Palapa D1

Indonesia

Spacecraft n°:

Indonesian satellite n°: 10

Also called Telkom 1

Launch data:

Designation	25880 / 99042A
Launch date	12 Aug 1999 - 22:52 UT
Launch site	Kourou, ELA2
Launch vehicle	Ariane 42P (V118)
Mission	Communications
Geostationary orbit:
Perigee / Apogee	km
Eccentricity
Inclination	deg
Period	min

Went operational on 10 Oct 1999; replaced Palapa B2R.

The launch had to be delayed because of unnamed problems with the satellite sub-components. Right after launch the primary and backup motors of the sout solar array were found defective.

Spacecraft data:

Prime contractor	Lockheed Martin
Operator	PT Telkomunikasi of Indonesia (PT Telkom)
Platform	LM A2100
Mass at launch	2763 kg
Mass in GEO	1700 kg
Dimension	4.1 x 22.5 m
Equipment	24 C-Band Transponders, 12 Ext. C-Band Transponders
Solar array	2 deployable solar arrays
Stabilization	3-axis
Propulsion	LEROS-1C
DC power	EOL: 4024 W
Lifetime	15 yrs - Still active

Location:

Date	Position	Remarks
	108°E

Tested at 122.5°E

C-band

Main transponders	24 + 12
Backup transponders
Power
Bandwidth	36 MHz
Coverage	Indonesia
EIRP
Polarization	linear H/V

C-band standard frequency plan (GHz):

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

C-band extended frequency plan (GHz):

Horizontal Downlink	Channel	Vertical Downlink
3.420	25
	31	3.440
3.460	26
	32	3.480
3.500	27
	33	3.520
3.540	28
	34	3.560
3.580	29
	35	3.600
3.620	30
	36	3.640

Mission details:

Telkom 1 was placed in geostationary transfer orbit on Aug 12. Launches had been delayed because of problems with comsat manufacturing. The Ariane 42P launch vehicle delivered its LOX/LH2 H-10-3 third stage and the Telkom 1 payload to a 221 x 35687 km x 7.0 deg GTO 21 min after launch. Telkom 1 is an A2100 series satellite build by Lockheed Martin/Sunnyvale. Telkom 1 is a successor to the Palapa series of satellites, the first of which was launched in 1976.
Telkom 1 has problems with the south solar array drive, due to an manufacturing error.

Ref: #7(JR406,615), #14, #15 - update: 11.08.12