture of dark carbon and tholin, which is a heteropolymer formed by irradiation of clathrates of water and organic compounds (see TNO spectra). Water ice absobtion lines (1.5 and 2μm) were absent (Licandro et al. 2002). Unlike Varuna, Ixion does not show greater reflectivity for longer waves (the so-called red slope) in infrared. A spectroscope is a device which measures the spectrum of light. ... General Name, Symbol, Number carbon, C, 6 Chemical series nonmetals Group, Period, Block 14, 2, p Appearance black (graphite) colorless (diamond) Standard atomic weight 12. ... Tholin is a heteropolymer formed by solar ultraviolet irradiation of simple organic compounds such as methane or ethane. ... A heteropolymer, also called a copolymer, is a polymer formed when two (or more) different types of monomer are linked in the same polymer chain, as opposed to a homopolymer where only one monomer is used. ... A clathrate or clathrate compound is a chemical substance consisting of a Greek klethra, meaning bars (in the sense of a lattice). ... Impact from a water drop causes an upward rebound jet surrounded by circular capillary waves. ... Benzene is the simplest of the arenes, a family of organic compounds An organic compound is any member of a large class of chemical compounds whose molecules contain carbon and hydrogen; therefore, carbides, carbonates, carbon oxides and elementary carbon are not organic (see below for more on the definition controversy... A trans-Neptunian object (TNO) is any object in the solar system that orbits the sun at a greater distance on average than Neptune. ... In optics, reflectivity is the reflectance (the ratio of reflected power to incident power, generally expressed in decibels or percentage) at the surface of a material so thick that the reflectance does not change with increasing thickness; , the intrinsic reflectance of the surface, irrespective of other parameters such as the... The wavelength is the distance between repeating units of a wave pattern. ... In astrophysics and planetary science, spectral slope is a measure of dependence of the reflectance on the wavelength. ... Image of two girls in mid-infrared (thermal) light (false-color) Infrared (IR) radiation is electromagnetic radiation of a wavelength longer than that of visible light, but shorter than that of radio waves. ...


Orbit

This diagram shows the orbits of Ixion (green), Pluto (red) and Neptune (grey). The current positions of Ixion and Pluto are indicated (as of April 2006).
This diagram shows the orbits of Ixion (green), Pluto (red) and Neptune (grey). The current positions of Ixion and Pluto are indicated (as of April 2006).


Ixion and Pluto follow similar but differently oriented orbits: Ixion’s perihelion is below the ecliptic whereas Pluto's is above it. Uncharacteristically for bodies locked in resonance with Neptune (such as Orcus), Ixion approaches Pluto with less than 20 degrees of angular separation. Ixion is currently crossing the ecliptic heading below, and will reach its perihelion in 2070. Pluto has passed its perihelion (1989) and is descending toward the ecliptic. Ixion's orbital period is almost 250 Earth years, about 0.5% larger than Pluto's. Image File history File links This is a lossless scalable vector image. ... Image File history File links This is a lossless scalable vector image. ... This article is about several astronomical terms (apogee & perigee, aphelion & perihelion, generic equivalents based on apsis, and related but rarer terms. ... The plane of the ecliptic is well seen in this picture from the 1994 lunar prospecting Clementine spacecraft. ... 90482 Orcus (originally known by the provisional designation 2004 DW) is a Kuiper Belt object (KBO) that was discovered by Michael Brown of Caltech, Chad Trujillo of the Gemini Observatory, and David Rabinowitz of Yale University. ... In mathematics (in particular geometry and trigonometry) and all natural sciences (including astronomy, geophysics, etc), the angular distance (or angular separation) between two point objects, as observed from a location different from either of these objects, is the size of the angle between the two directions originating from the observer... (Redirected from 2070) (20th century - 21st century - 22nd century - other centuries) Definition In calendars based on the Christian Era or Common Era, such as the Gregorian calendar, the 21st century is the current century, as of this writing, lasting from 2000-2099. ... 1989 (MCMLXXXIX) was a common year starting on Sunday of the Gregorian calendar. ...


See also

  • Comparison of colours of trans-Neptunian objects

A trans-Neptunian object (TNO) is any object in the solar system that orbits the sun at a greater distance on average than Neptune. ...

References

  • H. Boehnhardt, S. Bagnulo, K. Muinonen, M. A. Barucci, L. Kolokolova, E. Dotto and G. P. Tozzi (2003). "Surface characterization of 28978 Ixion (2001 KX76)". Astronomy & Astrophysics 415: L17-L19.  Pre-print about Ixion's surface from the Planetary Systems Research group of the University of Helsinki
  • J. Licandro, F. Ghinassi, L. Testi (2002). "Infrared spectroscopy of the largest known trans-neptunian object 2001 KX76". Astronomy & Astrophysics.  Pre-print on arXiv
  • W. J. Altenhoff, F. Bertoldi and K. M. Menten (2004). "Size estimates of some optically bright KBOs". Astronomy & Astrophysics 415. 

University of Helsinki is not to be confused with Helsinki University of Technology. ...

External links

  • AstDys orbital elements
  • Orbit simulation from JPL (Java).
Minor planets
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Small Solar System bodies

Vulcanoids · Near-Earth asteroids · Main belt · Jupiter Trojans · Centaurs · Damocloids · Comets · Trans-Neptunians (Kuiper belt • Scattered disc • Oort cloud) Minor planets, or asteroids or planetoids, are minor celestial bodies of the Solar system orbiting the Sun (mostly Small solar system bodies) that are smaller than major planets, but larger than meteoroids (commonly defined as being 10 meters across or less[1]), and that are not comets. ... This is a list of numbered minor planets, nearly all of the asteroids, in sequential order. ... A trans-Neptunian object (TNO) is any object in the solar system that orbits the sun at a greater distance on average than Neptune. ... In astronomy, a plutino is a trans-Neptunian object that has a 3:2 orbital resonance with Neptune. ... Adjectives: Plutonian Atmosphere Surface pressure: 0. ... (15788) 1993 SB is a trans-Neptunian object of the Plutino class. ... (15789) 1993 SC is a trans-Neptunian object of the Plutino class. ... (15810) 1994 JR1, also written as 1994 JR1, is a Plutino, with 2:3 resonance with Neptune, similar to Pluto. ... (15820) 1994 TB is a trans-Neptunian object residing in the Kuiper belt. ... (20108) 1995 QZ9, also written (20108) 1995 QZ9, is a trans-Neptunian object (TNO) that resides in the Kuiper belt. ... (19299) 1996 SZ4 (also written (19299) 1996 SZ4) is a trans-Neptunian object (TNO) that resides in the Kuiper belt. ... (15875) 1996 TP66, also written as (15875) 1996 TP66, is a trans-Neptunian object residing in the Kuiper belt. ... (118228) 1996 TQ66, also written (118228) 1996 TQ66, ia a trans-Neptunian object (TNO) that resides in the Kuiper belt. ... (24952) 1997 QJf, also written as 1997 QJ4 is as plutino, so it has a 2:3 resonance with Neptune, simalar to Pluto. ... (91133) 1998 HK151, also written as 1998 HK151 is a plutino, so it has a 2:3 resonance with Neptune, simalar to Pluto. ... (91205) 1998 US43, also written as a 1998 US43 is a plutino, so it has a 2:3 resonance with Neptune, simalar to Pluto. ... (33340) 1998 VG44 is a plutino, so it has a 2:3 resonance with Neptune, simalar to Pluto. ... (69986) 1998 WW24, also written as (69986) 1998 WW24, is a Trans-Neptunian object that resides in the Kuiper Belt. ... (69990) 1998 WU31, also written as (69990) 1998 WU31 is a TNO that resides in the Kuiper belt. ... 38083 Rhadamanthus (formerly known as (38083) 1999 HX11) is a trans-Neptunian object. ... (47171) 1999 TC36 (also written: (47171) 1999 TC36) is a trans-Neptunian object. ... 38628 Huya (original provisional designation: 2000 EB173) is a trans-Neptunian object. ... (119951) 2002 KX14, also written as 2002 KX14, is a trans-Neptunian object (TNO) residing within the Kuiper belt. ... (84719) 2002 VR128 (also written (84719) 2002 VR128) is a trans-Neptunian object. ... is a trans-Neptunian object discovered by the Near Earth Asteroid Tracking program on November 14, 2003. ... 90482 Orcus (originally known by the provisional designation 2004 DW) is a Kuiper Belt object (KBO) that was discovered by Michael Brown of Caltech, Chad Trujillo of the Gemini Observatory, and David Rabinowitz of Yale University. ... 1993 RO is a trans-Neptunian object of the Plutino class. ... 1993 RP is a trans-Neptunian object of the Plutino class. ... , also written as 2003 AZ84, is a Trans-Neptunian object. ... 2001 QF298, also written as 2001 QF298, is a trans-Neptunian object that resides in the Kuiper belt. ... A cubewano is any substantial Kuiper belt object, orbiting beyond about 41 AU and not controlled by resonances with the outer planets. ... (15760) 1992 QB1 (also written (15760) 1992 QB1) was the first trans-Neptunian object to be discovered after Pluto and Charon. ... (15807) 1994 GV9 is a trans-Neptunian object of the cubewano class. ... (16684) 1994 JQ1, also written as (16684) 1994 JQ1, is a trans-Neptunian object that resides in the Kuiper belt. ... (19255) 1994 VK8, also written as (19255) 1994 VK8, is a trans-Neptunian object (TNO) that resides in the Kuiper belt beyond Pluto. ... (24835) 1995 SM55, also written (24835) 1995 SM55, is a trans-Neptunian object (TNO) that resides in the Kuiper belt. ... (19308) 1996 TO66 (also written (19308) 1996 TO66) is a trans-Neptunian object. ... 58534 Logos, formerly known as (58534) 1997 CQ29, is a Kuiper belt object, more specifically a cubewano. ... (79360) 1997 CS29, also written as 1997 CS29, is a cubewano. ... (33001) 1997 CU29, also written as (33001) 1997 CU29 is a cubewano. ... (24978) 1998 HJ151, also written as (24978) 1998 HJ151, is a cubewano. ... (85627) 1998 HP151, also written as (85627) 1998 HP151 is a cubewano. ... (52747) 1998 HM151, also written as (52747} 1998 HM151, is a cubewano. ... (85633) 1998 KR65, also written as (85633) 1998 KR65, is a cubewano. ... 19521 Chaos (1998 WH24) is a cubewano, a Kuiper belt object not in resonance with any planet. ... (69987) 1998 WA25, also written as (69987) 1998 WA25, is a cubewano. ... (79983) 1999 DF9, also written as (79983) 1999 DF9, is a cubewano. ... (118378) 1999 HT11, also written as (118378) 1999 HT11, is a cubewano. ... 53311 Deucalion (original provisional designation: 1999 HU11) is a trans-Neptunian object. ... 20000 Varuna (VAR oo na) is a large classical Kuiper Belt object (KBO). ... (55565) 2002 AW197 is a trans-Neptunian object. ... 50000 Quaoar (pronounced kwaa·waar or kwow·ər, English IPA: , Tongva ) [2] is a Trans-Neptunian object orbiting the Sun in the Kuiper belt. ... (55636) 2002 TX300 (Also written as (55636) 2002 TX300) is a large Trans-Neptunian object discovered in October 15, 2002 by the NEAT program. ... The correct title of this article is (55637) 2002 UX25. ... (also written (136108) 2003 EL61), nicknamed Santa, is a large Kuiper belt object, roughly one-third the mass of Pluto, discovered by Mike Browns group at Caltech in the United States and J. L. Ortiz et al. ... (120178) 2003 OP32, also written as (120178) 2003 OP32,is a trans-Neptunian object (TNO) that resides in the Kuiper belt. ... (90568) 2004 GV9 (also written (90568) 2004 GV9) is a trans-Neptunian object. ... (also written (136472) 2005 FY9) is a very large Kuiper belt object discovered on March 31, 2005 by the team led by Michael Brown. ... (145452) 2005 RN43, also written as (145452) 2005 RN43, is a large trans-Neptunian object (TNO) orbiting beyond Pluto in the Kuiper belt. ... 1998 WW31 (also written 1998 WW31) is an object of the solar system located beyond the orbit of Neptune. ... 2002 MS4 is an object of the solar system located beyond the orbit of Neptune. ... 2003 MW12, also written 2003 MW12, is a trans-Neptunian object that is in the Kuiper belt. ... 2003 QW90, also written as 2003 QW90, is a trans-Neptunian object (TNO) that resides in the Kuiper belt. ... While a Plutino completes 2 orbits around the Sun in the time it takes Neptune to complete 3 orbits, a Twotino makes 1 orbit around the Sun in the time it takes Neptune to complete 2 orbits. ... 1996 TR66, also written as 1996 TR66, is a Trans-Neptunian object orbiting beyond Pluto in the Kuiper belt. ... (26308) 1998 SM165, also written as (26308) 1998 SM165, is a trans-Neptunian object (TNO) that resides in the Kuiper belt. ... (137295) 1999 RB216, also written as 1999 RB216, is a trans-Neptunian object that resides in the Kuiper belt. ... (130391) 2000 JG81, also written as 2000 JG81, is a trans-Neptunian object that resides in the Kuiper belt. ... 2002 WC19, also written as 2002 WC19, is a Trans-Neptunian object orbiting beyond Pluto. ... 1997 SZ10, also written as 1997 SZ10, is a trans-Neptunian object that resides in the Kuiper belt. ... In astronomy, a resonant Trans-Neptunian Object is a Trans-Neptunian Object (TNO) in mean motion orbital resonance with Neptune. ... (15809) 1998 JS is a trans-Neptunian object that resides in the Kuiper belt beyond Pluto. ... (15836) 1995 DA2, also written as (15836) 1995 DA2, is a trans-Neptunian object. ... (69988) 1998 WA31, also written as (69988) 1998 WA31, is a Trans-Neptunian object that resides in the scattered disc region beyond the Kuiper belt. ... (79969) 1999 CP133, also written as (79969) 1999 CP133, is a trans-Neptunian object. ... (26375) 1999 DE9 (also written (26375) 1999 DE9) is an object of the solar system located beyond the orbit of Neptune. ... (38084) 1999 HB12, also written as (38084) 1999 HB12, is a trans-Neptunian object that resides in the scattered disc region of the Solar System. ... (119068) 2001 KC77, also written as (119068) 2001 KC77, is a trans-Neptunian object (TNO) that resides in the scattered disc region of the Solar System. ... (119070) 2001 KP77 (better known as 2001 KP77) is a 4:7 resonant Trans-Neptunian object (TNO) located in the kuiper belt. ... (84522) 2002TC302 is a large Scattered Disk Object (SDO), orbiting the sun at a distance of 39. ... (136120) 2003 LG7, also written as 2003 LG7, is a trans-Neptunian object that resides in the Kuiper belt. ... The scattered disc (or scattered disk) is a distant region of our solar system, thinly populated by icy planetoids known as scattered disk objects (SDOs), a subset of the broader family of trans-Neptunian objects (TNOs). ... Absolute magnitude: −1. ... (48639) 1995 TL8 (also written (48639) 1995 TL8) is a trans-Neptunian object of the Scattered disk object subclass, and posesses a very large satellite. ... (26181) 1996 GQ21, also written as (26181) 1996 GQ21, is a trans-Neptunian object that resides in the scattered disc region of the Solar System. ... (15874) 1996 TL66 is a trans-Neptunian object that resides in the Kuyper belt. ... (79978) 1999 CC158, also written as (79978) 1999 CC158, is a trans-Neptunian object that resides in the scattered disc region of the Solar System. ... (60608) 2000 EE173, also written as (60608) 2000 EE173, is a Trans-Neptunian object discovered in 2000 by N. Wyn Evans, Jane X. Luu and Chadwick A. Trujillo. ... 2000 OO67 is a Trans Neptunian Object notable for its highly eccentric orbit. ... (118702) 2000 OM67, also written as (118702) 2000 OM67, is a trans-Neptunian object (TNO) that resides in the scattered disc region of the Solar System. ... (42301) 2001 UR163, also written as (42301) 2001 UR163, is a trans-Neptunian object (TNO) that resides in the extended Scattered disc. ... (119878) 2002 CY224, also written as (119878) 2002 CY224, is a trans-Neptunian object (TNO) that resides in the scattered disc region of the Solar System. ... (95625) 2002 GX32, also written as (95625) 2002 GX32, is a trans-Neptunian object that resides in the scattered disc region of the Solar System. ... (65407) 2002 RP120 holds the dubious distinction of being the most eccentric of the numbered asteroids (as of July 2004). ... 90377 Sedna is a trans-Neptunian object, discovered by Michael Brown (Caltech), Chad Trujillo (Gemini Observatory) and David Rabinowitz (Yale University) on November 14, 2003. ... (145451) 2005 RM43, also written as (145451) 2005 RM43, is a trans-Neptunian object that resides in the scattered disc region beyond the Kuiper belt. ... 2000 CR105 is the third most distant known object in the solar system after 2003 UB313 and 90377 Sedna. ... 2004 XR190 (also written 2004 XR190) is a newly discovered trans-Neptunian object located in the scattered disc. ... 2005 TN74 (also written 2005 TN74) is a possible Trojan asteroid of Neptune which was discovered by Scott S. Sheppard and Chadwick A. Trujillo in 2005. ... 2006 QH181, also written as 2006 QH181, is a trans-Neptunian object. ... (15883) 1997 CR29, also written as (15883) 1997 CR29, is a trans-Neptunian object. ... (35671) 1998 SN165, also written as (35671) 1998 SN165, is a trans-Neptunian object. ... (59358) 1999 CL158, also written as (59358) 1999 CL158, is a trans-Neptunian object that resides in the Kuiper belt. ... (118379) 1999 HC12, also written as (118379) 1999 HC12, is a trans-Neptunian object. ... (40314) 1999 KR16, also written as (40314) 1999 KR16, is a trans-Neptunian object. ... (86047) 1999 OY3, also written as (86047) 1999 OY3, is a trans-Neptunian object that resides in the Kuiper belt beyond Pluto. ... (120132) 2003 FY128, also written as (120132) 2003 FY128, is a trans-Neptunian object. ... (120347) 2004 SB60, also written as (120347) 2004 SB60, is a trans-Neptunian object that resides in the Kuiper belt. ... (120348) 2004 TY364, also written as (120348) 2004 TY364, is a trans-Neptunian object that resides in the Kuiper belt. ... (145453) 2005 RR43, also written as (145453) 2005 RR43, is a trans-Neptunian object (TNO). ... A natural satellite is an object that orbits a planet or other body larger than itself and which is not man-made. ... Charon (shair-É™n or kair-É™n (key), IPA , Greek Χάρων), discovered in 1978, is, depending on the definition employed, either the largest moon of Pluto or one member of a double dwarf planet with Pluto being the other member. ... Hydra (formerly known as S/2005 P 1) is a natural satellite of Pluto. ... Nix (formerly known as S/2005 P 2), is a natural satellite of Pluto. ... Dysnomia (officially designated (136199) Eris I Dysnomia) is a moon of the dwarf planet Eris. ... 1998 WW31 (also written 1998 WW31) is an object of the solar system located beyond the orbit of Neptune. ... 2003 EL61 (also written 2003 EL61), is a large and very unusual Kuiper belt object discovered by Mike Brown at Caltech in the United States. ... 2003 EL61 (also written 2003 EL61), is a large and very unusual Kuiper belt object discovered by Mike Brown at Caltech in the United States. ... 58534 Logos, formerly known as (58534) 1997 CQ29, is a Kuiper belt object, more specifically a cubewano. ... (79360) 1997 CS29, also written as (79360) 1997 CS29, is a cubewano. ... Artists impression of Pluto (background) and Charon (foreground). ... This image is an artists rendering of the Oort cloud and the Kuiper Belt. ... A trans-Neptunian object (TNO) is any object in the solar system that orbits the sun at a greater distance on average than Neptune. ... Artists impression of Pluto (background) and Charon (foreground). ... Artists rendering of the Kuiper Belt and hypothetical more distant Oort cloud. ... 90482 Orcus (originally known by the provisional designation 2004 DW) is a Kuiper Belt object (KBO) that was discovered by Michael Brown of Caltech, Chad Trujillo of the Gemini Observatory, and David Rabinowitz of Yale University. ... Adjectives: Plutonian Atmosphere Surface pressure: 0. ... The correct title of this article is (55637) 2002 UX25. ... 20000 Varuna (VAR oo na) is a large classical Kuiper Belt object (KBO). ... (55636) 2002 TX300 (Also written as (55636) 2002 TX300) is a large Trans-Neptunian object discovered in October 15, 2002 by the NEAT program. ... (also written (136108) 2003 EL61), nicknamed Santa, is a large Kuiper belt object, roughly one-third the mass of Pluto, discovered by Mike Browns group at Caltech in the United States and J. L. Ortiz et al. ... 50000 Quaoar (pronounced kwaa·waar or kwow·ər, English IPA: , Tongva ) [2] is a Trans-Neptunian object orbiting the Sun in the Kuiper belt. ... (also written (136472) 2005 FY9) is a very large Kuiper belt object discovered on March 31, 2005 by the team led by Michael Brown. ... (55565) 2002 AW197 is a trans-Neptunian object. ... The scattered disc (or scattered disk) is a distant region of our solar system, thinly populated by icy planetoids known as scattered disk objects (SDOs), a subset of the broader family of trans-Neptunian objects (TNOs). ... (84522) 2002TC302 is a large Scattered Disk Object (SDO), orbiting the sun at a distance of 39. ... Absolute magnitude: −1. ... 2004 XR190 (also written 2004 XR190) is a newly discovered trans-Neptunian object located in the scattered disc. ... 90377 Sedna is a trans-Neptunian object, discovered by Michael Brown (Caltech), Chad Trujillo (Gemini Observatory) and David Rabinowitz (Yale University) on November 14, 2003. ... Triton (trye-tÉ™n, IPA: , Greek Τρίτων), or Neptune I, is the planet Neptunes largest moon. ... See also Lists of astronomical objects Category: ... Major features of the Solar System (not to scale; from left to right): Pluto, Neptune, Uranus, Saturn, Jupiter, the asteroid belt, the Sun, Mercury, Venus, Earth and its Moon, and Mars. ... Below is a list of solar system objects with diameter >500km: The Sun, a spectral class G2 star Mercury Venus Earth Moon Mars Jupiter Io Europa Ganymede Callisto complete list of Jupiters natural satellites Saturn Tethys Dione Rhea Titan Iapetus complete list of Saturns natural satellites Uranus Ariel... This is a list of solar system objects by radius, arranged in descending order of mean volumetric radius. ... This is a list of Solar system objects by mass, in decreasing order. ... Pronunciation of Centaurs, Kuiper Belt Objects, and other planetoids of the outer solar system Pronunciation key ... A Small Solar System Body (SSSB) is a term defined in 2006 by the International Astronomical Union to describe objects in the Solar System that are neither planets nor dwarf planets: [1] This encompasses: all minor planets apart from the dwarf planets, : the classical asteroids, (except for 1 Ceres, the... Vulcanoids are hypothetical asteroids that may orbit in a dynamically stable zone between 0. ... Near-Earth asteroids (NEAs) are asteroids whose orbits are close to Earths orbit. ... For details on the physical properties of bodies in the asteroid belt see Asteroid and Main-belt comet. ... Image of the Trojan asteroids in front of and behind Jupiter along its orbital path. ... The centaurs are a class of icy planetoids that orbit the Sun between Jupiter and Neptune, named after the mythical race of centaurs. ... Damocloids are asteroids such as 5335 Damocles and 1996 PW that have long-period highly eccentric orbits typical of periodic comets such as 1P/Halley, but without showing a cometary coma or tail. ... Comet Hale-Bopp Comet McNaught as seen from Swifts Creek, Victoria, Australia on 23 January 2007 For other uses, see Comet (disambiguation). ... A trans-Neptunian object (TNO) is any object in the solar system that orbits the sun at a greater distance on average than Neptune. ... Artists rendering of the Kuiper Belt and hypothetical more distant Oort cloud. ... The scattered disc (or scattered disk) is a distant region of our solar system, thinly populated by icy planetoids known as scattered disk objects (SDOs), a subset of the broader family of trans-Neptunian objects (TNOs). ... This image is an artists rendering of the Oort cloud and the Kuiper Belt. ...

For other objects and regions, see Asteroid groups and families, Binary asteroids, Asteroid moons, meteoroids and the Solar System.
For a complete listing, see List of asteroids. See also Pronunciation of asteroid names and Meanings of asteroid names. 243 Ida and its moon Dactyl An asteroid moon is an asteroid that orbits another asteroid. ... It has been suggested that micrometeoroid be merged into this article or section. ... Major features of the Solar System (not to scale; from left to right): Pluto, Neptune, Uranus, Saturn, Jupiter, the asteroid belt, the Sun, Mercury, Venus, Earth and its Moon, and Mars. ... This is a list of numbered minor planets, nearly all of the asteroids, in sequential order. ... This page alphabetically lists the first thousand asteroids to be numbered, which are mostly in the main belt. ... This is a list of named asteroids, with links to the Wikipedia articles on the people, places, characters and concepts that they are named after. ...


  Results from FactBites:
 
Wikipedia: Ixion (282 words)
In Greek mythology, Ixion was one of the Lapiths, a king of Thessaly, and a son of Phlegyas.
Ixion was expelled from Olympus, and Zeus struck him with a thunderbolt.
The story of Ixion is told by Diodorrus, Pindar, Virgil in Georgics 4 and Aeneid 6, and by Ovid in Metamorphoses 12.
BIGpedia - 28978 Ixion - Encyclopedia and Dictionary Online (142 words)
28978 Ixion (ik-sye'-un; Latin Ixīōn, Greek Ιξίων) is a Kuiper belt object discovered on May 22 2001 with a diameter of < 822 km and a semimajor axis of about 39.5 AU.
Ixion is a Plutino, meaning it has a 3:2 orbital resonance with Neptune.
The latest spectroscopy results indicate that it has a surface that is a mixture of dark carbon and tholin, which is a heteropolymer formed by irradiation of clathrates of water and organic compounds (such as methane or ethane).
  More results at FactBites »


 

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