(1928) Summa
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Asteroid (1928) Summa |
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| Properties of the orbit ( animation ) | |
| Orbit type | Main belt asteroid |
| Major semi-axis | 2.4766 AU |
| eccentricity | 0.2020 |
| Perihelion - aphelion | 1.9764 AU - 2.9767 AU |
| Inclination of the orbit plane | 4.569 ° |
| Sidereal period | 3.897 a |
| Mean orbital velocity | 18.93 km / s |
| Physical Properties | |
| Medium diameter | ? km |
| Albedo | ? |
| Rotation period | ? H |
| Absolute brightness | 12.68 mag |
| Spectral class | ? |
| history | |
| Explorer | Yrjö Väisälä |
| Date of discovery | September 21, 1938 |
| Another name | 1938 SO, 1969 PA |
| 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. | |
(1928) Summa is an asteroid of the main belt , which on 21 September 1938 by the Finnish astronomer Yrjö Väisälä at Turku was discovered.
The name of the asteroid is derived from the then Finnish village of Summa on the Karelian Isthmus , a theater of war during the Finnish Winter War .