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COMSTAR 4
COMSTAR 4 was launched on February 21, 1981 aboard a Atlas SLV-3D Centaur from Cape Canaveral & Kennedy. Latest status in GCAT: renamed (July 2001).
COSPAR 1981-018ANORAD 12309United States
Identity
- Name in GCAT
- Comstar 204
- Common name
- COMSTAR 4
- Payload designation
- Comstar D-4
- International designator
- 1981-018A
- NORAD catalog number
- 12309
- GCAT identifier
- S12309
- UN registration
- ST/SG/SER.E/049
Mission
- Mission type
- Communications
- Use
- Commercial
- Program
- Comstar
- Owner
- Comsat
- Country
- United States
- Builder
- Hughes Space and Comms. Co (Hughes Satellite Systems)
- Platform (bus)
- HS-351
Launch
- Date
- February 21, 1981 · 23:23 UTC
- Launch record
- 1981-018Success
- Rocket
- Atlas SLV-3D Centaur
- Spaceport
- Cape Canaveral & Kennedy · pad LC36A
Orbit and fate
- Orbit class (GCAT)
- GEO/S
- Perigee
- 35,772 km
- Apogee
- 35,803 km
- Inclination
- 0.33°
- Status
- Renamed
- Status date
- July 2001
- Last known active
- 2004
- End of operations
- 2010
Size
- Mass
- 748 kg
- Dry mass
- 590 kg
- Total mass with attached objects
- 1,490 kg
- Length
- 3.5 m
- Diameter
- 2.40 m
- Span
- 6.3 m
Source: GCAT payload, deep-space and lander catalogs, Jonathan C. McDowell (CC BY 4.0); Wikidata Q18327619 (CC0).