Flight
- Date and time (UTC)
- April 16, 2025, 19:33
- Launch designation
- 2025-077
- Mission
- NROL-174 Asterion
- Flight name
- NROL-174
- Vehicle flight ID
- 8
- Flight code
- NROL-174
- Year
- Launches in 2025
Orbit and payload
- Payload mass to orbit
- 0.500 t
- Payloads
- 2
- GCAT launch code
- OS
Payloads
| Payload | Designation | Owner | Mission type | Mass | Fate |
|---|---|---|---|---|---|
| USA 521 | 2025-077ANORAD 63596 | National Reconnaissance Office | Signals intelligence | 250 kg | In orbit |
| USA 522 | 2025-077BNORAD 63597 | National Reconnaissance Office | Signals intelligence | 250 kg | In orbit |
Source: GCAT launch list and payload catalogs, Jonathan C. McDowell (CC BY 4.0). Orbit values are the initial orbit reported for the launch.