Panamsat 8

USA

Also called PAS 8

Launch data:

Designation 25522 / 98065A
Launch date 04 Nov 1998
Launch site Baikonur, LC-81/23
Launch vehicle  Proton-K/DM3 (#260)
Mission Telecommunications
Geostationary orbit:
Location 166°E

In October 1998, FCC authorized PanAmSat to operate and launch the satellite. Launch worth $70 million

Two Ku-band antennas have pointing problems. The satellite is not providing its intended footprint coverage. A partial loss was claimed from insurances because of the loss in geographic coverage, connectivity and switchability of certain of the Ku-band transponders.

On 10 Sep 1999 the satellite experienced an outage from 13:00 UT to 16:10 UT when stabilization was lost (uncontrolled spin).

Specifications

Prime contractor Space Systems/Loral
Platform FS-1300
Mass at launch 3800 kg
Mass in orbit  
Dimension  
Solar array  
Stabilization 3-axis
DC power 10000 W
Design lifetime 15 years

C-band


Main transponders 24
Backup transponders 8 
Power 50 W
Bandwidth 36 MHz
Coverage Eastern Asia & Pacific Rim
EIRP max 40 dBW
G/T max 0 dB/K
Polarization linear H/V
Frequencies uplink: 5.925-6.425 GHz
downlink: 3.7-4.2 GHz

Beacon: 3.702 GHz, 6 dBW global

C-band transponder frequency chart (GHz)

Horizontal
Uplink 		Horizontal
Downlink 		Transponder Vertical
Downlink 		Vertical
Uplink
5.945   1  3.720  
  3.740 2    5.965
5.985   3  3.760  
  3.780 4    6.005
6.025   5  3.800  
  3.820 6    6.045
6.065   7  3.840  
  3.860 8    6.085
6.105   9  3.880  
  3.900 10   6.125
6.145   11 3.920  
  3.940 12   6.165
6.185   13 3.960  
  3.980 14   6.205
6.225   15 4.000  
  4.020 16   6.245
6.265   17 4.040  
  4.060 18   6.285
6.305   19 4.080  
  4.100 20   6.325
6.345   21 4.120  
  4.140 22   6.365
6.385   23 4.160  
  4.180 24   6.405

Ku-band

Main transponders 24
Backup transponders 8 
Power 100 W
Bandwidth 36 MHz
Coverage 3 beams (all beams have a weak spot to California):
Northeast Asia
Southeast Asia (not usable?)
Australia
EIRP max 54 dBW
G/T max -2 dB/K
Polarization linear H/V
Frequencies uplink: 14.00-14.50 GHz
downlink: 12.250-12.750 GHz

Ku-band transponder frequency chart (GHz)

Vertical
Uplink 		Vertical
Downlink 		Transponder Horizontal
Downlink 		Horizontal
Uplink 		Beam
14.036   13K 12.286   SE Asia or Australia
  12.286 1K   14.036 Northeast Asia
14.076   14K 12.326   SE Asia or Australia
  12.326 2K   14.076 Northeast Asia
14.116   15K 12.366   SE Asia or Australia
  12.366 3K   14.116 Northeast Asia
14.156   16K 12.406   SE Asia or Australia
  12.406 4K   14.156 Northeast Asia
14.196   17K 12.446   SE Asia or Australia
  12.446 5K   14.196 Northeast Asia
14.236   18K 12.486   SE Asia or Australia
  12.486 6K   14.236 Northeast Asia
14.276   19K 12.526   SE Asia or Australia
  12.526 7K   14.276 Northeast Asia
14.316   20K 12.566   SE Asia or Australia
  12.566 8K   14.316 Northeast Asia
14.356   21K 12.606   SE Asia or Australia
  12.606 9K   14.356 Northeast Asia
14.396   22K 12.646   SE Asia or Australia
  12.646 10K   14.396 Northeast Asia
14.436   23K 12.686   SE Asia or Australia
  12.686 11K   14.436 Northeast Asia
14.476   24K 12.726   SE Asia or Australia
  12.726 12K   14.476 Northeast Asia

Astrophilately covers:

Panamsat

Launch cancel Baikonur. Credit: J. Vd Dr.

Ref.: #3, #7 - update: 20.04.19 Home