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16 Psyche | | 16 Psyche: Encyclopedia - 16 Psyche | | 16 Psyche (sye'-kee) is the 13th-largest Main belt asteroid, measuring 250 kilometers in diameter.
It was discovered by Annibale de Gasparis on March 17, 1852 from Naples and named after the Greek nymph Psyche.
Spectral and other analyses indicate a fairly pure iron-nickel composition. Psyche and other class M asteroids originate from the metallic core of a large differen ...
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| | | 16 Psyche, 16 Psyche - Aspects | | |
| | | 16 Psyche: Encyclopedia - 16 Psyche
16 Psyche
16 Psyche (sye'-kee) is the 13th-largest Main belt asteroid, measuring 250 kilometers in diameter.
It was discovered by Annibale de Gasparis on March 17, 1852 from Naples and named after the Greek nymph Psyche.
Spectral and other analyses indicate a fairly pure iron-nickel composition. Psyche and other class M asteroids originate from the metallic core of a large differentiated planetesimal similar to asteroid 4 Vesta.
Psyche is massive enough that its perturbations on other asteroids can be measured, which enables accurate mass and density values. Its density turns out to be extremely low, indicating extreme porousity or (less likely) a non-metallic composition. In other words, the asteroid is probably a gigantic rubble pile. (1)
Only one stellar occultation event by Psyche has so far been observed (from Mexico on March 22, 2002). Lightcurve variations indicate a non-spherical body.
16 Psyche - Aspects
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Categories: Main Belt asteroids | Asteroids named from Greek mythology
Other related archives1852, 2002, 4 Vesta, Annibale de Gasparis, Asteroids named from Greek mythology, Greek, Main Belt asteroids, Main belt, March 17, March 22, Mexico, Naples, Next minor planet, Previous minor planet, Psyche, Spectral, asteroid, class M, density, differentiated, iron, kilometers, mass, metallic, nickel, nymph, occultation, planetesimal, stellar
 Adapted from the Wikipedia article "16 Psyche", under the G.N U Free Docmentation License. Please also see http://en.wikipedia.org/wiki |
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