Protostar 1

 2008-034A

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Protostar 1 is an FS-1300(HP). China Telecommunications Broadcast Satellite Corp (Chinasat), a division of PRC MPT (Ministry of Posts and Telecomms), ordered Chinasat 8 with 16 Ku and 36 C. Was to be launched late 1998 by CZ-3B. Export licence killed in 1998 Dec. Put in storage; in 2007 sold to Protostar Ltd for launch May 2008 aboard Ariane 5.

Protostar Ltd. had its HQ in Bermuda with engineering at Protostar Satellite Systems (PSS) in San Francisco; would provide Asian satellite TV broadcasting at 98.5E. The EADS press kit implies that the Loral and Arianespace contract is with PSS, and so that Protostar 1 is a US and not a Bermudan satellite. ITU registration on 2008 Oct was by Belarus. Continuing legal problems led to the sale of Protostar to Intelsat in 2009 Oct as IS-25.

Mass 4191 kg launch 1774 kg dry, size 3.8 x 2.4 x 2.1m with 31.1m span and 6.2m deployed height. Ariane 5 used EPC-C, H175/Vulcain 2, EAP-B, ESC-A, Sylda 5A and 17m long fairing. ESC-A, VEB and Cone 3936 were assembled at Bremen.

Protostar
Date	Time	Event	Orbit
2008 Jul 7	2147	Launch by Ariane 5ECA	CSG ELA3
		T+0:00 Launch
		T+2:13 EAP sep
		T+3:08 Fairing sep
	2155	T+8:50 EPC MECO
		T+8:55 EPC sep	-1071 x 164 x 7.3
	2156	T+9:00 ESC-A burn
	2211	T+24:48 ESC-A MECO
	2214	T+27:30 Proto 1 sep
	2216	T+29:10 Sylda sep
	2222	T+35:32 BADR 6 sep
		T+45:33 end of V184 mission
			631.59 251 x 35761 x 2.0
2008 Jul 9			776.24 7469 x 35731 x 0.7
2008 Jul 10			1024.17 18836 x 35721 x 0.2
2008 Jul 13			1288.68 32326 x 33372 x 3.0
2008 Jul 14			1431.70 35660 x 35740 x 0.1
2008 Jul 15			1433.14 35702 x 37555 x 0.05
2008 Aug 3			1436.18 35779 x 35796 x 0.01 GEO 98.3E
2009 Oct		Bought by Intelsat and renamed IS-25
2009 Nov 1			1436.12 35777 x 35796 x 0.0 GEO 98.4E
2010 Jan 8		Move out
2010 Feb 7			1444.05 35929 x 35954 x 0.0 GEO 37.8E+2.0W/d
2010 Mar 15		Arrive at 31.5W
2010 Apr 13			1436.10 35774 x 35798 x 0.0 GEO 31.5W