NationMaster - Encyclopedia: 253 Mathilde

253 Mathilde is a Main belt asteroid that was visited by the NEAR Shoemaker spacecraft on its way to asteroid 433 Eros. It is a primitive C-type asteroid, the first such asteroid to be visited by a spacecraft. It is also currently the largest asteroid to be visited by a spacecraft. Johann Palisa (December 6, 1848 – May 2, 1925) was an Austrian astronomer, born in Troppau in Austrian Silesia (now in the Czech Republic). ... November 12 is the 316th day of the year (317th in leap years) in the Gregorian Calendar, with 49 days remaining. ... 1885 is a common year starting on Thursday. ... 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 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 diameter of about 4880 km). ... Image of the main asteroid belt between the orbits of Mars and Jupiter. ... In astronomy, an epoch is a moment in time for which celestial coordinates or orbital elements are specified. ... January 30 is the 30th day of the year in the Gregorian Calendar. ... 2005 is a common year starting on Saturday of the Gregorian calendar and is the current year. ... The Julian day or Julian day number (JDN) is the number of SI days that have elapsed since 12 noon Greenwich Mean Time (UT or TT) on Monday, January 1, 4713 BC in the proleptic Julian calendar 1. ... 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. ... Giga (symbol: G) is a prefix in the SI system of units denoting 109, or 1 000 000 000. ... The metre, or meter, is the basic unit of length in the International System of Units (SI: SystÃ¨me International dUnitÃ©s). ... 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. ... A day is any of several different units of time. ... A Julian year is the length of an average year in the Julian calendar, 365. ... 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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. ... A kilometre (American spelling: kilometer, symbol: km) is a unit of length equal to 1000 metres (from the Greek words khilia = thousand and metro = count/measure). ... Mass is a property of physical objects that, roughly speaking, measures the amount of matter they contain. ... The international prototype, made of platinum-iridium, which is kept at the BIPM under conditions specified by the 1st CGPM in 1889. ... Density (symbol: Ï - Greek: rho) is a measure of mass per unit of volume. ... 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. ... It has been suggested that Law of universal gravitation be merged into this article or section. ... 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. ... A day is any of several different units of time. ... The hour was originally defined in Egypt as 1/24 of a day, based on their duo-decimal numbering system (which counted finger joints on each hand). ... A minute is: a unit of time equal to 1/60th of an hour and to 60 seconds. ... An asteroid is a small, solid object in our Solar System, orbiting the Sun. ... C-type asteroids are carbonaceous asteroids. ... In astronomy, absolute magnitude is the apparent magnitude, m, an object would have if it were at a standardized distance away. ... The albedo is a measure of reflectivity of a surface or body. ... Temperature is the physical property of a system which underlies the common notions of hot and cold; the material with the higher temperature is said to be hotter. ... The kelvin (symbol: K) is the SI unit of temperature, and is one of the seven SI base units. ... Image of the main asteroid belt between the orbits of Mars and Jupiter. ... An asteroid is a small, solid object in our Solar System, orbiting the Sun. ... The Near Earth Asteroid Rendezvous - Shoemaker (NEAR Shoemaker), renamed after its launch in honor of planetary scientist Eugene M. Shoemaker, is an unmanned spacecraft designed to study the near-Earth asteroid Eros from close orbit over a period of a year. ... The asteroid 433 Eros (eer-os) was named after the Greek god of love Eros. ... C-type asteroids are carbonaceous asteroids. ...

Mathilde is very dark, blacker than coal, and is thought to share the same composition as carbonaceous chondrite meteorites. The density measured by NEAR Shoemaker, 1,300 kg/m³ was less than half that of a typical carbonaceous chondrite; this may indicate that the asteroid is very loosely packed rubble pile. (Yeomans, et al, 1997) The same is true of another C-type asteroid recently studied through ground-based telescopes, 45 Eugenia. pic for 253 Mathilde File history Legend: (cur) = this is the current file, (del) = delete this old version, (rev) = revert to this old version. ... pic for 253 Mathilde File history Legend: (cur) = this is the current file, (del) = delete this old version, (rev) = revert to this old version. ... Coal is a fossil fuel extracted from the ground either by underground mining, open-pit mining or strip mining. ... Some carbonaceous chondrites. ... Bacubirito in Culiacan, Mexico is the second largest meteorite in the Americas, and fifth largest in the world A meteorite is a small extraterrestrial body that reaches the Earths surface. ... 45 Eugenia is a large Main belt asteroid. ...

The asteroid is marked by a number of extremely large, extremely clear craters; several are wider than the asteroid's average radius. No differences in brightness or colour were visible so the asteroid's interior must be very homogenous. This article is about impact craters, also known as meteor craters. ...

Mathilde's orbit is eccentric, taking it to the outer reaches of the Main belt. It also has one of the slowest rotation periods of the known asteroids. Because of that NEAR Shoemaker was not able to photograph all of the asteroid's surface. In physics, an orbit is the path that an object makes, around another object, whilst under the influence of a source of centripetal force, such as gravity. ... In astrodynamics, under standard assumptions any orbit must be of conic section shape. ...

It was discovered by Johann Palisa on November 12, 1885 in Vienna. Johann Palisa (December 6, 1848 – May 2, 1925) was an Austrian astronomer, born in Troppau in Austrian Silesia (now in the Czech Republic). ... November 12 is the 316th day of the year (317th in leap years) in the Gregorian Calendar, with 49 days remaining. ... 1885 is a common year starting on Thursday. ... Vienna (German: Wien [viËn]; Hungarian: BÃ©cs) is the capital of Austria, and also one of Austrias nine federal states (Bundesland Wien). ...

Mathilde is believed to be named after the wife of astronomer Moritz Loewy. Maurice (Moritz) Loewy (April 15, 1833 – October 15, 1907) was a French astronomer. ...

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Science is the journal of the American Association for the Advancement of Science. ...

252 Clementina is a fairly sizeable, rather poorly known Main belt asteroid. ... 254 Augusta is a typical small Main belt asteroid. ...

Categories: Asteroids visited by spacecraft | Main Belt asteroids Minor planets, or planetoids are minor bodies of the solar system orbiting the sun 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 diameter of about 4880 km). ... Vulcanoids are hypothetical asteroids that may orbit in a dynamically stable zone between 0. ... The asteroid belt is a region of the solar system falling roughly between the planets Mars and Jupiter where the greatest concentration of asteroid orbits can be found. ... Near-Earth objects (NEO) are asteroids, comets and large meteoroids whose orbit intersects Earths orbit and which may therefore pose a collision danger. ... 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. ... A trans-Neptunian object (TNO) is any object in the solar system with all or most of its orbit beyond that of Neptune. ... Damocloids are asteroids such as 5335 Damocles and (16746) 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, showing a white dust tail and blue gas tail (February 1997) A comet is a small body in the solar system that orbits the sun and (at least occasionally) exhibits a coma (or atmosphere) and/or a tail -- both due primarily to the effects of solar radiation... Artists rendering of the Kuiper Belt and more distant Oort cloud. ... This image is an artists rendering of the Oort cloud and the Kuiper Belt. ... An asteroid moon is an asteroid that orbits another asteroid. ... Presentation of the Solar system (not to scale). ... This is a list of numbered asteroids, in sequential order. ... This page alphabetically lists the first thousand asteroids to be numbered, which are mostly in the main belt. ...

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