BSAT-4a

BSAT-4a
Mission type	Communication
Operator	B-SAT
COSPAR ID	2017-059B
SATCAT no.	42951
Website	(Japanese)
Mission duration	15 years (planned)
Spacecraft properties
Spacecraft	BSAT-4a
Spacecraft type	BSAT
Bus	SSL 1300
Manufacturer	Space Systems/Loral
Launch mass	3500 kg
Start of mission
Launch date	29 September 2017, 21:56 UTC
Rocket	Ariane 5 ECA
Launch site	Guiana Space Center ELA-3
Contractor	Arianespace
Orbital parameters
Reference system	Geocentric orbit
Regime	Geostationary orbit
Longitude	110.0° East (Planned)
Transponders
Band	24 Ku-band
Coverage area	Japan
	B-SAT ← BSAT-3c BSAT-4b →

BSAT-4a is a geostationary communications satellite ordered by Broadcasting Satellite System Corporation (BSAT) and designed and manufactured by SSL on the SSL 1300 platform, to be stationed on the 110.0° East orbital slot for direct television broadcasting of 4K and 8K Ultra HD resolutions.^[2]^[3]^[4] It was launched on 29 September 2017.^[5]

Satellite description

BSAT-4a was designed and manufactured by SSL on the SSL 1300 satellite bus for BSAT. It has an estimated launch mass of 3,500 kilograms (7,700 lb) with a 15-year design life.^[2]^[6]^[4]

It has a single K_u-band payload with 24 transponders, and covers Japan with 4K and 8K Ultra HD television satellite service.^[2]^[3]

History

On 18 June 2015, BSAT ordered the first of its fourth generation satellites from SSL, BSAT-4a. It was expected to be weight around 3,500 kilograms (7,700 lb), have 24 K_u-band transponders with a 15-year design life. It was launched on 29 September 2017.^[1] It was planned that 4K and 8K signals would be broadcast by summer 2020.^[3]

In September 2015, BSAT contracted Arianespace for an Ariane 5 ECA launch service,^[4]^[2]and received a preliminary license for broadcasting 4K and 8K Ultra HD.^[7]

References

^ ^a ^b Ariane 5 rocket deploys satellites for Intelsat and B-SAT
^ ^a ^b ^c ^d Krebs, Gunter Dirk (6 September 2016). "BSat 3a, 3b". Gunter's Space Page. Archived from the original on 9 September 2016. Retrieved 9 September 2016.
^ ^a ^b ^c "放送衛星3機のスペック" [Specifications of the three broadcasting satellites] (in Japanese). Broadcasting Satellite System Corporation. Archived from the original on 9 September 2016. Retrieved 9 September 2016.
^ ^a ^b ^c "Arianespace to launch BSAT-4a, marking its 30th commercial GEO satellite launch contract for Japan". 14 September 2015. Archived from the original on 9 September 2016. Retrieved 9 September 2016.
^ Ford, Dominic (1 August 2018). "BSAT-4A". In-The-Sky.org.
^ "SSL selected to provide direct broadcasting satellite to B-SAT". 18 June 2015. Archived from the original on 9 September 2016. Retrieved 9 September 2016.
^ "Milestones". Archived from the original on 9 September 2016. Retrieved 9 September 2016.

Zdroj:https://en.wikipedia.org?pojem=BSAT-4a
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[sfn-1] Ariane 5 rocket deploys satellites for Intelsat and B-SAT

[gsp-bsat4a-2] Krebs, Gunter Dirk (6 September 2016). "BSat 3a, 3b". Gunter's Space Page. Archived from the original on 9 September 2016. Retrieved 9 September 2016.

[bsat-bsat4a-3] "放送衛星3機のスペック" [Specifications of the three broadcasting satellites] (in Japanese). Broadcasting Satellite System Corporation. Archived from the original on 9 September 2016. Retrieved 9 September 2016.

[arianespace-pr20150914-4] "Arianespace to launch BSAT-4a, marking its 30th commercial GEO satellite launch contract for Japan". 14 September 2015. Archived from the original on 9 September 2016. Retrieved 9 September 2016.

[5] Ford, Dominic (1 August 2018). "BSAT-4A". In-The-Sky.org.

[sslmda-pr20150618-6] "SSL selected to provide direct broadcasting satellite to B-SAT". 18 June 2015. Archived from the original on 9 September 2016. Retrieved 9 September 2016.

[bsat-milestones-7] "Milestones". Archived from the original on 9 September 2016. Retrieved 9 September 2016.

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v t e ← 2016 Orbital launches in 2017 2018 →
January	TJS-2 Jilin-1 Video-03 Iridium NEXT × 10 TRICOM-1 USA-273 / SBIRS GEO-3 DSN-2 Hispasat AG1
February	Intelsat 32e / SkyBrasil1 , Telkom-3S Cartosat-2D, Al Farabi-1, BGUSAT, DIDO-2, Flock-3p × 88, Lemur-2 × 8 Dragon CRS-10 Progress MS-05
March	USA-274 / Intruder 8 Tiankun-1 Sentinel-2B EchoStar 23 IGS-Radar 5 USA-275 / WGS-9 SES-10
April	Shijian 13 Cygnus CRS OA-7 , (ALTAIR , CXBN-2 , IceCube , SG-Sat , SHARC) Soyuz MS-04 Tianzhou 1, SilkRoad-1
May	USA-276 / NROL-76 Koreasat 7, SGDC-1 GSAT 9 / South Asia Satellite Inmarsat-5 F4 SES-15 "It's a Test" EKS-2
June	QZS-2 ViaSat-2, Eutelsat 172B Dragon CRS-11 (NICER, BRAC Onnesha, GhanaSat-1, Mazaalai, Nigeria EduSat-1) GSAT-19 EchoStar 21 Progress MS-06 HXMT / Insight, ÑuSat 3 ChinaSat 9A Cartosat-2E, Max Valier Sat, Aalto-1, Blue Diamond, Green Diamond, Red Diamond, CICERO-6, COMPASS-2, InflateSail, Lemur-2 × 8, LituanicaSAT-2, ROBUSTA-1B Kosmos 2519 / Nivelir, Kosmos 2521 / Sputnik Inspektor BulgariaSat-1 Iridium NEXT × 10 EuropaSat / Hellas Sat 3, GSAT-17
July	Shijian-18† Intelsat 35e Kanopus-V-IK, Flying Laptop, Flock-2k × 48, Landmapper BC 1, Landmapper BC 2, Lemur-2 × 8 Soyuz MS-05
August	OPTSAT-3000, VENµS Dragon CRS-12, ASTERIA Blagovest 11L TDRS-M Michibiki 3 Formosat-5 ORS-5 IRNSS-1H
September	USA-277 / OTV-5 Amazonas 5 Soyuz MS-06 Kosmos 2522 / GLONASS-M 752 USA-278 / NROL-42 AsiaSat 9 Yaogan-30-01 × 3 Intelsat 37e, BSAT-4a
October	VRSS-2 Iridium NEXT × 10 QZS-4 SES-11 / EchoStar 105 Sentinel-5 Precursor Progress MS-07 USA-279 / Quasar 21 Koreasat 5A SkySat × 6 , Flock-3m × 4
November	BeiDou-3 M1, BeiDou-3 M2 Mohammed VI-A Cygnus CRS OA-8E (Asgardia-1, EcAMSat, Lemur-2 × 8, TechEdSat-6) Fengyun-3D NOAA-20 Jilin-1 Video × 3 Yaogan-30-02 (3 satellites) Meteor-M No.2-1, Landmapper BC 3, Lemur-2 × 10
December	Kosmos 2524 LKW-1 Alcomsat-1 Galileo FOC 15-18 Dragon CRS-13 Soyuz MS-07 GCOM-C, SLATS Iridium NEXT 31–40 Yaogan-30-03 × 3 AngoSat 1
Launches are separated by dots ( • ), payloads by commas ( , ), multiple names for the same satellite by slashes ( / ). Crewed flights are underlined. Launch failures are marked with the † sign. Payloads deployed from other spacecraft are (enclosed in parentheses).