| 词条 | Yamal-300K |
| 释义 |
| name = Yamal 300K (Ямал-300К) | names_list = | image = | image_caption = | image_alt = | image_size = | mission_type = Communication | operator = Gazprom Space Systems | Harvard_designation = | COSPAR_ID = 2012-061B | SATCAT = 38978 | website = | mission_duration = | spacecraft = Yamal 300K | spacecraft_type = Yamal 300K | spacecraft_bus = Ekspress-1000HTA | manufacturer = ISS Reshetnev (bus) Thales Alenia Space (payload) | launch_mass = {{convert|1870|kg|abbr=on}} | BOL_mass = | landing_mass = | dry_mass = | payload_mass = | dimensions = | power = 7200 | launch_date = {{start date|2012|11|02|21|04|00|7=Z}} | launch_rocket = Proton-M/Briz-M | launch_site = Baikonur Site 81/23 | launch_contractor = | deployment_from = | deployment_date = | entered_service = | disposal_type = | deactivated = | destroyed = | last_contact = | recovery_by = | recovery_date = | decay_date = | orbit_reference = GEO | orbit_regime = | orbit_longitude = 183°E | orbit_slot = | orbit_semimajor = | orbit_eccentricity = | orbit_periapsis = | orbit_apoapsis = | orbit_inclination = | orbit_period = | orbit_RAAN = | orbit_arg_periapsis = | orbit_mean_anomaly = | orbit_mean_motion = | orbit_repeat = | orbit_velocity = | orbit_epoch = | orbit_rev_number = | apsis = | trans_band = | trans_frequency = 11 x 72 MHz C band 18 x 72 MHz Ku band | trans_bandwidth = | trans_capacity = | trans_coverage = | trans_TWTA = | trans_EIRP = | trans_HPBW = | programme = Yamal Constellation | previous_mission = Yamal 202 | next_mission = Yamal 401 | insignia = | insignia_caption = | insignia_alt = | insignia_size = }}Yamal 300K (Russian: {{lang|ru|Ямал-300К}}) is a geostationary communications satellite operated by Gazkom and built by ISS Reshetnev on the Ekspress-1000HTA platform.[1] It was the first switch of satellite supplier in Yamal program after Gazkom had disagreements on the schedule and cost of Yamal 301 and Yamal 302 with RSC Energia.[2][3] It is a {{convert|1870|kg|abbr=on}} satellite with 7.6 kW of power (5.6 kW for the payload) on an unpressurized bus designed for direct GEO injection with 14 years of design life. Its payload was supplied by Thales Alenia Space and is composed of 11 x 72 MHz C band and 18 x 72 MHz Ku band transponders for a 36 MHz equivalent of 52 transponders.[4][5] Its transmitted power is 110 W in C band and 140 in Ku band. HistoryYamal 300K was launched along Luch 5B November 2, 2012 at 21:04 UTC from Baikonur Site 81/23 by a Proton-M/Briz-M directly to GEO.[7] The launch and satellite deployment was successful and Yamal 300K was commissioned into service.[5][9] As of July 22, 2016 it is still in service, but has been moved to 177°E and later to 183°E.[5][4] See also{{Portal |Spaceflight}}
References1. ^1 2 3 {{cite web |last1=Krebs |first1=Gunter Dirk |title=Yamal 300K |url=http://space.skyrocket.de/doc_sdat/yamal-300k.htm |website=Gunter's Space Page |accessdate=2016-07-20 |date=2016-04-17}} [1][2][3][4][5][6][7]2. ^1 {{cite web |last1=Pillet |first1=Nicolas |title=Proton-M 2 novembre 2012 |trans-title=November 2, 2012 Proton-M |url=http://www.kosmonavtika.com/lancements/2012/02112012/02112012.html |website=Kosmonavtika |language=French |accessdate=2016-07-20}} 3. ^1 {{cite web |last1=Pillet |first1=Nicolas |title=Yamal/Historie/La deuxième génération |trans-title=Yamal/History/The second generation |url=http://www.kosmonavtika.com/satellites/yamal/histoire/4.html |website=Kosmonavtika |language=French |accessdate=2016-07-20}} 4. ^1 {{cite web |last1=Pillet |first1=Nicolas |title=Les Yamal-300 |trans-title=The Yamal-300 |url=http://www.kosmonavtika.com/satellites/yamal/histoire/5.html |website=Kosmonavtika |language=French |accessdate=2016-07-20}} 5. ^1 {{cite web |last1=Zak |first1=Anatoly |title=Yamal communication satellites |url=http://www.russianspaceweb.com/yamal.html |website=RussiaSpaceWeb.com |accessdate=2016-07-20 |date=April 21, 2016}} 6. ^1 {{cite web |last1=Zak |first1=Anatoly |title=Yamal 300K |url=http://www.russianspaceweb.com/ekspress1000n.html#yamal300k |website=RussiaSpaceWeb.com |accessdate=2016-07-20 |date=April 21, 2016}} 7. ^1 2 {{cite web|title=Yamal 300k |url=https://www.satbeams.com/satellites?norad=38978 |publisher=Satbeams |accessdate=20 July 2016}} }} External links
4 : Yamal satellites|Spacecraft launched in 2012|Satellites using the Ekspress bus|2012 in Russia |
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