268 Adorea is a very large Main belt asteroid. It is classified as a primitive carbonaceous F-type/C-type asteroid. Alphonse Louis Nicolas Borrelly (December 8, 1842 – February 28, 1926) was a French astronomer. ... June 8 is the 159th day of the year in the Gregorian Calendar (160th in leap years), with 206 days remaining. ... 1887 is a common year starting on Saturday (click on link for 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). ... Image of the main asteroid belt between the orbits of Mars and Jupiter. ... The Themis Asteroid Family The Themis Asteroid Family is a Hirayama family of asteroids found in the outer portion 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(MMV) is a common year starting on Saturday 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. ... 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, (symbol: m) is the SI base unit of length. ... 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 (symbol: d) is a unit 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. ... Density (symbol: ρ - Greek: rho) is a measure of mass per unit of volume. ... 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. ... 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). ... Asteroids are assigned a type based on spectral shape, color, and sometimes albedo. ... F-type asteroid is a subdivision of C-type asteroids distinguished spectrally by differences in the ultraviolet absorption and the lack of a water absorption feature at 3 micrometres. ... 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. ... 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. ... Carbonate is an anion with a charge of -2 and an empirical formula of CO32-. For an aqueous solution, carbonate exists in three forms. ... F-type asteroid is a subdivision of C-type asteroids distinguished spectrally by differences in the ultraviolet absorption and the lack of a water absorption feature at 3 micrometres. ... C-type asteroids are carbonaceous asteroids. ...

Adorea is one of the Themis family members, meaning that it is a fragment of the original body that shattered in an ancient cataclysm that resulted in the formation of the family. The Themis Asteroid Family The Themis Asteroid Family is a Hirayama family of asteroids found in the outer portion of the main asteroid belt, between the orbits of Mars and Jupiter. ...

It was discovered by A. Borrelly on June 8, 1887 in Marseilles. Alphonse Louis Nicolas Borrelly (December 8, 1842 – February 28, 1926) was a French astronomer. ... June 8 is the 159th day of the year in the Gregorian Calendar (160th in leap years), with 206 days remaining. ... 1887 is a common year starting on Saturday (click on link for calendar). ... Marseilles redirects here. ...

References

• The Asteroid Orbital Elements Database
• Minor Planet Discovery Circumstances
• Asteroid Lightcurve Data File

269 Justitia is a fairly sizeable Main belt asteroid. ...