Subject: Product Outage/Anomaly: Update #2: Jason-2 is in Safe
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*Update #2: *At approximately 0550Z, the Jason-2 Poseidon instrument
was
restarted, followed by the AMR. OGDR production has restarted on cycle
509 / pass 162, after a data outage of approximately 695 hours.
Outside
the gyro temperature problem, Jason 2 is fully operational. Studies are
continuing regarding this anomaly : if no workaround has been found and
tested in the coming weeks, predictions show that another safe
hold mode
is likely to occur around the 10th of November. All teams keep on
working hard to improve Jason 2 availability.*
**
Update #1: *Jason-2 Safe Hold recovery operations are expected October
11 - 13. A station-keeping maneuver is scheduled on Friday October 13
at 02:01:47 Z with an expected change of +18.48 m in the semi-major
axis. All instruments should then be restarted during a pass at 0541Z.
Data production should restart right after the pass.
*Topic: * Jason-2 Satellite is in Safe Hold*
**Date/Time Issued:* October 13, 2017 1534Z
*Product(s) or Data Impacted:* Jason-2 OGDRs distributed via DDS/PDA
and
Class users.
*Date/Time of Initial Impact:* September 14, 2017 0713Z
*Date/Time of Expected End:* October 13, 2017 0559Z
*
Length of Event:* 695 hrs 47 mins 9 secs
*Details/Specifics of Change: *After 2 months of smooth operation
on the
Long Repeat Orbit (LRO) the Jason-2 spacecraft entered safe hold mode
today (Thursday, September 14th) at 07:13:04 UTC, immediately
interrupting its measurements. The OPS team at NOAA and CNES applied
immediately necessary procedures and the satellite is currently in a
safe and stable Sun-pointing configuration. First investigations show
that Gyrometer 1 was blocked, triggering the reconfiguration to
SHM. The
gyros temperature increase during the period where the Beta angle is
high remains a concern. All other equipment is OK at the time of the
reconfiguration.
The period concerning the high temperature of the gyro will continue
until October 3, so SHM recovery (NOMINAL MODE) is not expected before
this date and likely not before the next YAW Fix period, which starts
October 12. The 4 partners operational teams are working closely to
support current and future operations. The mission will resume as soon
as technically possible.*
Contact Information for Further Information: *ESPCOperations@noaa.gov
at
301-817-3880.
*Web Site(s) for applicable information:*N/A **
**This message was sent from ESPC.Notification@noaa.gov. You have been
sent this and other notifications because you have opted in to receive
it. If for any reason, you wish to unsubscribe, please contact
ESPC Help
Desk at ESPCOperations@noaa.gov or (301) 817-3880. Please note: it may
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Jason-2 NOTIFICATION
Update #2: At approximately 0550Z, the Jason-2 Poseidon
instrument was restarted, followed by the AMR. OGDR production has
restarted on cycle 509 / pass 162, after a data outage of
approximately 695 hours.
Jason 2 is fully operational. Studies are continuing regarding this
anomaly : if no workaround has been found and tested in the coming
weeks, predictions show that another safe hold mode is likely to
occur around the 10th of November. All teams keep on working
hard to
improve Jason 2 availability.
Update #1: Jason-2 Safe Hold recovery operations are expected
October 11 - 13.
October 13 at 02:01:47 Z with an expected change of +18.48 m in the
semi-major axis. All instruments should then be restarted during a
pass at 0541Z. Data production should restart right after the
pass.
Topic:
Date/Time Issued:
Product(s) or Data Impacted: Jason-2 OGDRs distributed via DDS/PDA and Class
users.
Date/Time of Initial Impact:
Date/Time of Expected End: October 13, 2017 0559Z
Length of Event:
Details/Specifics of Change:
operation on the Long Repeat Orbit (LRO) the Jason-2 spacecraft
entered safe hold mode today (Thursday, September 14th) at 07:13:04
UTC, immediately interrupting its measurements. The OPS team
at NOAA
and CNES applied immediately necessary procedures and the satellite
is currently in a safe and stable Sun-pointing configuration. First
investigations show that Gyrometer 1 was blocked, triggering the
reconfiguration to SHM. The gyros temperature increase during the
period where the Beta angle is high remains a concern.
equipment is OK at the time of the reconfiguration.
The period concerning the high temperature of the gyro will
continue
until October 3, so SHM recovery (NOMINAL MODE) is not expected
before this date and likely not before the next YAW Fix period,
which starts October 12. The 4 partners operational teams are
working closely to support current and future operations. The
mission will resume as soon as technically possible.
Contact Information for Further Information: ESPCOperations@noaa.gov
at 301-817-3880.
Web Site(s) for applicable
information: N/A
This message was
sent from ESPC.Notification@noaa.gov.
You have been sent this and other notifications because you have
opted in to receive it. If for any reason, you wish to
unsubscribe, please contact ESPC Help Desk at ESPCOperations@noaa.gov
or (301) 817-3880. Please note: it may take up to two business
days to process your unsubscribe request.
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