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Iris (minor planet 7)
One of the brightest asteroids as seen from Earth with a maximum visual magnitude of 8.4, outshone only by Vesta, Ceres, and Pallas. An occupant of the main belt, it was discovered by John Hind in 1847.
| diameter | 208 km |
| spectral class | S |
| semimajor axis | 2.385 AU |
| perihelion | 1.836 AU |
| aphelion | 2.935 AU |
| eccentricity | 0.231 |
| inclination | 5.52° |
| period | 3.68 years |
Related entry
• mythology of Iris (Encyclopedia of History)Related category
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Encyclopedia of History