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| Orbital characteristics 1 | |
|---|---|
| Orbit type | Main belt |
| Semimajor axis | 2.441 AU |
| Perihelion distance | 2.052 AU |
| Aphelion distance | 2.830 AU |
| Orbital period | 3.81 years |
| Inclination | 1.57° |
| Eccentricity | 0.159 |
| Physical characteristics | |
| Diameter 4 | 225 km |
| Rotation period 3 | 7.443 hours |
| Spectral class | GG-type asteroid is a subdivision of C-type asteroids distinguished spectrally by differences in the ultraviolet absorption. The most notable asteroid in this class is 1 Ceres. You can use the "What links here" toolbox link to find asteroids of this type. |
| Abs. magnitudeIn astronomy, absolute magnitude is the apparent magnitude, m an object would have if it were at a standardized distance away. It allows the overall brightnesses of objects to be compared without regards to distance. Absolute Magnitude for stars M In stel 1 | 7.13 |
| AlbedoNote: This article discusses the physical or planetological property of albedo. For other usage, see Albedo (disambiguation). The albedo is a measure of reflectivity of a surface or body. It is the ratio of electromagnetic radiation reflected to the amoun | 0.051 |
| History 2 | |
| Discoverer | J. R. HindJohn Russell Hind ( May 12 1823 December 23 1895) was a British astronomer. He began his career at the Royal Greenwich Observatory under George Biddell Airy. He later succeeded W. Dawes as director of the private observatory of George Bishop. In 1853 he b, 1852Events January 14 President Louis-Napoleon Bonaparte proclaims a new constitution for the French Second Republic. January 17 United Kingdom recognizes independence of the Transvaal Devil's Island penal colony opens February 11 First British public toilet |
19 Fortuna is one of the largest Main belt asteroidsAn asteroid is a small, solid object in our Solar System, orbiting the Sun. An asteroid is an example of a minor planet (or planetoid , which are much smaller than planets. The asteroids are believed to be remnants of the protoplanetary disc which were no. 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.
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 was detected. [1] Stellar occultations by Fortuna have been observed several times.