Thaicom 1

 1993-078B

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Thaicom 1 was the first lightweight HS-376L model, using a Star 30BP solid apogee motor and with a dry mass of only 436 kg. The satellite carried 644 kg of fuel at launch, with 193 kg remaining at BOL, for masses of 1080 kg and 629 kg respectively. The HS-376L satellite was 2.16m in dia, 2.6 m high at launch, with a height of 6.7 m after deployment of the solar panel skirt and antennas.

Thaicom was built for the Shinawatra Satellite Co, Bangkok, Thailand, a subsidiary of the Shinawatra Computer and Communications Group (SC&C;). It was launched as a Spelda Dedicated Satellite payload (SDS) on Ariane. The Ariane SPELDA, VEB and associated equipment had a mass of 1353 kg, and the dry mass of the H10+ third stage was 1242 kg.

In Jul 1997 Thaicom 1 was moved to 120E and renamed Thaicom 1A.

Thaicom 1
Date	Time	Event	Orbit
1993 Dec 18	0127	Launch by Ariane
1993 Dec 18	0129	PAL sep (2:21)
	0130	St 1 sep (3:32)
	0131	Fairing sep (4:31)
	0132	St 2 sep (5:44)
	0132	St 3 TIG (5:49)
	0145	St 3 MECO (18:13)
	0148	DBS 1 sep (21:37)
	0150	Mini-Spelda top sep (23:07)
	0152	Thaicom 1 sep (25:11)
	0152	H10+ sep burn (25:13)
	0156	H10+ end of mission (29:12)
	0730?	Apo 1 at 88E
	1230?	Peri 1
	1800?	Apo 2 at 71W
	2300?	Peri 2
1993 Dec 19	0500?	Apo 3 at 125E
1993 Dec 19			638.97 214 x 36177 x 3.9
	1000?	Peri 3
	1530?	Apo 4 at 33W
	2000?	Peri 4
1993 Dec 20	0200?	Apo 5 at 170E
	0700?	Peri 5
	1230?	Apo 6 at 9E
	1730?	Peri 6
	2300?	Apo 7 at 150W
1993 Dec 21	0430?	Peri 7
	1000?	Apo 8 at 48E
1993 Dec 21	0943?	Star 30BP burn	1403.92 34093 x 36215 x 0.1 GEO 49.9E+8.3E
1993 Dec 22			1378.17 33927 x 35362 x 0.4 GEO 56.4E+15.2E
1993 Dec 23	2200?	mv in
1993 Dec 26			1436.10 35771 x 35802 x 0.1 GEO 78.6E
1994 Jan 14			1436.11 35765 x 35808 x 0.1 GEO 78.5E
1997 Mar 10			1436.10 35762 x 35811 x 0.0 GEO 78.4E
1997 Jul		mv out	GEO 78E
1997 Jul 31			GEO 119E
1997 Aug 17			1436.13 35781 x 35793 x 0.0 GEO 120.0E
1999 Oct 17			1436.07 35781 x 35790 x 0.1 GEO 120.1E
2002 Aug 3			1436.11 35781 x 35792 x 0.1 GEO 120.0E