9 Metis (mee'-tis) is one of the largest Main belt asteroids. It is composed of silicates and metallic nickel-iron. Andrew Graham (April 8, 1815 – November 5, 1908) (born in County Fermanagh, Ireland) was an Irish astronomer/computer. ... April 25 is the 115th day of the year in the Gregorian Calendar (116th in leap years). ... 1848 is a leap year starting on Saturday (link will take you to 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 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). ... 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. ... In astronomy, an epoch is a moment in time for which celestial coordinates or orbital elements are specified. ... July 14 is the 195th day (196th in leap years) of the year in the Gregorian Calendar, with 170 days remaining. ... 2004 is a leap year starting on Thursday of the Gregorian calendar. ... 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. ... (This page refers to eccitricity in astrodynamics. ... 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: Système International dUnités). ... 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. ... 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. ... The second (symbol s) is a unit for time, and one of seven SI base units. ... 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. ... A degree (or in full a degree of arc), 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. ... 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: ρ - 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. ... An asteroid is a small, solid object in our Solar System, orbiting the Sun. ... Approximately 17% of all known asteroids are of an S-type (for stony) composition. ... 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. ... 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. ... An asteroid is a small, solid object in our Solar System, orbiting the Sun. ... In chemistry, a silicate is a compound consisting of silicon and oxygen (SixOy), one or more metals, and possibly hydrogen. ... Metal - Wikipedia, the free encyclopedia /**/ @import /skins-1. ... General Name, Symbol, Number nickel, Ni, 28 Chemical series transition metals Group, Period, Block 10, 4, d Appearance lustrous, metallic Atomic mass 58. ... General Name, Symbol, Number iron, Fe, 26 Chemical series transition metals Group, Period, Block 8, 4, d Appearance lustrous metallic with a grayish tinge Atomic mass 55. ...

The first 10 asteroids profiled against Earth's Moon. 9 Metis is second from right.

Metis was discovered by Andrew Graham on April 25, 1848; his only asteroid discovery. It is also the only asteroid to have been discovered as a result of observations from Ireland. Its name comes from the mythological Metis, a Titaness, daughter of Tethys and Oceanus (and thus an Oceanid), who was the first wife of Zeus and the mother of Athena. Zeus devoured her lest she bear a child more powerful than he. Image File history File links The first 10 asteroids profiled against the Earths Moon. ... Image File history File links The first 10 asteroids profiled against the Earths Moon. ... Crust composition Oxygen 43% Silicon 21% Aluminium 10% Calcium 9% Iron 9% Magnesium 5% Titanium 2% Nickel 0. ... Andrew Graham (April 8, 1815 – November 5, 1908) (born in County Fermanagh, Ireland) was an Irish astronomer/computer. ... April 25 is the 115th day of the year in the Gregorian Calendar (116th in leap years). ... 1848 is a leap year starting on Saturday (link will take you to calendar). ... In Greek mythology, Metis (wisdom) was a Titaness who was the first wife of Zeus and the mother of Athena. ... In Greek mythology, the Titans (Greek Τιτάν, plural Τιτᾶνες) are among a series of gods who oppose Zeus and the Olympian gods in their ascent to power. ... In Greek mythology, Tethys was a Titaness and sea goddess who was both sister and wife of Oceanus. ... Oceanus or Okeanos refers to the ocean, which the Greeks and Romans regarded as a river circling the world. ... In Greek and Roman mythology, the Oceanids were the three thousand children of Oceanus and Tethys. ... Statue of Zeus The Greek sculptor Phidias created the 12-m (40-ft) tall Statue of Zeus in about 435 bc. ... Athena from the east pediment of the Afea temple in Aegina After a sculpture of Athena at the Louvre. ...

Light curve data on Metis led to an assumption that it could have a satellite. However, subsequent observations failed to confirm this. [2] [3] Metis was later observed with the Hubble Space Telescope in 1993, which was able to resolve the irregular shape of the asteroid, but no satellites were detected. [4] Moons of solar system scaled to Earths Moon The common noun moon (not capitalized) is used to mean any natural satellite of the other planets. ... The Hubble Space Telescope is a telescope in orbit around the Earth. ... 1993 is a common year starting on Friday of the Gregorian calendar and marked the Beginning of the International Decade to Combat Racism and Racial Discrimination (1993-2003). ...

Metis has been observed occulting a star no less than 5 times. In this July, 1997 still frame captured from video, the bright star Aldebaran has just reappeared on the dark limb of the waning crescent moon in this predawn occultation. ... The Pleiades star cluster A star is any massive gaseous body in outer space. ...

Metis is also the name of a satellite of Jupiter. Atmospheric pressure 0 kPa Metis (IPA: , mee-tis, Greek Μήτις) is the innermost member of the Amalthea group of Jupiters small inner moons. ... A satellite is an object that orbits another object (known as its primary). ... Atmospheric characteristics Atmospheric pressure 70 kPa Hydrogen ~86% Helium ~14% Methane 0. ...

Aspects

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External links

• "Notice of discovery of Metis", MNRAS 8 (1848) 146
• Irish Astronomical History: Markree Castle Observatory and The Discovery of the Asteroid Metis

… | Previous asteroid | 9 Metis | Next asteroid | … 8 Flora (flor-a) is a large, bright Main belt asteroid. ... 10 Hygiea (hye-jee-a or hi-jee-a) is the fourth largest Main belt asteroid with a diameter of 407 km. ...