Hellas Sat 2

Greece

International Sat. n°:

Greece satellite n°:

Also called NSS K-TV, Intelsat APR3 or Sinosat 1B or Intelsat K-TV

Launch data:

Designation:27811 / 03020A
Launch date13 May 2003 - 22:10 UT
Launch site CC, SLC-41
Launch vehicle: Atlas V 401 (#AV-002)
Mission:Commercial: Communications
Geostationary orbit:
Perigee / Apogee 35769 x 35803 km
Eccentricity 4,03E-04
Inclination 0.01 deg
Period 1436.08 min

Ordered as Intelsat KTV. Transfered to NSS on 30 Nov 1998. The satellite was so delayed that NSS did not want it any more. It was sold to Intelsat in early 2001 and renamed Intelsat APR 3. It should have served at 85°E (originally it was planned for 95°E). Sino Satellite Communications would use 6 tps and would be allowed to use 2 C-band tps on the to-be-launched Intelsat satellite at 178°E. In Sep 2001, another problem occured: Intelsat cancelled the acquisition of the satellite because the export licence to have it launched in China (Long March 3B) was not granted by the US government.

In 2002, the satellite was sold to become Hellas Sat 2.

Astra TechCom services will TT&C services for the first year after launch. They will also install 2 ground control stations in Greece and Cyprus.

Specifications:

Prime contractorAstrium
PlatformEurostar-2000+
OperatorHellas-Sat Consortium Ltd.
Mass at launch3250 kg
Mass in orbit 2017 kg
Dry mass 1462 kg
Dimension 3.19 x 3.48 x 7.89 m
Solar array 32.32 m span
Stabilization 3-axis
DC powerEOL: 7600 W
Design lifetime15 yrs - still active

Location:

DatePositionRemarks
  39° E 
 Nov 2010  39.06° E 

The satellite can operate in collocation with up to 3 satellites

Ku-band

Main transponders 30
Backup transponders  
Power Fixed & Steerable beam 1: 101 W (TWTA)
Fixed & Steerable beam 2: 105 W (TWTA)
Bandwidth 36 MHz
Coverage EIRP F1: Europe
F2: Europe
S1: Southern Africa
S2: Middle East
G/T Fixed beam 1: +4.4 - -1 dB/K
Fixed beam 2: +4.8 - -3 dB/K
Steerable beam 1: +8.7- 0 dB/K
Steerable beam 2: +7.2 - -1 dB/K
SFD -91 to -73 dBW/m²
Polarization linear H/V
Frequencies Uplink: 13.75-14 GHz / 14-14.25 GHz / 14.25-14.5 GHz
Downlink: 12.5-12.75 GHz / 10.95-11.2 GHz / 11.45-11.7 GHz

Beacon: 11.4515 GHz

12 transponders that can be switched on a transponder-by-transponder basis among 18 available channels (01-06, 07-12, 25-30).

Slot frequency plan (GHz)

Horizontal
Downlink 		Horizontal
Uplink 		Slot Vertical
Uplink 		Vertical
Downlink 		Uplink/Downlink beams
12.524   19 13.768   F1/F1
  13.768 13   12.524 F1/F1
12.565   20 13.809   F1/F1
  13.809 14   12.565 F1/F1
12.606   21 13.850   F1/F1
  13.805 15   12.606 F1/F1
12.647   22 13.891   F1/F1
  13.891 16   12.647 F1/F1
12.688   23 13.932   F1/F1
  13.932 17   12.688 F1/F1
12.729   24 13.973   F1/F1
  13.973 18   12.729 F1/F1
           
12.565 13.809 14     F1/S1
12.606 13.805 15     F1/S1
12.565 14.065 38     S2/S1
12.606 14.106 39     S2/S1
           
12.524   43 14.024   S2/F1
  14.024 37   12.524 S2/F1
12.565   44 14.065   S2/F1
  14.065 38   12.565 S2/F1
12.606   45 14.106   S2/F1
  14.106 39   12.606 S2/F1
12.647   46 14.147   S2/F1
  14.147 40   12.647 S2/F1
12.688   47 14.188   S2/F1
  14.188 41   12.688 S2/F1
12.729   48 14.229   S2/F1
  14.229 42   12.729 S2/F1
           
  14.021 01   10.971 F2/F2
  14.062 02   11.012 F2/F2
  14.103 03   11.053 F2/F2
  14.144 04   11.094 F2/F2
  14.185 05   11.135 F2/F2
  14.226 06   11.176 F2/F2
           
10.971 14.021 01     F2/S2
11.012 14.062 02     F2/S2
11.053 14.103 03     F2/S2
11.094 14.144 04     F2/S2
11.135 14.185 05     F2/S2
11.176 14.226 06     F2/S2
           
12.524   31 13.768   S1/S1
  13.768 25   12.524 S1/S1
12.565   32 13.809   S1/S1
  13.809 26   12.565 S1/S1
12.606   33 13.850   S1/S1
  13.805 27   12.606 S1/S1
12.647   34 13.891   S1/S1
  13.891 28   12.647 S1/S1
12.688   35 13.932   S1/S1
  13.932 29   12.688 S1/S1
12.729   36 13.973   S1/S1
  13.973 30   12.729 S1/S1
           
11.471   07 14.271   S2/S2
11.512   08 14.312   S2/S2
11.553   09 14.353   S2/S2
11.594   10 14.394   S2/S2
11.635   11 14.435   S2/S2
11.676   12 14.476   S2/S2
           
    07 14.271 11.471 S2/F2
    08 14.312 11.512 S2/F2
    09 14.353 11.553 S2/F2
    10 14.394 11.594 S2/F2
    11 14.435 11.635 S2/F2
    12 14.476 11.676 S2/F2

Comments:

30 Ku-band; television broadcasting services for the 2004 Summer Olympic Games in Athens.

Ref: #7, #15, #226 - update: 20.08.09