(2690) Ristiina
|
Asteroid (2690) Ristiina |
|
|---|---|
| Properties of the orbit ( animation ) | |
| Orbit type | Main belt asteroid |
| Asteroid family | Eos family |
| Major semi-axis | 3.0322 AU |
| eccentricity | 0.1186 |
| Perihelion - aphelion | 2.6725 AU - 3.3918 AU |
| Inclination of the orbit plane | 11.4323 ° |
| Sidereal period | 5,280 a |
| Mean orbital velocity | 17.10 km / s |
| Physical Properties | |
| Medium diameter | 20.12 km |
| Albedo | 0.1585 |
| Absolute brightness | 11.1 mag |
| history | |
| Explorer | Yrjö Väisälä |
| Date of discovery | February 24, 1938 |
| Another name | 1938 DG 1 , 1935 QT, 1975 EM |
| 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. | |
(2690) Ristiina [ ˈristiːnɑ ] is an asteroid of the main belt that was discovered on February 24, 1938 by the Finnish astronomer Yrjö Väisälä in Turku .
The name of the asteroid is derived from the Finnish municipality of Ristiina .