[Isocops] IBEX Orbit# 195 Sun Maneuver

[Mark Tapley]

All,
	I have looked at the Orbit 195 post-apogee pass quaternions 
per the goat herder from 5-Feb.

[tapley at ena ~]$ ibex_rotate -o -z 
0.30323600,0.73726600,-0.20379400,0.56829000 -w ibex-sun -t 
2013/02:09:10:02:09
Quaternion    +0.303236,+0.737266,-0.203794,+0.568290
  points axis  +0.000000,+0.000000,+1.000000
  towards ECI  +0.714367,-0.645154,-0.271028
  which is     R.A. +317.914 Decl. -15.725
  missing      R.A. +322.996 Decl. -14.626 (ibex-sun)
  error is     R.A.   +5.082 Decl.  +1.099
  for a total  5.026 deg


	Z axis will be within 5.026 degrees of the sun at descending.
Sun-Maneuver checklist attached with this information inserted.

	As a check, at time of pass indicated sun angle is 1.644 
degrees, while quaternions indicate 1.428 deg.

[tapley at ena ~]$ ibex_rotate -o -z 
0.30323600,0.73726600,-0.20379400,0.56829000 -w ibex-sun -t 
2013/02:05:19:00:00
Quaternion    +0.303236,+0.737266,-0.203794,+0.568290
  points axis  +0.000000,+0.000000,+1.000000
  towards ECI  +0.714367,-0.645154,-0.271028
  which is     R.A. +317.914 Decl. -15.725
  missing      R.A. +319.397 Decl. -15.792 (ibex-sun)
  error is     R.A.   +1.483 Decl.  +0.066
  for a total  1.428 deg


-- 
						- Mark     210-379-4635
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