Intelsat 21

Also called IS-21, S2863

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General

Designation	38749 / 12045A
Launch date	19 Aug 2012
Country of origin	International
Mission	Telecommunications
Geostationary orbit	58°W
Launch vehicle	Zenit Sea Launch #33

Tested at 51.3°W. Replaced Panamsat 9

sat-index articles

Technical data

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Lyngsat transponder loading

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EIRP coverage (dBW)

C-band
Ku-band: Brazil
Ku-band: Mexico
Ku-band: mobility

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Specifications

Prime contractor	Boeing
Platform	HS702MP
Mass at launch	5984 kg
Dry mass
Dimension
Solar array
Stabilization	3-axis
DC power	EOL: 11.8 kW
Design lifetime	18 years

TT&C: downlink: 11451.25/11453.25 MHz or 11451.75/11453.75 MHz
uplink: 13750.5 MHz and 13994.5 MHz

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C-band

Main transponders	24
Backup transponders
Power	36 MHz
Bandwidth
Coverage	Americas
EIRP max
G/T max
Polarization	linear H/V
Frequencies	uplink: 5.925-6.425 GHz downlink: 3.7-4.2 GHz

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Ku-band

Main transponders	36 (36 MHz equivalent)
Backup transponders
Power
Bandwidth	27, 36 and 54 MHz
Coverage	Brazilian beam mobility beam: South, Central and North West Atlantic
EIRP max
G/T max
Polarization	linear H/V
Frequencies	uplink: 14.0-14.5 GHz downlink: 11.45-12.20 GHz

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