| Date: | 2006-01-18 00:34:00 | |
| Sender: | Frank Lemoine <flemoine@bowie.gsfc.nasa.gov> | |
| Subject: | [SLR-Mail] No. 1432: GFO-1 spacecraft status on 17/01/2006 | |
| Author: | Frank Lemoine | |
| Content: | ******************************************************************************** SLR Electronic Mail 2006-01-18 00:34:00 UTC Message No. 1432 ******************************************************************************** Author: Frank Lemoine Subject: GFO-1 spacecraft status on 17/01/2006 Subject: GFO-1 spacecraft status on 17/01/2006 Subject: GFO-1 spacecraft status on 17/01/2006 Dear Colleagues, We have been informed that on Saturday January 14, 2006 between 04:00 and 07:00 UT, the GFO spacecraft experienced an anomaly and entered an automated tumble. The spacecraft has since been returned to nominal attitude and payload operations are slowly being resumed. The cause of the anomaly is under investigation. We find from our analysis of the Doppler data that the pre-anomaly and post-anomaly orbits are incompatible, indicating possibly some thruster firings during the anomaly. We will today (August 17, 2005, ~22:30 UT) shortly send out a predict based solely on the post-anomaly Doppler data. We apologize for any inconvenience this anomaly has caused to the tracking stations. Sinerely Frank Lemoine Code 697, Space Geodesy Laboratory NASA Goddard Space Flight Center From: flemoine@bowie.gsfc.nasa.gov ******************************************************************************** |