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To: Jeff Vayda who wrote (3925)	4/16/1999 2:10:00 PM
From: Valueman	Respond to of 29987

Delta launched to 1250km if I remember right. The difference between orbit raising from 920 to 1414 and 1250 to 1414 should at least double the life of the sat in regards to fuel. Pure speculation, but I would say the difference has to be big.

To: Jeff Vayda who wrote (3925)	4/16/1999 2:21:00 PM
From: Mr. Adrenaline	Read Replies (3) \| Respond to of 29987

Jeff, The Delta's dropped us off at 1250 km: boeing.com while the Soyuz was at 920 km: starsem.com The 7 ½ year lifetime is from the lowest altitude injection. (The Zenit was also to drop us off at 920 km.) As to why this was chosen, I would dare guess that any optimization always comes down to money. Seems like somewhere out in the public domain I've seen the mass of the G* satellite posted. Once you know the above, and the mass, any good rocket scientist should be able to tell you how much fuel the Delta launched G* satellites have – it's around 20 years. Mr A