SES-12

SES-12
Name	SES-12
Mission type	Communications
Operator	SES S.A.
Spacecraft bus	SSL 1300
Manufacturer	Space Systems/Loral
Launch date	2018-06-04
Launch vehicle	Falcon 9 Full Thrust
Launch site	Cape Canaveral Air Force Station SLC-40
Orbit	Geostationary
Longitude	95° East

SES-12 SES-12 is a geostationary communications satellite operated by SES S.A., built on the SSL 1300 platform by Space Systems/Loral and launched in 2018 to provide video, data and broadband services across Asia and the Pacific. The satellite supports customers including DirecTV, Dish Network, and regional broadcasters while integrating with ground networks and Teleports across regions served by SES S.A., Intelsat, and Eutelsat.

Satellite overview

SES-12 was developed by Space Systems/Loral as part of a fleet expansion by SES S.A., designed to replace capacity previously carried by satellites such as AMC-18 and to complement GEO assets like Astra 2 and Astra 1. The satellite provides C-band and Ku-band services to markets including India, Indonesia, the Philippines, Malaysia, Thailand, Australia and the Pacific Islands, interacting with regional operators such as Tata Communications, Dish TV, Reliance, and Singtel. SES-12's mission aligns with fleet strategies exemplified by operators including Intelsat, Telesat, EchoStar, and Eutelsat to support video distribution, VSAT networks, mobility services, and broadband backhaul.

Mission history and timeline

SES contracted Space Systems/Loral in 2015 amid procurement trends set by companies like Boeing Satellite Systems and Airbus Defence and Space; the program followed contemporaneous procurements such as Horizons-3e and Amazonas-5. Construction milestones paralleled other SSL 1300 builds like Telstar 12V and SES-14, with environmental testing in California and integration timelines coordinated with launch providers including SpaceX and Arianespace. The launch campaign culminated in 2018 from Cape Canaveral with post-launch orbit-raising maneuvers using liquid apogee engines and station-keeping propulsion similar to missions by Inmarsat and Eutelsat.

Spacecraft design and specifications

The spacecraft uses the SSL 1300 bus featuring a modular structure, solar arrays, and a bipropellant propulsion system derived from designs used on satellites by Hughes and Boeing; the platform supports payload power, thermal control, and redundancy practices seen in platforms like Eurostar and SpaceBus. SES-12 carries multiple C-band transponders, Ku-band spot beams, deployable reflectors and antennas, with power supplied by Gallium Arsenide solar cells and Lithium-ion batteries comparable to those on satellite programs by Thales Alenia Space and Airbus. Mass, dimensions, and on-orbit lifetime specifications follow commercial benchmarks set by operators including DirecTV Group, EchoStar, and Hispasat for geostationary communications assets.

Launch vehicle and launch details

The satellite was launched aboard a SpaceX Falcon 9 Full Thrust booster from Cape Canaveral Air Force Station SLC-40, in a mission sharing operational practices with launches like SES-10, SES-11 (EchoStar 105/SES-11), and Bangabandhu-1. The launch campaign involved coordination with the United States Air Force, NASA range authorities, and commercial stakeholders including Arianespace competitors; the Falcon 9 delivered the satellite to a geosynchronous transfer orbit, following ascent profiles demonstrated on missions like Telstar 19V and Arabsat-6A. Post-launch recovery attempts for the Falcon 9 booster mirrored recovery operations seen by SpaceX on flights for NOAA, Iridium, and Telesat.

Orbit and coverage

Placed into geostationary orbit at 95° East longitude, the satellite provides fixed-point coverage across the Indian Ocean region, serving ground stations and teleports in regions associated with companies such as Tata Communications, Singtel, PT Telkom, and Optus. The orbital slot enables continuous service for broadcasters like Star India, Zee Entertainment, and ABS-CBN while interfacing with regional regulatory frameworks exemplified by the International Telecommunication Union and national agencies in India, Indonesia, and Australia.

Communications payload and services

SES-12's payload supports C-band wide beams for traditional DTH distribution and Ku-band high-throughput spot beams for VSAT and mobility services, enabling applications for broadcasters such as Dish TV, DirecTV, and broadcasters in Southeast Asia. Services include video distribution, maritime connectivity similar to Inmarsat services, enterprise VPN backhaul comparable to offerings from Eutelsat and Intelsat, and humanitarian and governmental connectivity akin to programs run by UN agencies and development banks. The satellite's capacity contributes to broadband initiatives and complements fiber and submarine cable systems operated by companies like Tata Communications and NEC.

Operations and mission status

Operated from SES Network Operations Centers and coordinated with regional teleports and ground segment partners including Hughes Network Systems and Gilat, the satellite entered commercial service after on-orbit testing and acceptance, following standard procedures used by operators such as Intelsat and Eutelsat. SES continues to monitor payload health, station-keeping, and service level agreements with customers including broadcasters, VSAT providers, and telecommunication carriers while integrating capacity planning with fleet assets like SES-14 and SES-15. Ongoing operations follow regulatory filings with the International Telecommunication Union and coordination with operators at adjacent orbital slots.

Category:Communications satellites