Morelos 3

Mexico

Spacecraft n°:

Mexican spacecraft n°: 7

Also called Satmex 5

Launch data:

Designation	25558 / 98070A
Launch date	06 Dec 1998
Launch site	Ko, ELA-2
Launch vehicle	Ariane-42L (V114)
Mission	Telecommunications
Geostationary orbit on:
Perigee / Apogee	km
Eccentricity
Inclination	°
Period	min

Became operational on 1st Feb 1999

Specifications

Prime contractor	Hughes
Platform	HS-601HP
Operator	SATMEX Mexico City
Mass at launch	3550 kg
Mass in orbit	1950 kg
Dimension	stowed: 2.6 x 3.5 x 5.5 m
Solar array	26.3 m span, dual-junction gallium arsenide
Stabilization	3-axis
DC power	BOL: 8400 W EOL: 7615 W
Design lifetime	15 years

Location:

Date	Position	Remarks
	116.8°W

Xenon ion propulsion device (XIPS)

Description

SATMEX 5 is a Hughes 601HP or "high power" version of the body-stabilized spacecraft. It features more than 7,000 watts of payload power, at least 10 times the capacity of Morelos II. Through such innovations as dual-junction gallium arsenide solar cells, radiation-cooled traveling-wave tube amplifiers (TWTAs), advanced battery technology, and a xenon ion propulsion system, XIPS, the 601HP can carry payloads twice as powerful as those on the HS 601 models, with an expected 15-year mission lifetime.

C-band

Main transponders	24
Backup transponders	6
Power	36 W (TWTA)
Bandwidth	36 MHz
Coverage	fully covers the United States, southern Canada and virtually all of Latin America. Its only shortcoming is Brazil, where it covers about one-half of the country.
G/T max	-3.0 dB/K
EIRP max	38 dBW
SFD max	-92.2 dBW/m²
Polarization	linear H/V

C-band transponder frequency chart

Ku-band:

Main transponders	24
Backup transponders	8
Power	12 transponders: 110 W (TWTA) 12 transponders: 132 W (TWTA)
Bandwidth	36 MHz
Coverage	beam 1: Mexico and CONUS beam 2: Canada to Argentina
EIRP max	ku1: 49 dBW ku2: 46 dBW
G/T max	ku1: 1.5 dB/K ku2: -1.5 dB/K
SFD max	-95 dBW/m²
Polarization	linear H/V

Ku-band transponder frequency chart (GHz)

Horizontal Uplink	Horizontal Downlink	Transponder	Vertical Downlink	Vertical Uplink
	11.720	1		14.020
14.040		2	11.740
	11.600	3		14.060
14.080		4	11.780
	11.800	5		14.100
14.120		6	11.820
	11.840	7		14.140
14.160		8	11.860
	11.880	9		14.180
14.200		10	11.900
	11.920	11		14.220
14.240		12	11.940
	11.960	13		14.260
14.280		14	11.980
	12.000	15		14.300
14.320		16	12.020
	12.040	17		14.340
14.360		18	12.060
	12.080	19		14.380
14.400		20	12.100
	12.120	21		14.420
14.440		22	12.140
	12.160	23		14.460
14.480		24	12.180

Ref: #15, #71 - update: 04.01.11