[Isocops] Command Checklist not approved due to these caveats/observations
Marty Quinn
martyq92 at gmail.com
Sat Sep 6 02:11:08 EDT 2014
In the Inertial Maneuver : Apogee, item 4 is 53 minutes, not 55 minutes.
In the Inertial Maneuver : Perigee; item 3 is 52 minutes, not 55.
[if these two minutes do not matter, then I approve. ]
In the Inertial Maneuver : Perigee; item 8 doesn't match as follows:
8 Compare SetInrDir in ATS with target vector in the Forecast STF (I am
reading IBEX_2014_258_o0260a_v002.stf on ENA) & verify the vectors match.
· SetInrDir -0.999856,0.016562,-0.003578
· | targetX:-0.99985700000000000|targetY:0.01654500000000000|targetZ:-0.00359500000000000
no match.
Here are my pointing observations:
Apogee pointing in orbit 260 at the start of arc b:
ibex_rotate -o -u -0.995751,0.08801,0.027102 -w ibex-sun -t
2014/09:20:00:06:10
Quaternion +0.000000,+0.000000,+0.000000,+0.000000
points axis +1.000000,+0.000000,+0.000000
towards ECI -0.995751,+0.088010,+0.027102
which is R.A. +174.949 Decl. +1.553
missing R.A. +176.950 Decl. +1.285 (ibex-sun)
error is R.A. +2.001 Decl. +0.268
for a total 2.018 deg
pointing at the start of arc b science:
ibex_rotate -o -u -0.995751,0.08801,0.027102 -w ibex-sun -t
2014/09:20:01:41:16
Quaternion +0.000000,+0.000000,+0.000000,+0.000000
points axis +1.000000,+0.000000,+0.000000
towards ECI -0.995751,+0.088010,+0.027102
which is R.A. +174.949 Decl. +1.553
missing R.A. +177.010 Decl. +1.259 (ibex-sun)
error is R.A. +2.061 Decl. +0.294
for a total 2.081 deg
pointing at the end of orbit 260 arc b science:
ibex_rotate -o -u -0.995751,0.08801,0.027102 -w ibex-sun -t
2014/09:24:10:21:50
Quaternion +0.000000,+0.000000,+0.000000,+0.000000
points axis +1.000000,+0.000000,+0.000000
towards ECI -0.995751,+0.088010,+0.027102
which is R.A. +174.949 Decl. +1.553
missing R.A. +181.036 Decl. -0.440 (ibex-sun)
error is R.A. +6.087 Decl. +1.993
for a total 6.405 deg
Perigee pointing in orbit 260 for the start of arc a in orbit 261.
ibex_rotate -o -u -0.999856,0.016562,-0.003578 -w ibex-sun -t
2014/09:24:12:28:49
Quaternion +0.000000,+0.000000,+0.000000,+0.000000
points axis +1.000000,+0.000000,+0.000000
towards ECI -0.999856,+0.016562,-0.003578
which is R.A. +179.051 Decl. -0.205
missing R.A. +181.117 Decl. -0.474 (ibex-sun)
error is R.A. +2.066 Decl. +0.269
for a total 2.083 deg
Regards,
Marty
Marty Quinn
GISLAB/Space Science Center UNH
marty.quinn at unh.edu <marty at drsrl.com>
603 988-7107
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