Insat-3 B

India

International Sat. n°:

Indian satellite n°: 30

Launch data:

Designation26108 / 00016B
Launch date21 Mar 2000 - 23:28:19 UT
Launch site:Ko, ELA3
Launch vehicle Ariane-5 G (V-128)
MissionGovernment: Communications and meteorology
Geostationary orbit:
Perigee / Apogee 35754 x 35816 km
Eccentricity 7,59E-04
Inclination 0.08 deg
Period 1436.09 min

Specifications

Prime contractorISRO
PlatformINSAT 3
OperatorIndian Space Research Organization (ISRO)
Mass at launch2070 kg
Mass in orbit 
Dry mass970 kg
Basic shape  Box + 2 panels
Dimension1.93 x 1.7 x 1.65 m
Solar array 14.7 m span
Stabilization 3-axis
DC power1700 W (24 Ah Ni-Cd battery)
Design lifetime12 years

Location:

DatePositionRemarks
  83° E 
 Dec 2011  83.09° E 


End of live:

End of Operation:  Dec 2011
Cause:  

Has a 440 Newton liquid apogee motor. Two deployable and 3 fixed antennas.

No meteorological payload

S-band:

Main transponders 1
Backup transponders  
Power  
Bandwidth  
Coverage India and most of the hemisphere
EIRP max 40.34 dBW
G/T max 4.2 dB/K
Polarization  
Frequencies uplink forward: 6.450-6.470 GHz
downlink forward: 2.500-2.520 GHz
downlink return: 2.680-2.700 GHz

Credit: ISRO


For Mobile Satellite Service

Transponder frequency chart (GHz):

Uplink Downlink Transponder
2.6745   1 
2.6855   2 

Extended C-band:

Main transponders 12
Backup transponders  
Power 15 W
Bandwidth 36 MHz
Coverage & EIRP max India 44.3 dBW
G/T max 3 dB/K
Polarization  
Frequencies uplink: 6.735-6.975 GHz
downlink: 4.510-4.750 GHz

Transponder frequency chart (GHz)

Horizontal
Uplink 		Horizontal
Downlink 		Transponder Vertical
Downlink 		Vertical
Uplink 		Remarks
    to S-band   6.460  
           
  4.530 13H   6.755  
4.530   13V 6.755    
  4.570 14H   6.795  
4.570   14V 6.795    
  4.610 15H   6.835  
4.610   15V 6.835    
  4.650 16H   6.875  
4.650   16V 6.875    
  4.690 17H   6.915  
4.690   17V 6.915    
  4.730 18H   6.955  
4.730   18V 6.955    

Ku-band:

Main transponders 3 
Backup transponders  
Power 55 W
Bandwidth 2 x 72 and 1 x 77 MHz
Coverage India
EIRP max 50 dBW
G/T max 5.7 dB/K
Polarization  
Frequencies uplink: 14.25-14.5 GHz
downlink: 11.45-11.70 GHz

Beacon: 11.6995 GHz

Transponder frequency chart (GHz)

Uplink Downlink Transponder Bandwidth
14.2925 11.4925 1  77 MHz
14.3750 11.5750 2  72 MHz
14.4550 11.6550 3  72 MHz

MIssion details:

Insat 3B was accelerated to replace the lost Insat 2D and carries a pure telecom payload of C, Ku and S band transponders, unlike earlier Insats which also had weather instruments. The satellite was built by ISRO, the Indian Space Research Organization, and has a dry mass of 970 kg.
Ariane 5's EPS upper stage was left in a 699 x 35445 km x 7.0 deg orbit. The EPC core stage reentered over the Galapagos Islands after completing most of one orbit.
Ref: #7(JR422), #120, #206, #226 - update: 10.02.12