Orbital elements of SIRIUS W
| Launched | 26 August 1989 |
| Flight ended | – |
| Launch site | Air Force Eastern Test Range, Florida, USA |
| Owner | Sweden |
| NORAD ID | 20193 |
| Alternative names |
MARCOPOLO 1 |
| 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 31 17:58 | 2026 May 31 05:27:38 | 14.8263 | 0.00064 | 0.0331 | 43.3680 | 145.0770 | 0.99186 | – |
| 2026 May 30 17:57 | 2026 May 26 05:52:10 | 14.8255 | 0.00065 | 0.0356 | 42.1412 | 145.0770 | 0.99186 | – |
| 2026 May 29 17:57 | 2026 May 26 05:52:10 | 14.8255 | 0.00065 | 0.0356 | 42.1412 | 145.0770 | 0.99186 | – |
| 2026 May 28 17:56 | 2026 May 26 05:52:10 | 14.8255 | 0.00065 | 0.0356 | 42.1412 | 145.0770 | 0.99186 | – |
| 2026 May 27 17:57 | 2026 May 26 05:52:10 | 14.8255 | 0.00065 | 0.0356 | 42.1412 | 145.0770 | 0.99186 | – |
| 2026 May 26 17:57 | 2026 May 26 05:52:10 | 14.8255 | 0.00065 | 0.0356 | 42.1412 | 145.0770 | 0.99186 | – |
| 2026 May 25 17:57 | 2026 May 21 13:55:34 | 14.8246 | 0.00067 | 0.0379 | 40.6975 | 145.0770 | 0.99186 | – |
| 2026 May 24 17:57 | 2026 May 21 13:55:34 | 14.8246 | 0.00067 | 0.0379 | 40.6975 | 145.0770 | 0.99186 | – |
| 2026 May 23 17:58 | 2026 May 21 13:55:34 | 14.8246 | 0.00067 | 0.0379 | 40.6975 | 145.0770 | 0.99186 | – |
| 2026 May 22 17:57 | 2026 May 21 13:55:34 | 14.8246 | 0.00067 | 0.0379 | 40.6975 | 145.0770 | 0.99186 | – |
| 2026 May 21 17:57 | 2026 May 21 13:55:34 | 14.8246 | 0.00067 | 0.0379 | 40.6975 | 145.0770 | 0.99186 | – |
| 2026 May 20 17:57 | 2026 May 16 14:00:30 | 14.8238 | 0.00068 | 0.0405 | 38.3600 | 145.0770 | 0.99186 | – |
| 2026 May 19 17:58 | 2026 May 16 14:00:30 | 14.8238 | 0.00068 | 0.0405 | 38.3600 | 145.0770 | 0.99186 | – |
| 2026 May 18 17:57 | 2026 May 16 14:00:30 | 14.8238 | 0.00068 | 0.0405 | 38.3600 | 145.0770 | 0.99186 | – |
| 2026 May 17 17:57 | 2026 May 16 14:00:30 | 14.8238 | 0.00068 | 0.0405 | 38.3600 | 145.0770 | 0.99186 | – |
| 2026 May 16 17:56 | 2026 May 16 14:00:30 | 14.8238 | 0.00068 | 0.0405 | 38.3600 | 145.0770 | 0.99186 | – |
| 2026 May 15 17:57 | 2026 May 10 00:42:22 | 14.8227 | 0.00068 | 0.0438 | 35.1908 | 145.0770 | 0.99186 | – |
| 2026 May 14 17:58 | 2026 May 10 00:42:22 | 14.8227 | 0.00068 | 0.0438 | 35.1908 | 145.0770 | 0.99186 | – |
| 2026 May 13 17:58 | 2026 May 10 00:42:22 | 14.8227 | 0.00068 | 0.0438 | 35.1908 | 145.0770 | 0.99186 | – |
| 2026 May 12 17:58 | 2026 May 10 00:42:22 | 14.8227 | 0.00068 | 0.0438 | 35.1908 | 145.0770 | 0.99186 | – |
| 2026 May 11 17:56 | 2026 May 10 00:42:22 | 14.8227 | 0.00068 | 0.0438 | 35.1908 | 145.0770 | 0.99186 | – |
| 2026 May 10 17:57 | 2026 May 10 00:42:22 | 14.8227 | 0.00068 | 0.0438 | 35.1908 | 145.0770 | 0.99186 | – |
| 2026 May 09 17:57 | 2026 May 05 11:16:41 | 14.8218 | 0.00068 | 0.0460 | 33.4685 | 145.0770 | 0.99186 | – |
| 2026 May 08 17:57 | 2026 May 05 11:16:41 | 14.8218 | 0.00068 | 0.0460 | 33.4685 | 145.0770 | 0.99186 | – |
| 2026 May 07 17:58 | 2026 May 05 11:16:41 | 14.8218 | 0.00068 | 0.0460 | 33.4685 | 145.0770 | 0.99186 | – |
| 2026 May 06 17:57 | 2026 May 05 11:16:41 | 14.8218 | 0.00068 | 0.0460 | 33.4685 | 145.0770 | 0.99186 | – |
| 2026 May 05 17:57 | 2026 May 05 11:16:41 | 14.8218 | 0.00068 | 0.0460 | 33.4685 | 145.0770 | 0.99186 | – |
| 2026 May 04 17:57 | 2026 Apr 29 09:56:14 | 14.8206 | 0.00068 | 0.0490 | 32.2919 | 145.0770 | 0.99186 | – |