[Isocops] IBEX Orbit# 291 ATS (24 Jun 15 - 3 Jul 15)

Ken Fairchild fair-play at comcast.net
Thu Jun 11 15:00:13 EDT 2015


Marty, 

The time difference is related to the outage. Normally the perigee RepointingManeuverStart event would have the same time stamp as the ManeuverWindowStart event. But this time we're in an outage for 9+ hours after the maneuver window opens. We don't look at the time the perigee maneuver actually starts when generating the STF so the transition to housekeeping still occurs 30 minutes before 14 Re. 

Ken 

----- Original Message -----

From: "Marty Quinn" <martyq92 at gmail.com> 
To: "Ibex Mission Operations" <ibexops at gmail.com> 
Cc: "David Heirtzler" <dheirtzl at atlas.sr.unh.edu>, "IBEX FDG" <ibex at applieddefense.com>, "ISOC at New Hampshire" <isocops at lists.sr.unh.edu>, "Ken Fairchild" <fair-play at comcast.net>, "Marty Quinn" <marty.quinn at unh.edu>, "Michelle Reno" <mreno at swri.edu>, "Nigel Angold" <ngangold at earthlink.net>, "Paul Janzen" <paul.janzen at umontana.edu>, "Robert Lockwood" <robert.lockwood at orbitalatk.com>, "Ryan Tyler" <ryan.tyler at orbitalatk.com>, "Sheral Wesley" <sheral.wesley at orbitalatk.com>, "Tim Perry" <tim.perry at orbitalatk.com> 
Sent: Thursday, June 11, 2015 2:00:01 PM 
Subject: Re: [Isocops] IBEX Orbit# 291 ATS (24 Jun 15 - 3 Jul 15) 

Hi All, 

I approve orbit 291 ATS commands. 

NOTE: the transition to housekeeping occurs 651.5 minutes before thrust enable presumably due to the insertion of the contact prior to maneuver. 

There are two moon in FOV sessions, the second one presumably ends during apogee. 

The orbit pointing follows. 

Regards, 

Marty 

------------------------------------------- 
Orbit 291 Spacecraft Pointing Verifications 
------------------------------------------- 

ibex_orbit -r 291 -D apogee -R E 
ibex_orbit -r 291 -D perigee -R E 
ibex_orbit -r 291 -D 14 -R E 
ibex_orbit -r 291 -D 15 -R E 
#--------------------------------------------------------- 
#Ibex Orbit positions times are in sync with the Command Checklist times. 
#--------------------------------------------------------- 
[msq at ena ~]$ ibex_orbit -r 291 -D apogee -R E 
0291 
2015/06:28:23:04:37 
[msq at ena ~]$ ibex_orbit -r 291 -D perigee -R E 
0291 
2015/07:03:10:47:14 
[msq at ena ~]$ ibex_orbit -r 291 -D 14 -R E 
0291 
2015/06:24:21:19:54 2015/07:03:00:18:34 
[msq at ena ~]$ ibex_orbit -r 291 -D 15 -R E 
0291 
2015/06:24:22:47:15 2015/07:02:22:53:02 



#--------------------------------------------------------- 
#Here are the spacecraft pointing positions for Orbit 291. 
#--------------------------------------------------------- 
[msq at ena 290]$ #Perigee Orbit 290 pointing: 
[msq at ena 290]$ ibex_rotate -o -u -0.003892,0.921354,0.388706 -w ibex-sun -t 2015/06:24:01:09:42 
Quaternion +0.000000,+0.000000,+0.000000,+0.000000 
points axis +1.000000,+0.000000,+0.000000 
towards ECI -0.003892,+0.921354,+0.388706 
which is R.A. +90.242 Decl. +22.874 
missing R.A. +92.245 Decl. +23.433 (ibex-sun) 
error is R.A. +2.003 Decl. +0.559 
for a total 1.925 deg 

#At beginning of orbit:291 ascending Arc A: 
ibex_rotate -o -u -0.003892,0.921354,0.388706 -w ibex-sun -t 2015/06:24:22:47:17 
Quaternion +0.000000,+0.000000,+0.000000,+0.000000 
points axis +1.000000,+0.000000,+0.000000 
towards ECI -0.003892,+0.921354,+0.388706 
which is R.A. +90.242 Decl. +22.874 
missing R.A. +93.118 Decl. +23.397 (ibex-sun) 
error is R.A. +2.876 Decl. +0.523 
for a total 2.696 deg 

#at end of orbit:291 descending Arc A: 
ibex_rotate -o -u -0.003892,0.921354,0.388706 -w ibex-sun -t 2015/06:28:11:32:10 
Quaternion +0.000000,+0.000000,+0.000000,+0.000000 
points axis +1.000000,+0.000000,+0.000000 
towards ECI -0.003892,+0.921354,+0.388706 
which is R.A. +90.242 Decl. +22.874 
missing R.A. +96.867 Decl. +23.253 (ibex-sun) 
error is R.A. +6.625 Decl. +0.379 
for a total 6.107 deg 

#Apogee orbit:291 pointing: 
Quaternion +0.000000,+0.000000,+0.000000,+0.000000 
points axis +1.000000,+0.000000,+0.000000 
towards ECI -0.077295,+0.918753,+0.387194 
which is R.A. +94.809 Decl. +22.780 
missing R.A. +96.943 Decl. +23.250 (ibex-sun) 
error is R.A. +2.134 Decl. +0.470 
for a total 2.020 deg 

#At beginning of orbit:291 ascending arc B: 
Quaternion +0.000000,+0.000000,+0.000000,+0.000000 
points axis +1.000000,+0.000000,+0.000000 
towards ECI -0.077295,+0.918753,+0.387194 
which is R.A. +94.809 Decl. +22.780 
missing R.A. +97.013 Decl. +23.247 (ibex-sun) 
error is R.A. +2.204 Decl. +0.467 
for a total 2.082 deg 

#At end of orbit:291 descending arc B: 
Quaternion +0.000000,+0.000000,+0.000000,+0.000000 
points axis +1.000000,+0.000000,+0.000000 
towards ECI -0.077295,+0.918753,+0.387194 
which is R.A. +94.809 Decl. +22.780 
missing R.A. +101.484 Decl. +23.029 (ibex-sun) 
error is R.A. +6.675 Decl. +0.249 
for a total 6.153 deg 

#Perigee orbit:291 pointing: 
Quaternion +0.000000,+0.000000,+0.000000,+0.000000 
points axis +1.000000,+0.000000,+0.000000 
towards ECI -0.152836,+0.910580,+0.384037 
which is R.A. +99.528 Decl. +22.584 
missing R.A. +101.953 Decl. +22.990 (ibex-sun) 
error is R.A. +2.425 Decl. +0.406 
for a total 2.272 deg 

#Apogee orbit:291 + 1 pointing: 
Quaternion +0.000000,+0.000000,+0.000000,+0.000000 
points axis +1.000000,+0.000000,+0.000000 
towards ECI -0.152836,+0.910580,+0.384037 
which is R.A. +99.528 Decl. +22.584 
missing R.A. +106.638 Decl. +22.524 (ibex-sun) 
error is R.A. +7.110 Decl. +0.060 
for a total 6.566 deg 





Marty Quinn 
GISLAB/Space Science Center UNH 
marty.quinn at unh.edu 
603 988-7107 

On Thu, Jun 11, 2015 at 11:51 AM, Ibex Mission Operations < ibexops at gmail.com > wrote: 



Guys, 
Here are the planning files and ATS for Orbit# 291. Please respond to this email thread with questions, comments and approvals. 
Approvals are required before 14 June 15 @ 1400 UTC 
​Note the following; 
1. Perigee Battery Balancing​ 
# Orbit# 291 PERIGEE: Battery Balancing Commands 
# 2015-07-03T10:47:14.720Z,Perigee,orbit:291 
@ECT_SetLongEclipseFlag TRUE $TIME=2015/07:03:12:00:00 
@ECT_SetLongEclipseFlag FALSE $TIME=2015/07:03:13:30:00 
# 2015-07-03T14:37:25.782Z,10RECrossing,oMode:0,direction:asc,orbit:291 
​2. Moon in Lo FOV 
# 2015-06-25T00:13:42.673Z,MoonInLoFovStart,orbit:291 
# 2015-06-28T10:29:38.805Z,MoonInLoFovStop,orbit:291 
3. Command Load Constraint Violation Report 
IBEX_2015_175_o0291a_v001.scr 
========================== 
HARD CONSTRAINT VIOLATIONS 
========================== 
NO VIOLATIONS. 
========================== 
SOFT CONSTRAINT VIOLATIONS 
========================== 
NO VIOLATIONS. 
============== 
OTHER MESSAGES 
============== 
NO MESSAGES. 















​ 




-- 
Sheral R. Wesley 
SPVR., Satellite Operations 
IBEX Mission OPS 
CYGNUS Mission Planning 
(304) 279-6678 


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