Minutes symbol, spacing

Spacing, hyphens, and italics. When a unit symbol is given after a number, a space is always left between the number and the symbol with the exception of cases where the symbol appears in the superscript position, such as degree, minute, and second of plane angles. The symbol for degree Celsius may be written either with or without a space before the degree symbol. For example,... 

Exception 1 Do not leave a space between a number and the percent, angular degree, angular minute, or angular second symbols. 

One must distinguish two phases which is the specificity of this task. A first phase, lasting a very short time, just a few minutes, which starts from the ignition of the launcher up to the orbital injection of the payload (telecom. Earth, and deep space observation satellites, spatial telescope like recently Herschel and Planck, the automated transport vehicle [ATV] from Astrium Space Transportation baptized symbolically Jules Verne). This is followed by a second phase, of a very long duration, 15 years of orbital fife for telecom satellites. 

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