Kayton,

    Thanks for the heads up for the pass on October 17^th. Unfortunately the commands are already onboard.  I will note that there might be issues with the pass and if needed schedule up a follow on contact. Apogee contacts are always interesting because of the distance.

     Thanks

         Tim

Timothy E.Perry

CRS IBEX OCO-2

Mission Operations

timothy.perry@ngc.com

Office (703) 406-5976

Cell (301) 606-1430

From: IBEX FDG [mailto:ibex@applieddefense.info]
Sent: Thursday, October 15, 2020 11:59 AM
To: Perry, Timothy E [US] (IS) <Timothy.Perry@ngc.com>
Cc: IBEXOPS <IBEXOPS@gmail.com>; ISOC at New Hampshire <isocops@lists.sr.unh.edu>; USN Scheduler <Scheduler@uspacenet.com>; carol.weaver@unh.edu; Ken Fairchild (kwfairchild@gmail.com) <kwfairchild@gmail.com>; Nigel Angold <angoldconsulting@earthlink.net>; nangold@princeton.edu
Subject: EXT :Orbit 504 Apogee Contact - Antenna Null

Hi Tim, 

We have added an additional step of rechecking the next orbit's contacts for IBEX to make sure any recent data hasn't changed our approvals. After rechecking the next apogee contact scheduled for October 17th 22:30 on USHI01 (with the updates from the most recent orbit's tracking data/processing), it appears that it is right on the edge of the antenna null.  The antenna null is cleared starting at 1:40 on 18 Oct 2020 for the view period in question, which lasts from 17 Oct 2020 21:56:59.499 until 18 Oct 2020 07:47:21 on USHI01. If possible, you may want to move the contact to after 1:40 on the 18th. 

Thanks,

Kayton Lane

IBEX Flight Dynamics Group