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Koreasat 1

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)
Dry mass	711 kilograms (1,567 lb)
Start of mission
Launch date	August 5, 1995, 11:10 (1995-08-05UTC11:10) UTC
Rocket	Delta II 7925
Launch site	Cape Canaveral LC-17B
End of mission
Disposal	Decommissioned
Deactivated	December 16, 2005 (2005-12-17)
Orbital parameters
Reference system	Geocentric
Regime	Geostationary
Longitude	116° E
Perigee altitude	35,776 kilometers (22,230 mi)
Apogee altitude	35,796 kilometers (22,243 mi)
Inclination	2.7°
Period	1,436.1 minutes
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,

Koreasat 1 was a South Korean communications satellite launched by a Delta II rocket from Cape Canaveral Air Force Station, Florida, United States. Owned by KT Corporation.

One of the boosters of the Delta II rocket 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.

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.

It was eventually positioned in geosynchronous orbit at 116° E 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.

See also

• Asia Broadcast Satellite

References

1. ^ Gunter, Krebs. "Koreasat 1, 2". Retrieved May 4, 2017.
2. ^ Wade, Mark. "Koreasat". Archived from the original on December 28, 2016. Retrieved May 5, 2017.
3. "Asia Broadcast Satellite Acquires Koreasat-3". Archived from the original on 2017-10-22. Retrieved 2017-10-21.
4. NASA, GSFC. "Koreasat 1". Retrieved May 5, 2017.
5. TBS. "Koreasat 1". Retrieved May 5, 2017.

External links

• "KT Sat". Retrieved January 3, 2023.

v t e South Korean space program
Organizations	Korea AeroSpace Administration (KASA) Korea Aerospace Research Institute (KARI) Korea Astronomy and Space Science Institute (KASI)
Launch sites	Anheung Proving Ground Naro Space Center
Sounding rockets	KARI KSR-I KSR-II KSR-III Nuri TLV ADD Solid-Fuel Space Launch Vehicle TLV
Launch vehicles	KARI Naro-1 (KSLV-I) Nuri (KSLV-II) KSLV-III (In development) ADD Solid-Fuel Space Launch Vehicle
Satellites	Kitsat 1 2 3 KOMPSAT 1 2 3 3A 5 6 7 7A STSat 1 2A 2B 2C 3 KOREASAT 1 2 3 5 5A 6 7 CAS500 1 2 GEO-KOMPSAT 1 2A 2B 3
Space probes	Korea Pathfinder Lunar Orbiter
Contractors	Hanwha Aerospace HD Hyundai Heavy Industries Korea Aerospace Industries Korean Air LIG Nex1 Satrec Initiative
Astronauts	Yi So-yeon Ko San
Related institutions	Agency for Defense Development (ADD) KAIST Satellite Technology Research Center (SaTReC) National Space Committee ROKAF space operations center

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