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Payload
GP-B
Nonoperational
Payload
LEO
A catalogued spacecraft payload.
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Launch
Launch date
April 20, 2004 at 04:57 PM UTC
Launch site
Vandenberg SFB, USA
Launched by
Delta II 7920-10C →
Operator
United States Air Force
Mission
Gravity Probe B
Launch record
View full launch →
Orbit
Orbit regime
LEO
Apoapsis
620 km
Periapsis
618 km
Inclination
89.85°
Orbital period
97.08 min
Identity
COSPAR (Int'l)
2004-014A
NORAD catalog №
28230
Object type
Payload
Owner / operator
United States
Radar cross-section
10.178 m²
Status
Nonoperational
End of mission
Fate
No longer operational — remains in orbit as inactive.
Final status
Nonoperational