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951 Gaspra

NASA image of Gaspra; the colors are exaggerated
Orbital characteristics
Orbit type	Main belt (Flora)
Semimajor axis	2.20997 AU
Eccentricity	0.17331
Orbital period	3.29 y
Inclination	4.10284°
Physical characteristics
Diameter	19×12×11 km
Mass	1.0×1016 kg
Density	? g/cm³
Rotation period	7 h 5 min 30 s
Spectral class	S
Albedo	0.22
History
Discoverer	G. N. Neujmin, 1916

951 Gaspra is an S-type asteroid that orbits very close to the inner edge of the asteroid belt. Gaspra was the first asteroid ever to be closely approached when it was visited by the Galileo spacecraft, which flew by on its way to Jupiter on October 29, 1991. Gaspra has half a dozen large concavities which resemble craters, though there is some debate whether these are the result of impacts or whether they are instead facets formed when Gaspra broke off of its parent asteroid. In the weak, lopsided gravity of Gaspra, impact craters would naturally take on such flat, lopsided shapes, making this determination difficult. Image File history File links Wiki_letter_w. ... Source : NASA File history Legend: (cur) = this is the current file, (del) = delete this old version, (rev) = revert to this old version. ... Source : NASA File history Legend: (cur) = this is the current file, (del) = delete this old version, (rev) = revert to this old version. ... 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. ... Image of the main asteroid belt between the orbits of Mars and Jupiter. ... The Flora family of asteroids is a large grouping of S-type asteroids in inner main belt, whose origin and propeties are relatively poorly understood at present. ... In geometry, the semi-major axis (also semimajor axis) a applies to ellipses and hyperbolas. ... The astronomical unit (AU or au or a. ... In astrodynamics, under standard assumptions any orbit must be of conic section shape. ... The orbital period is the time it takes a planet (or another object) to make one full orbit. ... Inclination in general is the angle between a reference plane and another plane or axis of direction. ... For the geometric term, see diameter. ... A kilometer (Commonwealth spelling: kilometre), symbol: km is a unit of length in the metric system equal to 1,000 metres (from the Greek words χίλια (khilia) = thousand and μέτρο (metro) = count/measure). ... Mass is a property of a physical object that quantifies the amount of matter it contains. ... 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. ... The gram or gramme, symbol g, is a unit of mass. ... 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. ... 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. ... Albedo is the measure of reflectivity of a surface or body. ... Grigory Nikolaevich Neujmin (January 3, 1886 (Old Style: December 22, 1885) – December 17, 1946) (Russian: Григорий Николаевич Неуймин) was a Russian astronomer. ... 1916 (MCMXVI) is a leap year starting on Saturday (link will take you to calendar) // Events January-February January 1 - The Royal Army Medical Corps first successful blood transfusion using blood that had been stored and cooled. ... Approximately 17% of all known asteroids are of an S-type (for stony) composition. ... Image of the main asteroid belt between the orbits of Mars and Jupiter. ... Galileo is prepared for mating with the IUS booster Galileo being deployed after being launched by the Space Shuttle Atlantis on the STS-34 mission Galileo was an unmanned spacecraft sent by NASA to study the planet Jupiter and its moons. ... Atmospheric characteristics Atmospheric pressure 70 kPa Hydrogen ~86% Helium ~14% Methane 0. ... October 29 is the 302nd day of the year (303rd in leap years) in the Gregorian Calendar, with 63 days remaining. ... 1991 (MCMXCI) was a common year starting on Tuesday of the Gregorian calendar. ... Tycho crater on Earths moon. ... Gravity is a force of attraction that acts between bodies that have mass. ... Tycho crater on Earths moon. ...

Gaspra was discovered by Russian astronomer G. N. Neujmin in 1916. Neujmin named it after Gaspra, a Black Sea retreat that was visited by his contemporaries, such as Gorky and Tolstoy. Grigory Nikolaevich Neujmin (January 3, 1886 (Old Style: December 22, 1885) – December 17, 1946) (Russian: Григорий Николаевич Неуймин) was a Russian astronomer. ... 1916 (MCMXVI) is a leap year starting on Saturday (link will take you to calendar) // Events January-February January 1 - The Royal Army Medical Corps first successful blood transfusion using blood that had been stored and cooled. ... Gaspra (Crimean Tatar: Gaspra, Ukrainian: , Russian: ) is a spa town in Crimea, Ukraine. ... Map of the Black Sea. ... Gorkys autographed portrait Aleksei Maksimovich Peshkov (In Russian Алексей Максимович Пешков) (March 28; March 16 Old Style, 1868–June 14, 1936), better known as Maxim Gorky (Максим Горький), was a Soviet/Russian author, a founder of the socialist realism literary method and a political activist. ... Leo Tolstoy, pictured late in life Count Lev Nikolayevich Tolstoy (help· info) (Russian: Лев Никола́евич Толсто́й; commonly referred to in English as Leo Tolstoy) (September 9, 1828 – November 20, 1910, N.S.; August 28, 1828 – November 7, 1910, O.S.) was a Russian novelist, social reformer, pacifist, Christian anarchist, vegetarian, moral thinker and...

See also

• List of geological features on 951 lalalalala Gaspra

External links

• short intro: 2 photos
• JPL images

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