[Isocops] IBEX Orbit #366 ATS ( 7 - 16 May ) - v001 approval

Tue Apr 25 09:08:29 EDT 2017

All, 

I have looked at the orbit 366 ATS, 

IBEX_2017_127_o0366a_v001.scr, 

and I approve. 

The only constraint violations in 

IBEX_2017_127_o0366a_v001.ccvr 

are from the removal of the 

ACT_SetSpinPulseProtectEnable Enable 

commands (2); the violations are expected. 

The PL commands in the v001 ATS match those in the v002 STF, 

IBEX_2017_127_o0366a_v002.stf. 

Ascending and descending command sequences are consistent with each other and 15 Re ascending, the apogee maneuver time and 15 Re descending as determined from the OEF, 

IBEX_2017_127_o0366a_v001.oef, 

and as verified with ibex_orbit. 

There is one star tracker outage. The outage starts 1+ days after apogee and runs for almost two days. Some despinning may be required due to this outage. 

There are no moon in Lo FOV sessions. 

The ground station command sequences are correct and the timing and bit rates match those in the contacts file, 

IBEX_Orbit366_Contacts.txt, 

for all contacts (3). 

No battery cell balancing this orbit; we'll do it again in the next orbit. 

The inertial maneuver at perigee of orbit 365 left us pointing in safe directions for the orbit 366 arc A ascending and descending sequences: 

ibex_rotate -o -u 0.714991,0.645183,0.269306 -w ibex-sun -t 2017/05:07:16:17:31 

Quaternion +0.000000,+0.000000,+0.000000,+0.000000 

points axis +1.000000,+0.000000,+0.000000 

towards ECI +0.714991,+0.645183,+0.269306 

which is R.A. +42.062 Decl. +15.623 

missing R.A. +44.575 Decl. +16.903 (ibex-sun) 

error is R.A. +2.513 Decl. +1.280 

for a total 2.731 deg 

ibex_rotate -o -u 0.714991,0.645183,0.269306 -w ibex-sun -t 2017/05:11:03:26:12 

Quaternion +0.000000,+0.000000,+0.000000,+0.000000 

points axis +1.000000,+0.000000,+0.000000 

towards ECI +0.714991,+0.645183,+0.269306 

which is R.A. +42.062 Decl. +15.623 

missing R.A. +48.064 Decl. +17.842 (ibex-sun) 

error is R.A. +6.002 Decl. +2.219 

for a total 6.161 deg 

The inertial maneuver at apogee leaves us pointing in safe directions at the time of the maneuver and for arc B ascending and descending sequences: 

ibex_rotate -o -u 0.661389,0.6922,0.288831 -w ibex-sun -t 2017/05:11:05:09:20 

Quaternion +0.000000,+0.000000,+0.000000,+0.000000 

points axis +1.000000,+0.000000,+0.000000 

towards ECI +0.661389,+0.692200,+0.288831 

which is R.A. +46.304 Decl. +16.788 

missing R.A. +48.135 Decl. +17.862 (ibex-sun) 

error is R.A. +1.831 Decl. +1.074 

for a total 2.052 deg 

ibex_rotate -o -u 0.661389,0.6922,0.288831 -w ibex-sun -t 2017/05:11:06:44:26 

Quaternion +0.000000,+0.000000,+0.000000,+0.000000 

points axis +1.000000,+0.000000,+0.000000 

towards ECI +0.661389,+0.692200,+0.288831 

which is R.A. +46.304 Decl. +16.788 

missing R.A. +48.201 Decl. +17.880 (ibex-sun) 

error is R.A. +1.897 Decl. +1.092 

for a total 2.114 deg 

ibex_rotate -o -u 0.661389,0.6922,0.288831 -w ibex-sun -t 2017/05:15:12:43:46 

Quaternion +0.000000,+0.000000,+0.000000,+0.000000 

points axis +1.000000,+0.000000,+0.000000 

towards ECI +0.661389,+0.692200,+0.288831 

which is R.A. +46.304 Decl. +16.788 

missing R.A. +52.292 Decl. +18.951 (ibex-sun) 

error is R.A. +5.988 Decl. +2.163 

for a total 6.095 deg 

The inertial precession maneuver at perigee leaves us pointing in safe directions at the time of the maneuver and at orbit 367 apogee: 

ibex_rotate -o -u 0.603139,0.735581,0.308453 -w ibex-sun -t 2017/05:15:14:54:34 

Quaternion +0.000000,+0.000000,+0.000000,+0.000000 

points axis +1.000000,+0.000000,+0.000000 

towards ECI +0.603139,+0.735581,+0.308453 

which is R.A. +50.650 Decl. +17.966 

missing R.A. +52.374 Decl. +18.970 (ibex-sun) 

error is R.A. +1.724 Decl. +1.004 

for a total 1.919 deg 

ibex_rotate -o -u 0.603139,0.735581,0.308453 -w ibex-sun -t 2017-05-20T10:42:41.819Z 

Quaternion +0.000000,+0.000000,+0.000000,+0.000000 

points axis +1.000000,+0.000000,+0.000000 

towards ECI +0.603139,+0.735581,+0.308453 

which is R.A. +50.650 Decl. +17.966 

missing R.A. +57.263 Decl. +20.009 (ibex-sun) 

error is R.A. +6.613 Decl. +2.043 

for a total 6.578 deg 

No Lo O-mode. 

There is no overlap with orbit 365 commands by manual inspection or by checking at 

http://ibex.unh.edu/cgi-bin/ats.cgi . 

Command Approval Checklist is attached. 

Ken 

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

From: "Timothy Perry" <Timothy.Perry at OrbitalATK.com> 
To: "David Heirtzler" <dfh at cisunix.unh.edu>, "IBEX-FDG" <IBEX.fdg at applieddefense.com>, "IBEXOPS" <IBEXOPS at gmail.com>, "ISOC at New Hampshire" <isocops at lists.sr.unh.edu>, "Ken Fairchild" <fair-play at comcast.net>, "Robert Lockwood" <Robert.Lockwood at OrbitalATK.com>, "Nigel Angold" <nigel.angold at nasa.gov>, "Paul Janzen" <paul.janzen at umontana.edu>, "Timothy Perry" <Timothy.Perry at OrbitalATK.com>, "Michelle Reno" <mreno at swri.edu>, "Ryan Tyler" <Ryan.Tyler at OrbitalATK.com>, "Sheral Wesley" <Sheral.Wesley at OrbitalATK.com> 
Sent: Monday, April 24, 2017 12:28:42 PM 
Subject: IBEX Orbit #366 ATS ( 7 - 16 May ) 

All, 

Attached are the planning products for Orbit #366. Please respond to this email thread with your comments and approvals. 

Approvals are required before COB on April 26. 

Note the following: 

1. No Battery Balancing 

2. IBEX Hi Gain Test 

a. # Start TIME=2017/05:05:13:00:00 

b. # End TIME=2017/05:05:17:15:41 

    1. Command Load Constraint Violation Report 

# Input files: 1 

# IBEX_2017_127_o0366a_v001.scr 

========================== 

HARD CONSTRAINT VIOLATIONS 

========================== 

NO VIOLATIONS. 

========================== 

SOFT CONSTRAINT VIOLATIONS 

========================== 

IBX-CLC-016: No command to enable spin pulse protection was found after 

transition to science mode at 2017/05/07 14:45:34 UTC 

IBX-CLC-016: No command to enable spin pulse protection was found after 

transition to science mode at 2017/05/11 06:14:26 UTC 

============== 

OTHER MESSAGES 

============== 

NO MESSAGES. 

Timothy E. Perry 

CRS, IBEX & OCO-2 

Mission Operations 

Tim.perry at orbitalatk.com 

Office (703) 406-5976 

Cell (301) 606-1430 

Corp Cell (571) 447-8977 

Notice: This e-mail is intended solely for use of the individual or entity to which it is addressed and may contain information that is proprietary, privileged and/or exempt from disclosure under applicable law. If the reader is not the intended recipient or agent responsible for delivering the message to the intended recipient, you are hereby notified that any dissemination, distribution or copying of this communication is strictly prohibited. This communication may also contain data subject to U.S. export laws. If so, data subject to the International Traffic in Arms Regulation cannot be disseminated, distributed, transferred, or copied, whether incorporated or in its original form, to foreign nationals residing in the U.S. or abroad, absent the express prior approval of the U.S. Department of State. Data subject to the Export Administration Act may not be disseminated, distributed, transferred or copied contrary to U. S. Department of Commerce regulations. If you have received this communication in error, please notify the sender by reply e-mail and destroy the e-mail message and any physical copies made of the communication. 
Thank you. 
********************* 

-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://lists.sr.unh.edu/pipermail/isocops/attachments/20170425/81590cb3/attachment-0001.html>
-------------- next part --------------
A non-text attachment was scrubbed...
Name: image001.gif
Type: image/gif
Size: 530 bytes
Desc: image001.gif
URL: <http://lists.sr.unh.edu/pipermail/isocops/attachments/20170425/81590cb3/image001-0001.gif>
-------------- next part --------------
A non-text attachment was scrubbed...
Name: image002.jpg
Type: image/jpeg
Size: 2392 bytes
Desc: image002.jpg
URL: <http://lists.sr.unh.edu/pipermail/isocops/attachments/20170425/81590cb3/image002-0001.jpg>
-------------- next part --------------
A non-text attachment was scrubbed...
Name: IBEX-Command-Approval-Checklist-Rev16b-o0366_KWF.doc
Type: application/msword
Size: 121344 bytes
Desc: not available
URL: <http://lists.sr.unh.edu/pipermail/isocops/attachments/20170425/81590cb3/IBEX-Command-Approval-Checklist-Rev16b-o0366_KWF-0001.doc>