Bsat-2 series – Orbital BSAT-2 Series User Manual

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FS008_01_1998

BSAT-2 Series

Mission Partners

Broadcasting Satellite System Corporation (B-SAT)

Tokyo-based company founded by NHK, WOWOW and major
private broadcasters of Japan

Orbital Sciences Corporation

Prime contractor for BSAT-2 system, including in-orbit spacecraft
payload provider and ground control stations

Arianespace

Launch provider

Specifications

Spacecraft

Launch Mass:

1,317 kg (2,904 lb.)

Redundancy:

Full dual string

Solar Arrays:

Silicon panels

Stabilization:

3-axis momentum bias, nadir oriented,
precise pointing

Propulsion:

Solid apogee kick motor, redundant liquid
monopropellant system

Mission Life:

10 years (fueled for over 11.5 years)

Orbit:

110

East Longitude

Payload

Payload:

4-channel digital TV transmission repeater

Power:

4 of 8 130 W Ku-band conduction-cooled
TWTAs amplify the four selected channels

Antenna:

2.2 m (7.2 ft.) offset focus-shaped reflector

Frequency:

Ku-band,

Receive signal: 17.3-17.6 GHz,

Transmit signal: 11.7-12.0 GHz

Launch

Launch Vehicle:

Ariane 5

Site:

Kourou, French Guiana

Date:

BSAT-2a: March 8, 2001

BSAT-2b: July 12, 2001*

BSAT-2c: June 11, 2003

The BSAT-2 satellites were
launched aboard Ariane 5
rockets from their launch site
in South America near the
equator.

BSAT-2 Mission Update

The BSAT-2a spacecraft was launched from Kourou, French Guiana, on
March 8, 2001. Following final test of the communications payload, the
satellite was handed over to the customer on April 25, 2001 as planned.

BSAT-2c was launched from Kourou, French Guiana on June 11,
2003 and was placed in geosynchronous earth orbit at 110 degrees
East Longitude collocated with BSAT-2a. Following the final test of the
communications payload, the satellite was handed over to the customer
and began commercial operations on July 15, 2003. BSAT-2a acted as an
on-orbit backup to BSAT-2c.

In January 2013, BSAT-2a was deactivated and transitioned to a disposal
orbit. The spacecraft exceeded its mission lifetime by nearly two years.

In August 2013, BSAT-2c was deactivated and transitioned to a disposal
orbit.

* BSAT-2b placed into incorrect orbit by launch vehicle