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Apstar 2R


Also called Telstar 10 or Apstar 4

General


Designation 25010 / 97062A
Launch date 16 Oct 1997
Country of origin China
Mission Telecommunications
Geostationary orbit see below
Launch vehicle Long March 3B #46

Was insured for $220 million

In Aug 1999 Loral Space & Communications Ltd leased (via Loral Asia Pacific Satellite Ltd.) the satellite (27 C-band and 13 Ku-band transponders) through its remaining lifetime. It will replace Orion 3. Contract worth $298.1 million (Loral will pay US$78.4 million on the closing date, US$12.5 million per quarter thereafter for 16 quarters and US$19.6 million on the date the sixteenth quarterly instalment is made.). Under the agreement, Loral will also have the option to lease from APT replacement satellites after the Apstar IIR's useful life has ended.

In June 2009, Telesat agreed to sell its leasehold interest to APT for $69.5 million.

Location


Begin End Position
L: 16 Oct 1997 Jun 2012 76.5°E
Jun 2012 Oct 2012 76.5°E, inclined


End of life


Out of service Nov 2012
Cause Sent to the junk orbit


sat-index articles


Technical data


Lyngsat transponder loading



EIRP coverage (dBW)


C-band
Ku-band

Specifications


Prime contractor Space Systems/Loral
Platform FS-1300
Mass at launch 3700 kg
Dry mass 1415 kg
Dimension 3.10 x 8.60 x 5.50 m
Solar array  
Stabilization 3-axis
DC power  
Design lifetime 15 years


C-band


Main transponders 28
Backup transponders 8
Power 60 W (TWTA)
Bandwidth 1 transponder of 30 MHz
27 transponders of 36 MHz
Coverage Asia, Australia and part of Africa
EIRP max 39 dBW
G/T max -0.4 dB/K
Polarization linear H/V
Frequencies Uplink: 5.850 - 6.425 GHz
Downlink: 3.625 - 4.200 GHz

Telemetry: 3.627 V & 4.199625 H GHz
Command: 5.8505 H & 6.4245 V GHz

Transponder frequency chart (GHz)


Horizontal
Uplink
Horizontal
Downlink
Transponder Vertical
Downlink
Vertical
Uplink
Bandwidth
  3.643 1A   5.868 30
5.885   1B 3.660   36
  3.680 2A   5.905 36
5.925   2B 3.700   36
  3.720 3A   5.945 36
5.985   3B 3.740   36
  3.760 4A   5.985 36
6.005   4B 3.780   36
  3.800 5A   6.025 36
6.045   5B 3.820   36
  3.840 6A   6.065 36
6.085   6B 3.860   36
  3.880 7A   6.105 36
6.125   7B 3.900   36
  3.920 8A   6.145 36
6.125   8B 3.940   36
  3.960 9A   6.185 36
6.205   9B 3.980   36
  4.000 10A   6.225 36
6.245   10B 4.020   36
  4.040 11A   6.265 36
6.285   11B 4.060   36
  4.080 12A   6.305 36
6.325   12B 4.100   36
  4.120 13A   6.345 36
6.365   13B 4.140   36
  4.160 14A   6.385 36
6.405   14B 4.180   36


Ku-band


Main transponders 16
Backup transponders 8
Power 110 W (TWTA)
Bandwidth 15 transponders of 54 MHz
1 transponder of 36 MHz
Coverage China
EIRP max beam 1: 53 dBW
beam 2: 56 dBW
G/T max +7.4 dB/K
Polarization linear H/V
Frequencies Uplink: 14.0 - 14.5 GHz
Downlink: 12.25 - 12.75 GHz

Beacons: 12.251 & 12.749 GHz

Transponder frequency chart (GHz)


Horizontal
Uplink
Horizontal
Downlink
Transponder Vertical
Downlink
Vertical
Uplink
Beam
  12.272 1A   14.022 beam 1 or 2 (36 MHz)
14.0435   1B 12.2935   beam 2
  12.324 2A   14.074 beam 1
14.1045   2B 12.3545   beam 1
  12.385 3A   14.135 beam 1 or 2
14.1655   3B 12.4155   beam 2
  12.446 4A   14.196 beam 1
14.2265   4B 12.4765   beam 1
  12.507 5A   14.257 beam 1 or 2
14.2875   5B 12.5375   beam 2
  12.568 6A   14.318 beam 1
14.3485   6B 12.5985   beam 1
  12.629 7A   14.379 beam 1 or 2
14.4095   7B 12.6595   beam 2
  12.690 8A   14.440 beam 1
14.4705   8B 12.7205   beam 1


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