Flight
- Date and time (UTC)
- March 25, 1998, 17:01
- Launch designation
- 1998-018
- Mission
- Iridium SV051
- Flight name
- Iridium 51/61
- Vehicle flight ID
- Y3
- Year
- Launches in 1998
Orbit and payload
- Initial perigee
- 177 km
- Initial apogee
- 659 km
- Inclination
- 86.4°
- Payload mass to orbit
- 2.0 t
- Payloads
- 2
- GCAT launch code
- OS
Payloads
| Payload | Designation | Owner | Mission type | Mass | Fate |
|---|---|---|---|---|---|
| Iridium 51 | 1998-018ANORAD 25262 | Iridium Inc. | Communications | 667 kg | Reentered (orbital decay) · Mar 14, 2026 |
| Iridium 61 | 1998-018BNORAD 25263 | Iridium Inc. | Communications | 667 kg | Reentered (orbital decay) · Jul 23, 2019 |
Source: GCAT launch list and payload catalogs, Jonathan C. McDowell (CC BY 4.0). Orbit values are the initial orbit reported for the launch.