Flight
- Date and time (UTC)
- April 20, 2004, 16:57
- Launch designation
- 2004-014
- Mission
- GP-B
- Vehicle flight ID
- D304
- Year
- Launches in 2004
Orbit and payload
- Initial apogee
- 646 km
- Payload mass to orbit
- 3.1 t
- Payloads
- 1
- GCAT launch code
- OS
Payloads
| Payload | Designation | Owner | Mission type | Mass | Fate |
|---|---|---|---|---|---|
| Gravity Probe B | 2004-014ANORAD 28230 | NASA Marshall Space Flight Center | Space science | 3,145 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.