S4 · · Space Machines Company
| Company | Space Machines Company |
| Category | defense space |
| Type | mission-loss |
| Date | |
| Time of day | not documented |
| Location | no physical site (recall / fleet-wide / aggregate record) |
| Severity | S4 (serious injury, total loss, or grounding) |
| Scale | Optimus-1 orbital servicing satellite |
| Confidence | medium |
| Verification | Yes - adversarially checked against the cited source |
| Source | psnews.com.au |
Space Machines Company's Optimus-1 satellite, launched 5 March 2024 on a SpaceX rideshare to demonstrate orbital servicing capability, never established communications after separation; despite weeks of round-the-clock efforts from ground stations worldwide, the company was unable to contact the spacecraft and it was effectively declared a total loss (space junk).