Orbital elements of H-1 R/B
| Launched | 6 February 1990 |
| Flight ended | – |
| Launch site | Tanegashima Space Center, Japan |
| Owner | Japan |
| NORAD ID | 20491 |
| 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 |
| 2025 Jul 03 17:56 | 2025 Jul 03 12:39:55 | 99.0127 | 0.04669 | 11.6944 | 255.8183 | 99.0645 | 13.03715 | 4.743 |
| 2025 Jul 02 17:56 | 2025 Jun 28 12:56:49 | 99.0132 | 0.04669 | 11.4156 | 267.5630 | 99.0645 | 13.03715 | 4.743 |
| 2025 Jul 01 17:56 | 2025 Jun 28 12:56:49 | 99.0132 | 0.04669 | 11.4156 | 267.5630 | 99.0645 | 13.03715 | 4.743 |
| 2025 Jun 30 17:56 | 2025 Jun 28 12:56:49 | 99.0132 | 0.04669 | 11.4156 | 267.5630 | 99.0645 | 13.03715 | 4.743 |
| 2025 Jun 29 17:56 | 2025 Jun 28 12:56:49 | 99.0132 | 0.04669 | 11.4156 | 267.5630 | 99.0645 | 13.03715 | 4.743 |
| 2025 Jun 28 17:56 | 2025 Jun 28 12:56:49 | 99.0132 | 0.04669 | 11.4156 | 267.5630 | 99.0645 | 13.03715 | 4.743 |
| 2025 Jun 27 17:56 | 2025 Jun 22 09:36:12 | 99.0142 | 0.04669 | 11.0724 | 282.0149 | 99.0645 | 13.03715 | 4.743 |
| 2025 Jun 26 17:56 | 2025 Jun 22 09:36:12 | 99.0142 | 0.04669 | 11.0724 | 282.0149 | 99.0645 | 13.03715 | 4.743 |
| 2025 Jun 25 17:56 | 2025 Jun 22 09:36:12 | 99.0142 | 0.04669 | 11.0724 | 282.0149 | 99.0645 | 13.03715 | 4.743 |
| 2025 Jun 24 17:56 | 2025 Jun 22 09:36:12 | 99.0142 | 0.04669 | 11.0724 | 282.0149 | 99.0645 | 13.03715 | 4.743 |
| 2025 Jun 23 17:56 | 2025 Jun 22 09:36:12 | 99.0142 | 0.04669 | 11.0724 | 282.0149 | 99.0645 | 13.03715 | 4.743 |
| 2025 Jun 22 17:56 | 2025 Jun 17 09:53:18 | 99.0145 | 0.04669 | 10.7935 | 293.7593 | 99.0645 | 13.03715 | 4.743 |
| 2025 Jun 21 17:56 | 2025 Jun 17 09:53:18 | 99.0145 | 0.04669 | 10.7935 | 293.7593 | 99.0645 | 13.03715 | 4.743 |
| 2025 Jun 20 17:57 | 2025 Jun 17 09:53:18 | 99.0145 | 0.04669 | 10.7935 | 293.7593 | 99.0645 | 13.03715 | 4.743 |
| 2025 Jun 19 17:56 | 2025 Jun 17 09:53:18 | 99.0145 | 0.04669 | 10.7935 | 293.7593 | 99.0645 | 13.03715 | 4.743 |
| 2025 Jun 18 17:56 | 2025 Jun 17 09:53:18 | 99.0145 | 0.04669 | 10.7935 | 293.7593 | 99.0645 | 13.03715 | 4.743 |
| 2025 Jun 17 17:56 | 2025 Jun 17 09:53:18 | 99.0145 | 0.04669 | 10.7935 | 293.7593 | 99.0645 | 13.03715 | 4.743 |
| 2025 Jun 16 17:56 | 2025 Jun 12 10:10:27 | 99.0140 | 0.04669 | 10.5146 | 305.5050 | 99.0645 | 13.03715 | 4.743 |
| 2025 Jun 15 17:56 | 2025 Jun 12 10:10:27 | 99.0140 | 0.04669 | 10.5146 | 305.5050 | 99.0645 | 13.03715 | 4.743 |
| 2025 Jun 14 17:56 | 2025 Jun 12 10:10:27 | 99.0140 | 0.04669 | 10.5146 | 305.5050 | 99.0645 | 13.03715 | 4.743 |
| 2025 Jun 13 17:56 | 2025 Jun 12 10:10:27 | 99.0140 | 0.04669 | 10.5146 | 305.5050 | 99.0645 | 13.03715 | 4.743 |
| 2025 Jun 12 17:56 | 2025 Jun 12 10:10:27 | 99.0140 | 0.04669 | 10.5146 | 305.5050 | 99.0645 | 13.03715 | 4.743 |
| 2025 Jun 11 17:56 | 2025 Jun 05 14:15:32 | 99.0125 | 0.04671 | 10.1328 | 321.5826 | 99.0645 | 13.03715 | 4.743 |
| 2025 Jun 10 17:56 | 2025 Jun 05 14:15:32 | 99.0125 | 0.04671 | 10.1328 | 321.5826 | 99.0645 | 13.03715 | 4.743 |
| 2025 Jun 09 17:56 | 2025 Jun 05 14:15:32 | 99.0125 | 0.04671 | 10.1328 | 321.5826 | 99.0645 | 13.03715 | 4.743 |
| 2025 Jun 08 17:56 | 2025 Jun 05 14:15:32 | 99.0125 | 0.04671 | 10.1328 | 321.5826 | 99.0645 | 13.03715 | 4.743 |
| 2025 Jun 07 17:56 | 2025 Jun 05 14:15:32 | 99.0125 | 0.04671 | 10.1328 | 321.5826 | 99.0645 | 13.03715 | 4.743 |
| 2025 Jun 06 17:56 | 2025 Jun 05 14:15:32 | 99.0125 | 0.04671 | 10.1328 | 321.5826 | 99.0645 | 13.03715 | 4.743 |