| 词条 | Koreasat 1 |
| 释义 |
| name = Koreasat 1 → Europe*Star B | image = | image_caption = | insignia = | mission_type = Communications | operator = KT Corporation | website = | COSPAR_ID = 1995-041A | SATCAT = 23639 | mission_duration = 10 years | spacecraft_bus = AS-3000 | manufacturer = Martin Marietta{{\\}}Lockheed Martin | dry_mass = {{convert|711|kg|lb}}[1] | launch_mass = {{convert|1464|kg|lb}}[1] | power = | launch_date = {{start-date|August 5, 1995, 11:10}} UTC[1] | launch_rocket = Delta II 7925 | launch_site = Cape Canaveral LC-17B[4] | launch_contractor = | disposal_type = Decommissioned | deactivated = {{end-date|December 16, 2005}} | last_contact = | decay_date = | orbit_epoch = {{start-date|August 5, 1995}} | orbit_reference = Geocentric | orbit_regime = Geostationary | orbital_position = 116° E | orbit_periapsis = {{convert|35776|km|mi|sp=us}}[4] | orbit_apoapsis = {{convert|35796|km|mi|sp=us}}[4] | orbit_inclination = 2.7°[4] | orbit_semimajor = | orbit_eccentricity = | orbit_period = 1,436.1 minutes[4] | orbit_RAAN = | orbit_arg_periapsis = | orbit_mean_anomaly = | orbit_mean_motion = | apsis = gee | trans_band = 12 FSS Ku band, 3 BSS Ku band | trans_frequency = | trans_bandwidth = 36 MHz, 27 MHz | trans_capacity = | trans_coverage = South Korea, Asia, Europe | trans_TWTA = | trans_EIRP = | trans_HPBW = }}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.[2] 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.[3] The satellite was equipped with a Star 30 solid apogee motor. It carried {{convert|625|kg|lb|abbr=on}} of fuel for the apogee motor and {{convert|187|kg|lb|abbr=on}} of hydrazine propellant.[4] 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.[5] See also
References1. ^1 2 {{cite web |url=http://space.skyrocket.de/doc_sdat/koreasat-1.htm |title=Koreasat 1, 2 |last=Gunter |first=Krebs |accessdate=May 4, 2017}} 2. ^Asia Broadcast Satellite Acquires Koreasat-3 3. ^{{cite web |url=http://nssdc.gsfc.nasa.gov/nmc/spacecraftDisplay.do?id=1995-041A |title=Koreasat 1 |last=NASA |first=GSFC |accessdate=May 5, 2017}} 4. ^{{cite web |url=https://www.tbs-satellite.com/tse/online/sat_koreasat_1.html|title=Koreasat 1 |last=TBS |accessdate=May 5, 2017}} 5. ^1 2 3 4 5 {{cite web |url=http://www.astronautix.com/k/koreasat.html|title=Koreasat |last= Wade|first= Mark|accessdate=May 5, 2017}} External links
5 : Communications satellites|Satellites of South Korea|Spacecraft launched in 1995|1995 in spaceflight|1995 in South Korea |
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