(44) Nysa
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Asteroid (44) Nysa |
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| Properties of the orbit ( animation ) | |
| Orbit type | Inner main belt |
| family | Nysa – Polana complex |
| Major semi-axis | 2,423 AU |
| eccentricity | 0.148 |
| Perihelion - aphelion | 2.065 AU - 2.781 AU |
| Inclination of the orbit plane | 3.7 ° |
| Length of the ascending node | 131.6 ° |
| Argument of the periapsis | 343.4 ° |
| Time of passage of the perihelion | November 27, 2010 |
| Sidereal period | 3 a 282 d |
| Mean orbital velocity | 19.0 km / s |
| Physical Properties | |
| Medium diameter | 70 km |
| Dimensions | ≈ 3.7 · 10 17 kg |
| Albedo | 0.482 |
| Medium density | ≈ 2.0 g / cm³ |
| Rotation period | 6 h 25 min |
| Absolute brightness | 7.03 mag |
| Spectral class | E. |
| history | |
| Explorer | HMS Goldschmidt |
| Date of discovery | May 27, 1857 |
| Another name | 1977 CE |
| Source: Unless otherwise stated, the data comes from JPL Small-Body Database Browser . The affiliation to an asteroid family is automatically determined from the AstDyS-2 database . Please also note the note on asteroid items. | |
(44) Nysa is an asteroid of the main asteroid belt that was discovered by Hermann Mayer Salomon Goldschmidt on May 27, 1857 . It was named after the place Nysa from Greek mythology .
Nysa has a diameter of 71 km and a disk-like shape. The asteroid has a very bright, yellowish surface with an exceptionally high albedo of 0.482. Spectroscopic examinations showed that the surface is composed of the mineral enstatite . It is in the area of the Nysa – Polana complex.
Fragments of Nysa, which were thrown into space in a collision and at some point reached Earth , possibly form the group of meteorites of the Aubrite type (from the class of Achondrites ).
In 6 hours and 25 minutes, Nysa rotates around its own axis; Due to the strange shape, Nysa shows a clear curve of light , as it was only found on a minor planet before the discovery of this asteroid.