Orbital elements of UFO 8
| Launched | 15 March 1998 |
| Flight ended | – |
| Launch site | Air Force Eastern Test Range, Florida, USA |
| Owner | United States |
| NORAD ID | 25258 |
| Alternative names |
USA 138 |
| Date fetched |
Epoch osculation |
Inc. [°] |
Ecc. | RA asc node [hr] |
Arg Peri. [°] |
Mean anom [°] |
Mean motion [rev/day] |
Abs. mag |
| Date fetched |
Epoch osculation |
Inc. [°] |
Ecc. | RA asc node [hr] |
Arg Peri. [°] |
Mean anom [°] |
Mean motion [rev/day] |
Abs. mag |
| 2026 Jan 11 18:57 | 2026 Jan 11 12:55:09 | 10.9400 | 0.00083 | 1.5801 | 263.5425 | 164.9869 | 1.00299 | 6.000 |
| 2026 Jan 10 18:57 | 2026 Jan 06 02:27:43 | 10.9337 | 0.00087 | 1.5822 | 261.4699 | 164.9869 | 1.00299 | 6.000 |
| 2026 Jan 09 18:57 | 2026 Jan 06 02:27:43 | 10.9337 | 0.00087 | 1.5822 | 261.4699 | 164.9869 | 1.00299 | 6.000 |
| 2026 Jan 08 18:56 | 2026 Jan 06 02:27:43 | 10.9337 | 0.00087 | 1.5822 | 261.4699 | 164.9869 | 1.00299 | 6.000 |
| 2026 Jan 07 18:57 | 2026 Jan 06 02:27:43 | 10.9337 | 0.00087 | 1.5822 | 261.4699 | 164.9869 | 1.00299 | 6.000 |
| 2026 Jan 06 18:56 | 2026 Jan 06 02:27:43 | 10.9337 | 0.00087 | 1.5822 | 261.4699 | 164.9869 | 1.00299 | 6.000 |
| 2026 Jan 05 18:57 | 2025 Dec 31 10:08:26 | 10.9261 | 0.00087 | 1.5841 | 258.2670 | 164.9869 | 1.00299 | 6.000 |
| 2026 Jan 04 18:56 | 2025 Dec 31 10:08:26 | 10.9261 | 0.00087 | 1.5841 | 258.2670 | 164.9869 | 1.00299 | 6.000 |
| 2026 Jan 03 18:57 | 2025 Dec 31 10:08:26 | 10.9261 | 0.00087 | 1.5841 | 258.2670 | 164.9869 | 1.00299 | 6.000 |
| 2026 Jan 01 18:56 | 2025 Dec 31 10:08:26 | 10.9261 | 0.00087 | 1.5841 | 258.2670 | 164.9869 | 1.00299 | 6.000 |
| 2025 Dec 31 18:57 | 2025 Dec 31 10:08:26 | 10.9261 | 0.00087 | 1.5841 | 258.2670 | 164.9869 | 1.00299 | 6.000 |
| 2025 Dec 30 18:56 | 2025 Dec 26 09:05:38 | 10.9194 | 0.00083 | 1.5859 | 256.8702 | 164.9869 | 1.00299 | 6.000 |
| 2025 Dec 29 18:56 | 2025 Dec 26 09:05:38 | 10.9194 | 0.00083 | 1.5859 | 256.8702 | 164.9869 | 1.00299 | 6.000 |
| 2025 Dec 28 18:57 | 2025 Dec 26 09:05:38 | 10.9194 | 0.00083 | 1.5859 | 256.8702 | 164.9869 | 1.00299 | 6.000 |
| 2025 Dec 27 18:57 | 2025 Dec 26 09:05:38 | 10.9194 | 0.00083 | 1.5859 | 256.8702 | 164.9869 | 1.00299 | 6.000 |
| 2025 Dec 26 18:56 | 2025 Dec 26 09:05:38 | 10.9194 | 0.00083 | 1.5859 | 256.8702 | 164.9869 | 1.00299 | 6.000 |
| 2025 Dec 25 18:57 | 2025 Dec 20 10:29:46 | 10.9126 | 0.00081 | 1.5884 | 257.3512 | 164.9869 | 1.00299 | 6.000 |
| 2025 Dec 24 18:56 | 2025 Dec 20 10:29:46 | 10.9126 | 0.00081 | 1.5884 | 257.3512 | 164.9869 | 1.00299 | 6.000 |
| 2025 Dec 23 18:56 | 2025 Dec 20 10:29:46 | 10.9126 | 0.00081 | 1.5884 | 257.3512 | 164.9869 | 1.00299 | 6.000 |
| 2025 Dec 22 18:57 | 2025 Dec 20 10:29:46 | 10.9126 | 0.00081 | 1.5884 | 257.3512 | 164.9869 | 1.00299 | 6.000 |
| 2025 Dec 21 18:57 | 2025 Dec 20 10:29:46 | 10.9126 | 0.00081 | 1.5884 | 257.3512 | 164.9869 | 1.00299 | 6.000 |
| 2025 Dec 20 18:57 | 2025 Dec 20 10:29:46 | 10.9126 | 0.00081 | 1.5884 | 257.3512 | 164.9869 | 1.00299 | 6.000 |
| 2025 Dec 19 18:57 | 2025 Dec 11 10:46:21 | 10.9029 | 0.00084 | 1.5921 | 255.6731 | 164.9869 | 1.00299 | 6.000 |
| 2025 Dec 18 18:57 | 2025 Dec 11 10:46:21 | 10.9029 | 0.00084 | 1.5921 | 255.6731 | 164.9869 | 1.00299 | 6.000 |
| 2025 Dec 17 18:58 | 2025 Dec 11 10:46:21 | 10.9029 | 0.00084 | 1.5921 | 255.6731 | 164.9869 | 1.00299 | 6.000 |
| 2025 Dec 16 18:57 | 2025 Dec 11 10:46:21 | 10.9029 | 0.00084 | 1.5921 | 255.6731 | 164.9869 | 1.00299 | 6.000 |