[Isocops] IBEX Orbit# 194 ATS v002 - approve

Wed Jan 9 19:08:43 EST 2013

All,
	I have looked at the Orbit 194 ATS v002

IBEX_2013_022_o0194a_v002.txt

	and I approve.

	No constraint violation per .ccvr file:

IBEX_2013_022_o0194a_v002.ccvr

	The PL commands in the ATS v002 file match those in the STF

IBEX_2013_022_o0194a_v001.stf

	according to Ken's script (thanks!).

	PL ascending and descending operations make sense with 
respect to each other and to 15 Re ascending, Apogee, and 15 Re 
descending times from

IBEX_2013_022_o0194a_v001.oef

	Star tracker outage for 4 days and 5 hours near apogee 
requires sun-pointing maneuver.

	No Moon in -LO FOV during orbit.

	Ground station contact commands match contact times and bit 
rates in Contacts file

IBEX_2013_Orbit194_v002.caf

	for all 3 contacts.

	Battery cell balancing this orbit, as is appropriate. Should 
do next orbit as well. Second command is FALSE, 1.5 hours after first 
command, hours away from any thing else, all as appropriate.

	Inertial maneuver at the end of orbit 193 left us pointing in 
extra safe directions for ascending and descending macros during 
first half of orbit:

[tapley at ena ~]$ ibex_rotate -o -u 0.574771,-0.74676,-0.334646 -w 
ibex-sun -t 2013/01:22:23:32:34
Quaternion    +0.000000,+0.000000,+0.000000,+0.000000
  points axis  +1.000000,+0.000000,+0.000000
  towards ECI  +0.574771,-0.746760,-0.334646
  which is     R.A. +307.585 Decl. -19.551
  missing      R.A. +305.268 Decl. -19.489 (ibex-sun)
  error is     R.A.   +2.317 Decl.  +0.062
  for a total  2.185 deg
[tapley at ena ~]$ ibex_rotate -o -u 0.574771,-0.74676,-0.334646 -w 
ibex-sun -t 2013/01:27:01:51:54
Quaternion    +0.000000,+0.000000,+0.000000,+0.000000
  points axis  +1.000000,+0.000000,+0.000000
  towards ECI  +0.574771,-0.746760,-0.334646
  which is     R.A. +307.585 Decl. -19.551
  missing      R.A. +309.478 Decl. -18.537 (ibex-sun)
  error is     R.A.   +1.893 Decl.  +1.014
  for a total  2.056 deg

	Sun-pointing maneuver at apogee leaves us pointing in a safe 
direction at maneuver and at following Ascending and Descending 
Macros.

[tapley at ena ~]$ ibex_rotate -o -r +309.554 -d -18.518 -w ibex-sun -t 
2013/01:27:03:40:02
Quaternion    +0.000000,+0.000000,+0.000000,+0.000000
  points axis  +1.000000,+0.000000,+0.000000
  towards ECI  +0.603834,-0.731104,-0.317603
  which is     R.A. +309.554 Decl. -18.518
  missing      R.A. +309.554 Decl. -18.518 (ibex-sun)
  error is     R.A.   +0.000 Decl.  +0.000
  for a total  0.000 deg
[tapley at ena ~]$ ibex_rotate -o -r +309.554 -d -18.518 -w ibex-sun -t 
2013/01:27:05:10:08
Quaternion    +0.000000,+0.000000,+0.000000,+0.000000
  points axis  +1.000000,+0.000000,+0.000000
  towards ECI  +0.603834,-0.731104,-0.317603
  which is     R.A. +309.554 Decl. -18.518
  missing      R.A. +309.618 Decl. -18.502 (ibex-sun)
  error is     R.A.   +0.064 Decl.  +0.016
  for a total  0.063 deg
[tapley at ena ~]$ ibex_rotate -o -r +309.554 -d -18.518 -w ibex-sun -t 
2013/01:31:06:42:03
Quaternion    +0.000000,+0.000000,+0.000000,+0.000000
  points axis  +1.000000,+0.000000,+0.000000
  towards ECI  +0.603834,-0.731104,-0.317603
  which is     R.A. +309.554 Decl. -18.518
  missing      R.A. +313.792 Decl. -17.380 (ibex-sun)
  error is     R.A.   +4.238 Decl.  +1.138
  for a total  4.189 deg

	Inertial maneuver at perigee leaves us pointing in an extra 
safe direction at maneuver and at following Apogee.

[tapley at ena ~]$ ibex_rotate -o -u 0.701247,-0.650044,-0.292739 -w 
ibex-sun -t 2013/01:31:13:51:07
Quaternion    +0.000000,+0.000000,+0.000000,+0.000000
  points axis  +1.000000,+0.000000,+0.000000
  towards ECI  +0.701247,-0.650044,-0.292739
  which is     R.A. +317.170 Decl. -17.022
  missing      R.A. +314.117 Decl. -17.284 (ibex-sun)
  error is     R.A.   +3.053 Decl.  +0.262
  for a total  2.929 deg
[tapley at ena ~]$ ibex_rotate -o -u 0.701247,-0.650044,-0.292739 -w 
ibex-sun -t 2013-02-05T08:17:29.464Z
Quaternion    +0.000000,+0.000000,+0.000000,+0.000000
  points axis  +1.000000,+0.000000,+0.000000
  towards ECI  +0.701247,-0.650044,-0.292739
  which is     R.A. +317.170 Decl. -17.022
  missing      R.A. +318.957 Decl. -15.925 (ibex-sun)
  error is     R.A.   +1.787 Decl.  +1.097
  for a total  2.034 deg

	No -Lo O-mode Commands.

	No overlap to orbit 193 commands apparent by manual check or 
by reference to  http://ibex.unh.edu/cgi-bin/ats.cgi .

	Command Approval Checklist attached.

	-Hi Neg collimator back to operating at nominal voltage.

	Pointing is in -Lo ISM mode operations during January, so sun 
angles are lower and will continue to be lower through January. Note 
that Sun-pointing maneuver means sun angles for descending arc are 
intermediate between desired sun-pointing and standard angles.


At 0:30 -0500 1/9/13, Tim Perry wrote:
>All,
>    Attached are the products for Orbit 194 VER 2. Battery balancing was
>omitted from the first ATS.  All questions and approvals need to be in by
>cob Jan 12, 2013.
>    Thanks
>       Tim

-- 
						- Mark     210-379-4635
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