Orbital elements of ATLAS H R/B
| Launched | 14 May 1987 |
| Flight ended | – |
| Launch site | Air Force Western Test Range, California, USA |
| Owner | United States |
| NORAD ID | 17998 |
| 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 Feb 05 18:58 | 2026 Feb 02 11:01:40 | 63.3160 | 0.07102 | 15.0762 | 115.6171 | 251.9974 | 13.50993 | – |
| 2026 Feb 04 18:57 | 2026 Feb 02 11:01:40 | 63.3160 | 0.07102 | 15.0762 | 115.6171 | 251.9974 | 13.50993 | – |
| 2026 Feb 03 18:56 | 2026 Feb 02 11:01:40 | 63.3160 | 0.07102 | 15.0762 | 115.6171 | 251.9974 | 13.50993 | – |
| 2026 Feb 02 18:56 | 2026 Feb 02 11:01:40 | 63.3160 | 0.07102 | 15.0762 | 115.6171 | 251.9974 | 13.50993 | – |
| 2026 Feb 01 18:56 | 2026 Jan 27 00:28:29 | 63.3158 | 0.07106 | 16.2042 | 115.5272 | 251.9974 | 13.50993 | – |
| 2026 Jan 31 18:56 | 2026 Jan 27 00:28:29 | 63.3158 | 0.07106 | 16.2042 | 115.5272 | 251.9974 | 13.50993 | – |
| 2026 Jan 30 18:57 | 2026 Jan 27 00:28:29 | 63.3158 | 0.07106 | 16.2042 | 115.5272 | 251.9974 | 13.50993 | – |
| 2026 Jan 29 18:56 | 2026 Jan 27 00:28:29 | 63.3158 | 0.07106 | 16.2042 | 115.5272 | 251.9974 | 13.50993 | – |
| 2026 Jan 28 18:56 | 2026 Jan 27 00:28:29 | 63.3158 | 0.07106 | 16.2042 | 115.5272 | 251.9974 | 13.50993 | – |
| 2026 Jan 27 18:56 | 2026 Jan 21 23:40:25 | 63.3166 | 0.07109 | 17.0857 | 115.4538 | 251.9974 | 13.50993 | – |
| 2026 Jan 26 18:57 | 2026 Jan 21 23:40:25 | 63.3166 | 0.07109 | 17.0857 | 115.4538 | 251.9974 | 13.50993 | – |
| 2026 Jan 25 18:57 | 2026 Jan 21 23:40:25 | 63.3166 | 0.07109 | 17.0857 | 115.4538 | 251.9974 | 13.50993 | – |
| 2026 Jan 24 18:58 | 2026 Jan 21 23:40:25 | 63.3166 | 0.07109 | 17.0857 | 115.4538 | 251.9974 | 13.50993 | – |
| 2026 Jan 22 18:56 | 2026 Jan 21 23:40:25 | 63.3166 | 0.07109 | 17.0857 | 115.4538 | 251.9974 | 13.50993 | – |
| 2026 Jan 21 18:56 | 2026 Jan 16 10:26:10 | 63.3175 | 0.07111 | 18.0580 | 115.3775 | 251.9974 | 13.50993 | – |
| 2026 Jan 20 19:06 | 2026 Jan 16 10:26:10 | 63.3175 | 0.07111 | 18.0580 | 115.3775 | 251.9974 | 13.50993 | – |
| 2026 Jan 19 18:57 | 2026 Jan 16 10:26:10 | 63.3175 | 0.07111 | 18.0580 | 115.3775 | 251.9974 | 13.50993 | – |
| 2026 Jan 18 18:57 | 2026 Jan 16 10:26:10 | 63.3175 | 0.07111 | 18.0580 | 115.3775 | 251.9974 | 13.50993 | – |