BSAT-3c

BSAT-3c, also known as JCSAT-110R, is a geostationary communications satellite operated by Broadcasting Satellite System Corporation (B-SAT) and SKY Perfect JSAT (JSAT) which was designed and manufactured by Lockheed Martin on the A2100 platform.[7][8][9]

BSAT-3c / JCSAT-110R
NamesJCSAT-110R
Mission typeCommunication
OperatorB-SAT / SKY Perfect JSAT
COSPAR ID2011-041C [1]
SATCAT no.37776
WebsiteJSAT Official Page
Mission duration15 years (planned)
Spacecraft properties
SpacecraftBSAT-3c
BusA2100[2]
ManufacturerLockheed Martin[3]
Launch mass2906 kg
Dimensions5.3 by 2.0 by 1.9 metres (17.4 ft × 6.6 ft × 6.2 ft)[4]
Power7.5 kW [5]
Start of mission
Launch date6 August 2011, 22:52:00 UTC
RocketAriane 5 ECA
Launch siteCentre Spatial Guyanais, ELA-3
ContractorArianespace
Entered service21 September 2011
Orbital parameters
Reference systemGeocentric orbit
RegimeGeostationary orbit
Longitude110.0° East [6]
Transponders
BandB-SAT: 12 Ku-band
JSAT: 12 × 36 MHz Ku-band
Coverage areaJapan
TWTA powerB-SAT: 120 watts
 

History

On 18 September 2007, SKY Perfect JSAT (JSAT) announced an agreement with B-SAT to jointly procure an hybrid broadcast and communication satellite. Thanks to a decision of the Japanese government that effectively lifted a ban on such mixed satellites, both companies would share a spacecraft to act as backup of JCSAT-110 on the 110.0° East slot. Named BSAT-3c by B-SAT and JCSAT-110R by JSAT, it was to be launched in 2011, and it would be managed by B-SAT.[10] On 19 September 2007, they closed a deal with Arianespace for a launch slot with an Ariane 5 for its launch.[11][12]

On 15 December 2008, JSAT and B-SAT placed a joint order with Lockheed for another A2100-based satellite. Designated JCSAT-110R by JSAT and BSAT-3c by B-SAT, it was to be launched by an Ariane 5 in the second quarter of 2011. The satellite would have two 12 Ku-band payloads, one for each of the owners.[13][7]

Satellite description

The spacecraft was designed and manufactured by Lockheed Martin on the A2100 satellite bus for B-SAT and SKY Perfect JSAT (JSAT). It had a launch mass of 2,906 kilograms (6,407 lb) and a 15-year design life.[4] As most satellites based on the A2100 platform, it uses a 460 newtons (100 lbf) LEROS-1C LAE for orbit raising.[7]

It measures 5.3 by 2.0 by 1.9 metres (17.4 ft × 6.6 ft × 6.2 ft) when stowed for launch. Its dual wing solar panels can generate 7.5 kW of power at the end of its design life, and span 18.9 metres (62 ft) when fully deployed.[4]

It has two payloads, both in the Ku-band with 12 transponders each (a total of 24), each payload is dedicated to each of the owners. The B-SAT payload has 12 transponders with a TWTA output power of 120 watts.[2] The JSAT payload has twelve 36 MHz transponders.[14]

Launch

Intended to launch on 1 August 2011, an anomaly on a valve of the EPC stage of the Ariane 5 ECA rocket, aborted the first launch attempt while the rocket was returned to its integration building for maintenance.[15] On 6 August 2011, at 22:52 UTC, JCSAT-110R/BSAT-3c and its launch companion Astra 1N launched aboard the Ariane 5 ECA from Centre Spatial Guyanais ELA-3 launch pad.[7] At 23:30 UTC, BSAT-3c, which was riding on the lower berth under the SYLDA adapter, separated from the upper stage and successfully finishing the launcher mission. The first signals from the satellite were received at 23:52 UTC, and the process of transferring to its definitive orbital position at 110.0° East and verifying its performance was started.[16] It was introduced into operational service on 21 September 2011.[2]

It was the last of the third generation of B-SAT three-satellite fleet, and the on-orbit spare for the JSAT fleet.[16][2]

References
  1. "BSAT 3C". NASA. 27 April 2016. Retrieved 29 August 2016. This article incorporates text from this source, which is in the public domain.
  2. "放送衛星3機のスペック" [Specifications of the three broadcasting satellites]. Broadcasting Satellite System Corporation. Retrieved 29 August 2016.
  3. "JCSAT-110R". SKY Perfect JSAT. Retrieved 29 August 2016.
  4. "Launch Kit VA203" (PDF). Arianespace. 6 August 2011. Retrieved 29 August 2016.
  5. "Ariane 5 Data relating to flight 205" (PDF). Arianespace. July 2011. Retrieved 24 August 2016.
  6. "Satellite Fleet JSAT". SKY Perfect JSAT. Retrieved 29 August 2016.
  7. Krebs, Gunter Dirk (21 April 2016). "BSat 3c / JCSAT 110R". Gunter's Space Page. Retrieved 29 August 2016.
  8. "BSat 3C". Satbeams. Retrieved 29 August 2016.
  9. "B-SAT and SKY Perfect JSAT Award Lockheed Martin Contract For BSAT-3c/JCSAT-110R". 15 December 2008. Archived from the original on 19 February 2009. Retrieved 29 August 2016.
  10. "JSAT Reaches Basic Agreement on Joint Procurement of 110-degree Hybrid BS/CS Satellite". SKY Perfect JSAT. 18 September 2007. Archived from the original on 17 November 2007. Retrieved 29 August 2016.CS1 maint: bot: original URL status unknown (link)
  11. "Arianespace to Launch Japanese Satellite JCSAT-12". Defense-aerospace.com. Arianespace. 19 September 2007. Retrieved 5 August 2016.
  12. "JSAT Announces Agreement on Launching Replacement of JCSAT-11 Backup Satellite". SKY Perfect JSAT. 19 September 2007. Archived from the original on 17 November 2007. Retrieved 29 August 2016.CS1 maint: bot: original URL status unknown (link)
  13. "B-SAT and SKY Perfect JSAT Award Lockheed Martin Contract For BSAT-3c/JCSAT-110R". Icaa.eu. Lockheed Martin Space Systems. 15 December 2008. Archived from the original on 14 September 2016. Retrieved 5 August 2016.
  14. "Who we are" (PDF). SKY Perfect JSAT. 3 August 2012. Retrieved 2 August 2016.
  15. "Arianespace Launch Postponed At Least 20 Days". Satbeams. 3 July 2011. Retrieved 30 August 2016.
  16. "Notice Regarding Successful Launch of the JCSAT-110R Communications Satellite" (PDF). SKY Perfect JSAT. 7 August 2011. Retrieved 30 August 2016.
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