Superbird-A

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Superbird-A
NamesSuperbird-1
Mission type Communications
Operator Space Communications Corporation
COSPAR ID 1989-041A [1]
SATCAT no. 20040
Mission duration10 years (planned)
Spacecraft properties
SpacecraftSuperbird-A
Spacecraft type Superbird
Bus SSL 1300
Manufacturer Ford Aerospace
Launch mass2,489 kg (5,487 lb)
DimensionsStowed: 2.41 m × 2.58 m × 2.20 m (7 ft 11 in × 8 ft 6 in × 7 ft 3 in)
Solar panels extended: 20.3 m (67 ft)
Power4 kW
Start of mission
Launch date5 June 1989, 22:37:18 UTC [2]
Rocket Ariane-44L H10
Launch site Centre Spatial Guyanais, ELA-2
Contractor Arianespace
Orbital parameters
Reference system Geocentric orbit [3]
Regime Geostationary orbit
Longitude158° East
Transponders
Band23 Ku-band
3 Ka-band
2 X-band
Coverage areaJapan
 

Superbird-A, also identified as Superbird-1 before launch, was a geostationary communications satellite designed and manufactured by Ford Aerospace) on the SSL 1300 satellite bus. It was originally ordered by Space Communications Corporation (SCC), which later merged into the SKY Perfect JSAT Group. [4] It had a mixed Ku-band, Ka-band and X-band payload and operated on the 158° East longitude. [5] [1]

Contents

It was ordered in 1985 along Superbird-B, Superbird-A1 and Superbird-B1 on the very first order of the SSL 1300 platform. [6] [7] [8] [5] It was also the first satellite of SCC and the second commercial satellite of Japan after JCSAT-1. [5] It was used for video distribution, news gathering, remote publishing and high definition TV service to the main islands of Japan and Okinawa. [1]

Satellite description

The spacecraft was the first satellite designed and manufactured by Ford Aerospace on the SSL 1300 satellite bus. It was based on the design of the Intelsat V series and offered a three-axis stabilized platform. [6] [7] [8] [5]

It had a launch mass of 2,489 kg (5,487 lb) and a 10-year design life. [1] When stowed for launch, its dimensions were 2.41 m × 2.58 m × 2.20 m (7 ft 11 in × 8 ft 6 in × 7 ft 3 in). With its solar panels fully extended it spanned 20.3 m (67 ft). Its power system generated approximately 3,984 watts of power due to two wings with three solar panels each. [5] [1] It also a NiH2 battery to survive the solar eclipses. It would serve as the main satellite on the 158° East longitude position of the Superbird. [5] [1]

Its propulsion system included an R-4D-11 liquid apogee engine (LAE) with a thrust of 490 N (110 lbf). [5] It included enough propellant for orbit circularization and 10 years of operation. [5]

Its payload is composed of 23 Ku-band, 3 Ka-band, plus 2 X-band transponders. [5]

History

Space Communications Corporation (SCC) was founded in 1985, the same year as the original companies that later formed JSAT. [9] In 1986, SCC ordered four spacecraft from Ford Aerospace, Superbird-1, Superbird-2, Superbird-A1 and Superbird-B1. [7]

On 5 June 1989 at 22:37:18 UTC, Superbird-1, the second private communications satellite of Japan, was launched aboard an Ariane 44L along DFS Kopernikus-1. [5] It was injected into a 185 km x 35,981 km geosynchronous transfer orbit (GTO), from which it climbed through three liquid apogee engine (LAE) firings. [1] Once in its 158° East longitude position, it was rechristened as Superbird-A. [5] [7] [9]

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References

  1. 1 2 3 4 5 6 7 "Display: Superbird 1 1989-041A". NASA. 10 February 2021. Retrieved 18 March 2021.PD-icon.svg This article incorporates text from this source, which is in the public domain .
  2. ↑ "Trajectory: Superbird 1 1989-041A". NASA. 10 February 2021. Retrieved 18 March 2021.PD-icon.svg This article incorporates text from this source, which is in the public domain .
  3. ↑ "SUPERBIRD A". N2YO.com. Retrieved 12 August 2016.
  4. ↑ "Superbird-1, -2". SSL (company). Retrieved 18 August 2016.
  5. 1 2 3 4 5 6 7 8 9 10 11 Krebs, Gunter (11 December 2017). "Superbird A, A1, B, B1". Gunter's Space Page. Retrieved 18 March 2021.
  6. 1 2 "Industry Pioneer Marks Milestone, Continues to Lead in Providing High-Power Commercial Satellites, Helping Operators Meet Business Objectives". SSL (company). 17 July 2007. Retrieved 18 August 2016.
  7. 1 2 3 4 "Awards & Launch History - 1300 Bus Satellites". SSL (company). Archived from the original on 12 August 2015. Retrieved 30 July 2016.
  8. 1 2 "Celebrating Fifty Years of Satellite Innovation". SSL (company). Archived from the original on 4 April 2016. Retrieved 18 August 2016.
  9. 1 2 "History". SKY Perfect JSAT. Retrieved 28 July 2016.
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