Просмотр кода страницы Английская Википедия:EchoStar III

{{Английская Википедия/Панель перехода}}
{{Short description|Communications satellite}}
{{Use American English|date=November 2017}}
{{Infobox spaceflight
| name                  = EchoStar III
| image                 = 
| image_caption         =

| mission_type          = [[Communications satellite|Communications]]
| operator              = [[EchoStar]]
| website               = 
| COSPAR_ID             = 1997-059A
| SATCAT                = 25004
| mission_duration      = 12&nbsp;years

| spacecraft_bus        = [[A2100|A2100AX]]
| spacecraft_type       = 
| manufacturer          = [[Lockheed Martin]]
| dry_mass              = {{convert|1,700|kg|lb}}
| launch_mass           = {{convert|3,674|kg|lb}}
| BOL_mass              = 
| dimensions            = 
| power                 =

| launch_date           = {{start-date|October 5, 1997, 21:01|timezone=yes}}&nbsp;UTC
| launch_rocket         = [[Atlas (rocket family)|Atlas IIAS]]
| launch_site           = [[Cape Canaveral Air Force Station|Cape Canaveral]] [[Cape Canaveral Air Force Station Launch Complex 36|LC-36B]]
| launch_contractor     = [[NASA]]

| disposal_type         = 
| deactivated           =

| orbit_epoch           = May 14, 2017
| orbit_reference       = [[geocentric orbit|Geocentric]]
| orbit_regime          = [[geostationary orbit|Geostationary]]
| orbit_periapsis       = {{convert|35,787.6|km|mi|sp=us}}
| orbit_apoapsis        = {{convert|35,798.8|km|mi|sp=us}}
| orbit_inclination     = 2.1&nbsp;degrees
| orbit_semimajor       = {{convert|42,164.0|km|mi|sp=us}}
| orbit_period          = 1,436.1&nbsp;minutes
| orbit_longitude       = 61.5°&nbsp;west
| apsis                 = gee

| trans_band            = 32 {{Ku band}}
| trans_frequency       = 
| trans_bandwidth       = 
| trans_capacity        = 
| trans_coverage        = [[Contiguous United States]]
| trans_TWTA            = 
| trans_EIRP            = 
| trans_HPBW            = 
}}

'''EchoStar III''' is a [[communications satellite]] operated by [[EchoStar]]. Launched in 1997 it was operated in [[geostationary orbit]] at a longitude of 61.5 degrees west for 12 years.

== Current status ==
[[EchoStar]] announced August 2, 2017, EchoStar III "experienced an anomaly of unknown origin" during a relocation maneuver in the previous week "that has caused communications with the satellite to be interrupted and intermittent." EchoStar III is now drifting westward at about 0.1 degrees per day, encountering other geostationary satellites. Echostar also said the satellite "is [now] a fully depreciated, non-revenue generating asset."<ref name="spacenews">{{cite web|url=http://spacenews.com/echostar-loses-contact-with-echostar-3-while-changing-orbit/|title=EchoStar loses contact with EchoStar-3 while changing orbit|date=2 August 2017 |publisher=SpaceNews|access-date=September 4, 2017}}</ref>

EchoStar III was finally placed in a graveyard orbit on {{dts|September 6, 2017}}.<ref>{{cite press release|url=http://www.prnewswire.com/news-releases/echostar-iii-satellite-recovered-and-retired-300514733.html|title=EchoStar III Satellite Recovered and Retired}}</ref>

== Satellite ==
The launch of EchoStar I made use of an [[Atlas (rocket family)|Atlas-II AS]] rocket flying from [[Cape Canaveral Air Force Station Launch Complex 36|Launch Complex 36]] at the [[Cape Canaveral Air Force Station]], [[Florida]]. The launch took place at 21:01 UTC on October 5, 1997, with the spacecraft entering a [[geosynchronous transfer orbit]]. EchoStar III carried 16 (or more) [[Ku band]] [[transponder]]s to provide direct voice and video [[communication]]s to small dishes in [[North America]] after parking over 79 W or 135 W longitude.<ref name="gsp">{{cite web|url=http://space.skyrocket.de/doc_sdat/echostar-3.htm|title=EchoStar 3, 4, 7|first=Gunter|last=Krebs|work=Gunter's Space Page|access-date=May 14, 2017}}</ref><ref name="satbeams">{{cite web|url=http://www.satbeams.com/satellites?id=2160|title=EchoStar 3|publisher=SatBeams|access-date=May 14, 2017}}</ref>

== Specifications ==
* Launch mass: {{convert|3,674|kg|lb}}
* [[Electric power|Power]]: 2 deployable [[solar array]]s, [[Battery (electricity)|batteries]]
* Stabilization: 3-axis
* [[Propulsion]]: LEROS-1C
* Longitude: 61.5° west

==See also==
{{Portal|Spaceflight}}
* [[1997 in spaceflight]]

==References==
{{reflist|2}}

{{Orbital launches in 1997}}
{{EchoStar satellites}}

[[Category:Spacecraft launched in 1997]]
[[Category:Communications satellites in geostationary orbit]]
[[Category:Satellites using the A2100 bus]]
[[Category:EchoStar satellites|E03]]
{{Dish Network}}


{{US-spacecraft-stub}}
{{Навигационная таблица/Портал/Английская Википедия}}
[[Категория:Английская Википедия]]
[[Категория:Википедия]]
[[Категория:Статья из Википедии]]
[[Категория:Статья из Английской Википедии]]