Iridium · Communications
IRIDIUM 4
NonoperationalCommunicationsLEO
IRIDIUM 4 is a Iridium Communications communications satellite, part of the Iridium constellation, launched on May 5, 1997 into LEO.
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Launch
- Launch date
- May 5, 1997 at 02:55 PM UTC
- Launch site
- Vandenberg SFB, USA
- Launched by
- Delta II 7920-10C →
- Operator
- United States Air Force
- Mission
- Iridium 04 to 08
- Launch record
- View full launch →
Orbit
- Orbit regime
- LEO
- Apoapsis
- 770 km
- Periapsis
- 766 km
- Inclination
- 86.4°
- Orbital period
- 100.2 min
Spacecraft
- Operator
- Iridium Communications
- Manufacturer
- Thales Alenia Space
- Users
- Commercial
- Launch mass
- 662 kg
- Design lifetime
- 15 years
- Detailed purpose
- Voice & data communications
Identity
- COSPAR (Int'l)
- 1997-020E
- NORAD catalog №
- 24796
- Object type
- Payload
- Owner / operator
United States- Constellation
- Iridium
- Radar cross-section
- 3.661 m²
- Status
- Nonoperational
End of mission
- Fate
- No longer operational — remains in orbit as inactive.
- Final status
- Nonoperational
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