Spacecraft information: ATHENA 2 R/B
| Launched | 23 September 1999 |
| Flight ended | 27 September 1999 |
| Status | Decayed |
| Launch site | Air Force Western Test Range, California, USA |
| Owner | United States |
| NORAD ID | 25920 |
| COSPAR ID | 1999-051B |
| Alternative names |
OAM |
| Observing |