19 Fortuna

From Academic Kids

19 Fortuna
Discovery A (http://cfa-www.harvard.edu/iau/lists/NumberedMPs.html)
Discoverer John Russell Hind
Discovery date August 22, 1852
Alternate
designations
A902 UG B (http://cfa-www.harvard.edu/iau/MPDes.html)
Category Main belt
Orbital elements C (http://asteroid.lowell.edu/)
Epoch October 22, 2004 (JD 2453300.5)
Eccentricity (e) 0.159
Semi-major axis (a) 365.235 Gm (2.441 AU)
Perihelion (q) 307.028 Gm (2.052 AU)
Aphelion (Q) 423.443 Gm (2.831 AU)
Orbital period (P) 1393.378 d (3.81 a)
Mean orbital speed 18.94 km/s
Inclination (i) 1.573
Longitude of the
ascending node
(Ω)
211.379
Argument of
perihelion
(ω)
182.091
Mean anomaly (M) 268.398
Physical characteristics
Dimensions 225.0 km 1 (http://web.media.mit.edu/~win/hstpub.pdf)
Mass 1.21019 kg
Density 2.0? g/cm
Surface gravity 0.0629 m/s
Escape velocity 0.1190 km/s
Rotation period 0.3101 d (7.443 h) 2 (http://www.psi.edu/pds/archive/lc.html)
Spectral class G
Absolute magnitude 7.13
Albedo 0.061 3 (http://www.psi.edu/pds/archive/astdata/ALBEDOS/albedos.tab)
Mean surface
temperature
~183 K

19 Fortuna (for-tew'-na) is one of the largest Main belt asteroids. It has a composition similar to 1 Ceres: a darkly colored surface and composition of primitive carbonates.

It was discovered by J. R. Hind on August 22, 1852 and named after Fortuna, the Roman goddess of luck.

The Hubble Space Telescope observed Fortuna in 1993. It was resolved with an apparent diameter of 0.20 arcseconds (4.5 pixels in the Planetary Camera) and its shape was found to be nearly spherical. Satellites were searched for but none were detected [1] (http://web.media.mit.edu/~win/hstpub.pdf).

Stellar occultations by Fortuna have been observed several times.


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The minor planets
Vulcanoids | Main belt | Groups and families | Near-Earth objects | Jupiter Trojans
Centaurs | Trans-Neptunians | Damocloids | Comets | Kuiper belt | Oort cloud
(For other objects and regions, see: Binary asteroids, Asteroid moons and the Solar system)
(For a complete listing, see: List of asteroids. For pronunciation, see: Pronunciation of asteroid names.)
de:Fortuna (Asteroid)

es:(19) Fortuna fr:19 Fortune pl:Fortuna (planetoida)

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