The correct title of this article is (55636) 2002 TX₃₀₀. It features superscript or subscript characters that are substituted or omitted due to technical limitations.

(55636) 2002 TX₃₀₀ (Also written as (55636) 2002 TX300) is a large Trans-Neptunian object discovered in October 15, 2002 by the NEAT program. NEAT may stand for: Near Earth Asteroid Tracking NeuroEvolution by Augmented Topologies Neue Eisenbahn-Alpentransversale New England Actors Theater Non-Exercise Activity Thermogenesis Neat is also an archaic term for cattle. ... October 15 is the 288th day of the year (289th in leap years). ... For album titles with the same name, see 2002 (album). ... The Julian day or Julian day number (JDN) is the number of days that have elapsed since 12 noon Greenwich Mean Time (UT or TT) on Monday, January 1, 4713 BC in the proleptic Julian calendar . ... 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... Minor planets, or planetoids are minor bodies of the Solar system orbiting the Sun (or of other planetary systems orbiting other stars) that are larger than meteoroids (the largest of which might be taken to be around 10 meters or so across) but smaller than major planets (Mercury having a... 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, an epoch is a moment in time for which celestial coordinates or orbital elements are specified. ... March 6 is the 65th day of the year in the Gregorian Calendar (66th in Leap years). ... 2006 (MMVI) is a common year starting on Sunday of the Gregorian calendar. ... The Julian day or Julian day number (JDN) is the number of days that have elapsed since 12 noon Greenwich Mean Time (UT or TT) on Monday, January 1, 4713 BC in the proleptic Julian calendar . ... In astrodynamics, under standard assumptions any orbit must be of conic section shape. ... In geometry, the semi-major axis (also semimajor axis) a applies to ellipses and hyperbolas. ... The astronomical unit (AU or au or a. ... This article is about several astronomical terms (apogee & perigee, aphelion & perihelion, generic equivalents based on apsis, and related but rarer terms. ... This article is about several astronomical terms (apogee & perigee, aphelion & perihelion, generic equivalents based on apsis, and related but rarer terms. ... The orbital period is the time it takes a planet (or another object) to make one full orbit. ... Water, Rabbit, and Deer: three of the 20 day symbols in the Aztec calendar, from the Aztec Sun Stone. ... 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. ... 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 () is one of the orbital elements used to specify the orbit of an object in space. ... The argument of the perihelion is one of the orbital elements describing the orbit of a planet. ... 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 2π radians at and only at periapsis. ... For the majority of numbered asteroids, almost nothing is known apart from a few physical parameters. ... Mass is a property of a physical object that quantifies the amount of matter and energy it is equivalent to. ... Density (symbol: ρ - Greek: rho) is a measure of mass per unit of volume. ... Gravity is a force of attraction that acts between bodies that have mass. ... In physics, for a given gravitational field and a given position, the escape velocity is the minimum speed an object without propulsion, at that position, needs to have to move away indefinitely from the source of the field, as opposed to falling back or staying in an orbit within a... In astronomy, a rotation period is the time an astronomical object takes to complete one revolution around its rotation axis. ... Asteroids are assigned a type based on spectral shape, color, and sometimes albedo. ... 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!). It allows the overall brightnesses of objects to be compared without regard to distance. ... Albedo is the measure of reflectivity of a surface or body. ... The geometric albedo of an astronomical body is the ratio of its total brightness at zero phase angle to that of an idealised fully reflecting, diffusively scattering (Lambertian) disk with the same cross-section. ... Temperature is also the name of a song by Sean Paul. ... A superscript is a number, figure, or symbol that appears above the normal line of type, at the right or left of another symbol or text. ... A subscript is a number, figure, or indicator that appears below the normal line of type, typically used in a formula, mathematical expression, or description of a chemical compound. ... A trans-Neptunian object (TNO) is any object in the solar system that orbits the sun at a greater distance on average than Neptune. ... October 15 is the 288th day of the year (289th in leap years). ... For album titles with the same name, see 2002 (album). ... NEAT may stand for: Near Earth Asteroid Tracking NeuroEvolution by Augmented Topologies Neue Eisenbahn-Alpentransversale New England Actors Theater Non-Exercise Activity Thermogenesis Neat is also an archaic term for cattle. ...

Classical Kuiper Belt object with the absolute magnitude between that of (50000) Quaoar and (20000) Varuna, 2003 TX ₃₀₀ has the most eccentric and inclined orbit of the three. A cubewano is any substantial Kuiper belt object, orbiting beyond about 41 AU and not controlled by resonances with the outer planets. ... Artists rendering of the Kuiper Belt and hypothetical more distant Oort cloud. ... 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!). It allows the overall brightnesses of objects to be compared without regard to distance. ... This article is about the trans-Neptunian object. ... (Redirected from (20000) Varuna) 20000 Varuna (VAR oo na) is a Kuiper Belt object about 1060 kilometers in diameter, estimated from a combination of thermal and optical measurements. ...

Non-detection of thermal emission puts the upper limit of 907 km on its diameter and lower limit on albedo 0.08 (to compare with Varuna's diameter of 1060 km and albedo of 0.038 respectively). Albedo is the measure of reflectivity of a surface or body. ... (Redirected from (20000) Varuna) 20000 Varuna (VAR oo na) is a Kuiper Belt object about 1060 kilometers in diameter, estimated from a combination of thermal and optical measurements. ...

A variability of the visual brightness was also detected which could fit to 7.9 h or 15.8 h rotational period (the distinction between single or double-peaked curved cold not be made with confidence). The changes in brightness are quite close to the error margin and could also be due to irregular shape.

Infra-red spectrum indicates large quantities of water ice, similar to Quaoar, but visible spectrum is neutral (Quaoar is red). This article is about the trans-Neptunian object. ...

Orbit

Orbits of 2002TX₃₀₀ (blue) and 2003EL₆₁ (green).

Orbits of 2002TX₃₀₀ (blue) and 2003EL₆₁ (green).

2002 TX₃₀₀ is classified as a classical Kuiper belt object and follows an orbit very similar to that of 2003 EL₆₁: highly inclined (26°) and moderately eccentric (e~0.12), far from Neptune’s perturbations (perihelion at ~37AU). Other mid-sizes cubewanos follow similar orbits as well, notably 2002 UX₂₅ and 2002 AW₁₉₇. Image File history File links TheKuiperBelt_Orbits_2002TX300_2003EL61_PolarView. ... Image File history File links TheKuiperBelt_Orbits_2002TX300_2003EL61_PolarView. ... Image File history File links TheKuiperBelt_Orbits_2002TX300_2003EL61. ... Image File history File links TheKuiperBelt_Orbits_2002TX300_2003EL61. ... A cubewano is any substantial Kuiper belt object, orbiting beyond about 41 AU and not controlled by resonances with the outer planets. ... Artists rendering of the Kuiper Belt and hypothetical more distant Oort cloud. ... 2003 EL61 (also written 2003 EL61), nicknamed Santa (non-official designation), is a large and very unusual Kuiper belt object discovered by Mike Brown at Caltech in the United States. ... Inclination is one of the six orbital parameters describing the shape and orientation of a celestial orbit and is the angular distance of the orbital plane from the plane of the reference (usually planets equator or the ecliptic), stated in degrees. ... In astrodynamics orbital perturbation is an effect on an objects orbit due to the range of external influences. ... This article is about several astronomical terms (apogee & perigee, aphelion & perihelion, generic equivalents based on apsis, and related but rarer terms. ... (55637) 2002 UX25 (also written as (55637) 2002 UX25) is a large Trans-Neptunian object discovered on October 30, 2002 by the Spacewatch program. ... (55565) 2002 AW197 (also written: (55565) 2002 AW197) is a trans-Neptunian object. ...

The diagrams show polar and ecliptic views of the orbits of the two cubewanos. The perihelia (q) and the aphelia (Q) are marked with the dates of passage. The present positions (as of April 2006) are marked with the spheres illustrating relative sizes and differences in albedo (both objects appear neutral in the visible spectrum). Very similar orbits for these 'hot' classical objects do not imply similar physical properties; 2002 TX₃₀₀ is smaller and much dimmer (albedo<0.08) than 2003 EL₆₁. This article is about several astronomical terms (apogee & perigee, aphelion & perihelion, generic equivalents based on apsis, and related but rarer terms. ... This article is about several astronomical terms (apogee & perigee, aphelion & perihelion, generic equivalents based on apsis, and related but rarer terms. ... Albedo is the measure of reflectivity of a surface or body. ...

External links

• AstDys orbital elements
• Orbit simulation from JPL (Java).

References

• J. L. Ortiz, A. Sota, R. Moreno, E. Lellouch, N. Biver, A. Doressoundiram, P. Rousselot, P. J. Gutiérrez, I. Márquez, R. M. González Delgado and V. Casanova A study of Trans-Neptunian object (55636) 2002 TX₃₀₀, Astronomy & Astrophysics, 420 (2004), Issue 1, pp. 383-388. Abstract.

• Pinilla-Alonso, N.; Licandro, J.; Campins, H. Mineralogical analysis of two different kind of icy surfaces in the trans-neptunian belt, TNOs (50000) Quaoar and 2002 TX₃₀₀, American Astronomical Society, DPS meeting #36, #11.07 (2004). Abstract.

• J.Licandro, L. di Fabrizio, N. Pinilla-Alonso, J. de León, and E. Oliva Trans-Neptunian object (55636) 2002 TX₃₀₀ ,a fresh icy surface in the outer Solar System. A&A preprint [1]

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