BSAT-2c, was a
geostationary
A geostationary orbit, also referred to as a geosynchronous equatorial orbit''Geostationary orbit'' and ''Geosynchronous (equatorial) orbit'' are used somewhat interchangeably in sources. (GEO), is a circular geosynchronous orbit in altitude ...
communications satellite
A communications satellite is an artificial satellite that relays and amplifies radio telecommunication signals via a transponder; it creates a communication channel between a source transmitter and a receiver at different locations on Earth. C ...
operated by
B-SAT and was designed and manufactured by
Orbital Sciences Corporation
Orbital Sciences Corporation (commonly referred to as Orbital) was an American company specializing in the design, manufacture, and launch of small- and medium- class space and launch vehicle systems for commercial, military and other governmen ...
on the
STAR-1 platform. It was stationed on the 110° East orbital slot along its companion
BSAT-2a
BSAT-2a, was a geostationary communications satellite operated by B-SAT which was designed and manufactured by Orbital Sciences Corporation on the STAR-1 platform. It was stationed on the 110° East orbital slot along its companion BSAT- ...
from where they provided redundant
high definition direct television broadcasting across Japan.
The original companion for BSAT-2a was
BSAT-2b
BSAT-2b, was a geostationary communications satellite ordered by B-SAT which was designed and manufactured by Orbital Sciences Corporation on the STAR-1 platform. It was designed to be stationed on the 110° East orbital slot along its ...
, but a launch failure during its launch during July 2001, meant that it was not possible to commission it into service. Thus, during October of the same year BSAT-2c was ordered and launched in June 2003. It was retired in August 2013.
Satellite description
BSAT-2c was designed and manufactured by
Orbital Sciences Corporation
Orbital Sciences Corporation (commonly referred to as Orbital) was an American company specializing in the design, manufacture, and launch of small- and medium- class space and launch vehicle systems for commercial, military and other governmen ...
on the
STAR-1 satellite bus
A satellite bus (or spacecraft bus) is the main body and structural component of a satellite or spacecraft, in which the payload and all scientific instruments are held.
Bus-derived satellites are opposed to specially produced satellites. Bus-d ...
for
B-SAT. It had a launch mass of , a dry mass of , and a 10-year design life.
[ As all four STAR-1 satellites, it had a solid rocket Star 30CBP ]apogee kick motor
An apogee kick motor (AKM) is a rocket motor
A rocket engine uses stored rocket propellants as the reaction mass for forming a high-speed propulsive jet of fluid, usually high-temperature gas. Rocket engines are reaction engines, produ ...
for orbit raising
In celestial mechanics, an orbit is the curved trajectory of an physical body, object such as the trajectory of a planet around a star, or of a natural satellite around a planet, or of an satellite, artificial satellite around an object or pos ...
, plus of propellant for its liquid propellant station keeping thrusters.
It measured when stowed for launch. Its dual wing solar panels could generate 2.6 kW of power at the beginning of its design life, and it span was when fully deployed.
It had a single Ku band payload with four active transponders
In telecommunications, a transponder is a device that, upon receiving a signal, emits a different signal in response. The term is a blend of ''transmitter'' and ''responder''.
In air navigation or radio frequency identification, a flight trans ...
plus four spares with a TWTA
A traveling-wave tube (TWT, pronounced "twit") or traveling-wave tube amplifier (TWTA, pronounced "tweeta") is a specialized vacuum tube that is used in electronics to amplify radio frequency (RF) signals in the microwave range. The TWT belongs t ...
output power of 130 Watt
The watt (symbol: W) is the unit of power or radiant flux in the International System of Units (SI), equal to 1 joule per second or 1 kg⋅m2⋅s−3. It is used to quantify the rate of energy transfer. The watt is named after James Wa ...
s.
History
In March 1999, B-SAT ordered from Orbital Sciences Corporation
Orbital Sciences Corporation (commonly referred to as Orbital) was an American company specializing in the design, manufacture, and launch of small- and medium- class space and launch vehicle systems for commercial, military and other governmen ...
two satellites based on the STAR-1 platform: BSAT-2a
BSAT-2a, was a geostationary communications satellite operated by B-SAT which was designed and manufactured by Orbital Sciences Corporation on the STAR-1 platform. It was stationed on the 110° East orbital slot along its companion BSAT- ...
and BSAT-2b
BSAT-2b, was a geostationary communications satellite ordered by B-SAT which was designed and manufactured by Orbital Sciences Corporation on the STAR-1 platform. It was designed to be stationed on the 110° East orbital slot along its ...
. This was the second order of the bus and the first since Orbital had acquired CTA Space Systems, the original developer. During 2001, BSAT-2a was successfully launched, but BSAT-2b was orbited into an incorrect orbit and was considered lost. In October of the same year, B-SAT contracted Orbital for a near copy replacement of the lost spacecraft, called BSAT-2c.
BSAT-2c was launched aboard an Ariane 5G
Ariane 5 is a European heavy-lift space launch vehicle developed and operated by Arianespace for the European Space Agency (ESA). It is launched from the Centre Spatial Guyanais (CSG) in French Guiana. It has been used to deliver payloads into ...
at 22:38 UTC, June 11, 2003, from Guiana Space Center
The Guiana Space Centre (french: links=no, Centre spatial guyanais; CSG), also called Europe's Spaceport, is a European spaceport to the northwest of Kourou in French Guiana, a region of France in South America. Kourou is located approximatel ...
ELA-3
ELA-3 (french: Ensemble de Lancement Ariane 3, lit=Ariane Launch Complex 3), is a launch pad and associated facilities at the Centre Spatial Guyanais in French Guiana. ELA-3 is operated by Arianespace as part of the expendable launch system f ...
. It rode on the lower berth below Optus C1
This is a list of the satellites operated by Optus, an Australian telecommunications company. The satellite communications facility is located at Belrose on Sydney's Northern Beaches. Optus' satellites are divided into 4 classes A, B, C and D. As ...
. On July 15, BSAT-2c was commissioned into service starting the broadcast of digital signals.
B-SAT ended the broadcast of analog television in July 2011. During August 2013, BSAT-2c was sent to a graveyard orbit and decommissioned.
References
{{Orbital launches in 2003
Communications satellites in geostationary orbit
Satellites using the GEOStar bus
Spacecraft launched in 2003
Communications satellites of Japan
Satellites of Japan