Orbital elements of HTV-X1
| Launched | 25 October 2025 |
| Flight ended | – |
| Launch site | Tanegashima Space Center, Japan |
| Owner | Japan |
| NORAD ID | 66174 |
| 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 May 27 17:57 | 2026 May 26 05:38:41 | 51.6375 | 0.00072 | 3.4272 | 89.2746 | 270.9069 | 15.65005 | – |
| 2026 May 26 17:57 | 2026 May 26 05:38:41 | 51.6375 | 0.00072 | 3.4272 | 89.2746 | 270.9069 | 15.65005 | – |
| 2026 May 25 17:57 | 2026 May 25 00:31:04 | 51.6363 | 0.00077 | 3.8368 | 97.0203 | 270.9069 | 15.65005 | – |
| 2026 May 24 17:57 | 2026 May 24 01:30:44 | 51.6352 | 0.00075 | 4.1600 | 91.8229 | 270.9069 | 15.65005 | – |
| 2026 May 23 17:58 | 2026 May 22 12:42:09 | 51.6346 | 0.00075 | 4.6772 | 87.0654 | 270.9069 | 15.65005 | – |
| 2026 May 22 17:57 | 2026 May 22 00:25:56 | 51.6358 | 0.00074 | 4.8495 | 85.4022 | 270.9069 | 15.65005 | – |
| 2026 May 21 17:57 | 2026 May 21 01:25:34 | 51.6359 | 0.00075 | 5.1728 | 82.0458 | 270.9069 | 15.65005 | – |
| 2026 May 20 17:57 | 2026 May 20 02:25:09 | 51.6356 | 0.00075 | 5.4961 | 79.0751 | 270.9069 | 15.65005 | – |
| 2026 May 19 17:58 | 2026 May 19 06:28:46 | 51.6356 | 0.00075 | 5.7762 | 76.8380 | 270.9069 | 15.65005 | – |
| 2026 May 18 17:57 | 2026 May 18 02:52:12 | 51.6352 | 0.00076 | 6.1639 | 72.8093 | 270.9069 | 15.65005 | – |
| 2026 May 17 17:57 | 2026 May 17 06:55:45 | 51.6350 | 0.00076 | 6.4440 | 69.7892 | 270.9069 | 15.65005 | – |
| 2026 May 16 17:56 | 2026 May 16 03:19:07 | 51.6343 | 0.00076 | 6.8318 | 65.8114 | 270.9069 | 15.65005 | – |
| 2026 May 15 17:57 | 2026 May 15 04:18:33 | 51.6339 | 0.00076 | 7.1550 | 62.3099 | 270.9069 | 15.65005 | – |
| 2026 May 14 17:58 | 2026 May 14 05:17:59 | 51.6338 | 0.00076 | 7.4782 | 58.8228 | 270.9069 | 15.65005 | – |
| 2026 May 13 17:58 | 2026 May 13 07:49:25 | 51.6336 | 0.00076 | 7.7798 | 55.6818 | 270.9069 | 15.65005 | – |
| 2026 May 12 17:58 | 2026 May 12 05:44:43 | 51.6338 | 0.00075 | 8.1461 | 51.8702 | 270.9069 | 15.65005 | – |
| 2026 May 11 17:56 | 2026 May 11 08:16:08 | 51.6340 | 0.00075 | 8.4477 | 48.6715 | 270.9069 | 15.65005 | – |
| 2026 May 10 17:57 | 2026 May 10 04:39:21 | 51.6341 | 0.00075 | 8.8354 | 44.5712 | 270.9069 | 15.65005 | – |
| 2026 May 09 17:57 | 2026 May 08 06:37:58 | 51.6342 | 0.00075 | 9.4817 | 37.6417 | 270.9069 | 15.65005 | – |
| 2026 May 08 17:57 | 2026 May 08 06:37:58 | 51.6342 | 0.00075 | 9.4817 | 37.6417 | 270.9069 | 15.65005 | – |
| 2026 May 07 17:58 | 2026 May 07 06:05:12 | 51.6337 | 0.00075 | 9.8263 | 33.9042 | 270.9069 | 15.65005 | – |
| 2026 May 06 17:57 | 2026 May 06 08:36:30 | 51.6336 | 0.00075 | 10.1279 | 30.6253 | 270.9069 | 15.65005 | – |
| 2026 May 05 17:57 | 2026 May 05 01:55:28 | 51.6334 | 0.00074 | 10.5587 | 26.0034 | 270.9069 | 15.65005 | – |
| 2026 May 04 17:57 | 2026 May 04 09:02:53 | 51.6338 | 0.00074 | 10.7957 | 23.6261 | 270.9069 | 15.65005 | – |
| 2026 May 03 17:57 | 2026 May 03 10:02:03 | 51.6341 | 0.00074 | 11.1188 | 20.1968 | 270.9069 | 15.65005 | – |
| 2026 May 02 17:57 | 2026 May 02 09:29:09 | 51.6342 | 0.00073 | 11.4634 | 16.4549 | 270.9069 | 15.65005 | – |
| 2026 May 01 17:56 | 2026 May 01 10:28:16 | 51.6345 | 0.00073 | 11.7864 | 12.5717 | 270.9069 | 15.65005 | – |
| 2026 Apr 30 17:56 | 2026 Apr 30 12:59:25 | 51.6348 | 0.00073 | 12.0879 | 9.1352 | 270.9069 | 15.65005 | – |