| Satellite Name | Number | Date Launched | COSPAR | Launch Vehicle | Launch Location | Orbit | AKA |
| X-MIR INSPECTOR | 1997/10/05 | 1997-058D | Soyuz 11A511U | GIK-5 LC1 | Inspector | ||
| XM | 1 | 2001/05/08 | 2001-018A | Zenit-3SL | Odyssey, Pacific | Roll | |
| XM | 2 | 2001/03/18 | 2001-012A | Zenit-3SL | Odyssey, Pacific | GEO | |
| XM | 4 | 2006/10/30 | 2006-049A | Zenit-3SL | SL Odyssey | GEO | XM-Blues |
| XM RADIO (RHYTHM) | 03 | 2005/03/01 | 2005-008A | Zenit-3SL | ODYSSEY | GEO | |
| XMM | 1999/12/10 | 1999-066A | Ariane 5 V119 (504) | CSG ELA3 | |||
| XSS | 10 | 2003/01/29 | 2003-005B | Delat 7925 | CC SLC 17 | LEO | |
| XSS | 11 | 2005/04/11 | 2005-011A | Minotaur | V | LEO | USA 165 |
| XTAR-EUR | 2005/02/12 | 2005-005A | Ariane 5ECA v164 (521) | CSG | XTAR-EUR |
Updated 2007/2/01