****************************************************************************** dorismail 18-Jul-2018 17:33:01 Message No 1126 ****************************************************************************** Author: Soudarin Laurent Subject: Jason-2 Safe Hold Mode De : Marechal Christophe Envoy=E9 : mercredi 18 juillet 2018 18:03 =C0 : ostst@jpl.nasa.gov Cc : Aviso CRM Objet : [Jason-2] Safe Hold Mode Dear OSTST Members, The Jason-2 spacecraft entered safe mode today (Wednesday, July 18th) at 09= :00UTC, immediately interrupting its measurements. The satellite is currently in a safe and stable Sun-pointing configuration.= The analysis of the telemetry shows that the safe hold mode is consecutive= to a gyro #1 disjunction. Those anomalies are now known and, as decided du= ring last JSG, the reconfiguration of the satellite on gyro#2 started immed= iately. Recovery operations will keep on during the following days, and Jas= on-2 mission is expected to restart nominally next week, hopefully on Wedne= sday, July 25th. The exact time of instruments restart will be communicated= later. As indicated earlier this week, Jason-2 maneuvers have been performed in or= der to place Jason-2 on an "interleaved LRO" orbit, so that more precise re= sults are available for geodetic purpose. Fortunately, the reconfiguration = to safe hold mode has been triggered after the last maneuver, which means J= ason-2 should be ready to provide measurements on cycle 600 (new cycle numb= ering for the i-LRO measurements) right after restart. Very best regards. Christophe Marechal, CNES Jason 2 project manager on behalf of Jason-2 proj= ect managers from NOAA, EUMETSAT and JPL.