Koreasat 1

Koreasat 1 → Europe*Star B
Mission type Communications
Operator KT Corporation
COSPAR ID 1995-041A
SATCAT no. 23639
Mission duration 10 years
Spacecraft properties
Bus AS-3000
Manufacturer Martin Marietta / Lockheed Martin
Launch mass 1,464 kilograms (3,228 lb)[1]
Dry mass 711 kilograms (1,567 lb)[1]
Start of mission
Launch date August 5, 1995, 11:10 (1995-08-05UTC11:10) UTC[1]
Rocket Delta II 7925
Launch site Cape Canaveral LC-17B[2]
End of mission
Disposal Decommissioned
Deactivated December 16, 2005 (2005-12-17)
Orbital parameters
Reference system Geocentric
Regime Geostationary
Perigee 35,776 kilometers (22,230 mi)[2]
Apogee 35,796 kilometers (22,243 mi)[2]
Inclination 2.7°[2]
Period 1,436.1 minutes[2]
Epoch August 5, 1995 (1995-08-05)
Transponders
Band 12 FSS Ku band, 3 BSS Ku band
Bandwidth 36 MHz, 27 MHz
Coverage area South Korea, Asia, Europe

Koreasat 1 (also known as Mugunghwa 1 and Europe*Star B) was a South Korean communications satellite launched by a Delta II rocket from Cape Canaveral Air Force Station, Florida, USA. Owned by KT Corporation.[3]

One of the boosters of the rocket Delta failed to separate from the first stage of the spacecraft, placing it 5,000 km short of its planned GTO apogee. The satellite had to use up 7.5 years worth of its 12-year lifetime fuel supply to make up the deficiency, shortening Koreasat 1's expected life to about 4.5 years. In order to extend its lifetime, it gave up North-South station-keeping operating in "inclined mode." In the end, the satellite managed to function for 10 years.[4]

The satellite was equipped with a Star 30 solid apogee motor. It carried 625 kg (1,378 lb) of fuel for the apogee motor and 187 kg (412 lb) of hydrazine propellant.[5]

It was eventually positioned in geosynchronous orbit at 116° E from 1995-2000. In 2000, Koreasat 1 was sold to Europe*Star which renamed it Europe*Star B and operated it at 47.5° E where it was focused on Hungary. The satellite went out of service on December 16, 2005 and was moved to the graveyard orbit. As of March 9, 2007, it was located at 152.88° E drifting at 2.155° W per day.[2]

See also

References

  1. 1 2 3 Gunter, Krebs. "Koreasat 1, 2". Retrieved May 4, 2017.
  2. 1 2 3 4 5 6 Wade, Mark. "Koreasat". Retrieved May 5, 2017.
  3. ↑ Asia Broadcast Satellite Acquires Koreasat-3
  4. ↑ NASA, GSFC. "Koreasat 1". Retrieved May 5, 2017.
  5. ↑ TBS. "Koreasat 1". Retrieved May 5, 2017.


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