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FLOCK 1-21
Launch Details
| Launched | 19 November 1998 |
| Flight ended | 24 May 2014 |
| Status | Decayed |
| Launch site | Tyuratam Missile and Space Center, Kazakhstan (Also known as Baikonur Cosmodrome) |
| Owner | United States |
| NORAD ID | 39557 |
| COSPAR ID | 1998-067EA |
| Observing |
Current orbital elements
| Inclination | 51.614° |
| Eccentricity | 0.00087 |
| RA ascending node | 13.336 hr |
| Argument perigee | 297.551° |
| Mean anomaly | 62.720° |
| Orbital period | 87.593 min |
| Epoch of osculation | 25 May 2014, 11:03 |
Derived Quantities