(1778) Alfvén
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Asteroid (1778) Alfvén |
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|---|---|
| Properties of the orbit ( animation ) | |
| Orbit type | Main belt asteroid |
| Asteroid family | Themis family |
| Major semi-axis | 3.1552 AU |
| eccentricity | 0.1176 |
| Perihelion - aphelion | 2.7840 AU - 3.5264 AU |
| Inclination of the orbit plane | 2.47 ° |
| Sidereal period | 5.60 a |
| Mean orbital velocity | 16.77 km / s |
| Physical Properties | |
| Medium diameter | approx. 21 km |
| Albedo | ? |
| Rotation period | ? |
| Absolute brightness | 11.8 mag |
| Spectral class | ? |
| history | |
| Explorer | CJ and I. van Houten-Groeneveld , |
| Date of discovery | September 26, 1960 |
| Another name | 4506 PL , 1936 HK, 1952 DD 1 , 1959 NN |
| 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. | |
(1778) Alfvén is an asteroid of the main belt that was discovered on September 26, 1960 by the Dutch research team Cornelis Johannes van Houten , Ingrid van Houten-Groeneveld and Tom Gehrels as part of the Palomar-Leiden survey .
The asteroid is named after the Swedish astrophysicist Hannes Alfvén .