Etalon
| Use attributes for filter ! | |
| Launch date | 1989 |
|---|---|
| COSPAR ID | 1989-001C |
| Eccentricity | 0. 0021819 |
| Mission type | Geodesy |
| Reference system | Geocentric orbit |
| Regime | Medium Earth orbit |
| Date of Reg. | |
| Date of Upd. | |
| ID | 1987913 |
About Etalon
Etalon-1 and Etalon-2 are two geodetic satellites designed to determine with high accuracy terrestrial reference frame and earth rotation parameters, to improve the gravity field, and to improve the gravitational constant. Each satellite is a high-density passive laser reflector in a very stable medium Earth orbit.
