GalSatsMasterlog
From Groupwiki
This table documents the history of attempted measurements of the spin states of Europa and Ganymede.
Entries in green indicate successful runs.
Entries in red indicate that our time request was denied.
Entries in dark red indicate hardware, software, or human failures.
Entries in orange have uncertain status.
| Number | Date | Status | Summary |
|---|---|---|---|
| Europa/Ganymede | 2022 SEP | No data | Geometry does not allow observations in 2022. RTT at C/A ~ 3944. |
| Number | Date | Status | Summary |
|---|---|---|---|
| Europa/Ganymede | 2021 AUG | No data | Geometry does not allow observations in 2021. RTT at C/A ~ 4006. |
| Number | Date | Status | Summary |
|---|---|---|---|
| 01 Europa | 2020 JUL 07 | No data | Failure of Goldstone klystrons. RTT = 4139.7. |
| 06 Ganymede | 2020 JUL 12 | No data | Failure of Goldstone klystrons. RTT = 4136.2. |
| 07 Ganymede | 2020 JUL 15 | No data | Failure of Goldstone klystrons |
| 02 Europa | 2020 JUL 16 | No data | Failure of Goldstone klystrons |
| 03 Europa | 2020 JUL 18 | No data | Failure of Goldstone klystrons |
| 04 Europa | 2020 JUL 25 | No data | Failure of Goldstone klystrons |
| 08 Ganymede | 2020 JUL 30 | No data | Failure of Goldstone klystrons |
| 05 Europa | 2020 AUG 01 | No data | One klystron is back but Goldstone not ready. Track got dropped from DSN schedule. |
| 09 Ganymede | 2020 AUG 02 | No data | One klystron is back but Goldstone not ready. Track got dropped from DSN schedule. |
| 10 Ganymede | 2020 AUG 03 | No data | One klystron is back but Goldstone not ready. RTT = 4181.2. |
| Number | Date | Status | Summary |
|---|---|---|---|
| 01 Europa | 2019 JUN 05 | No data | Failure of Goldstone klystrons. RTT = 4282.1. |
| 02 Europa | 2019 JUN 07 | No data | Failure of Goldstone klystrons |
| 03 Europa | 2019 JUN 14 | No data | Failure of Goldstone klystrons |
| 04 Europa | 2019 JUN 21 | No data | Failure of Goldstone klystrons |
| 05 Europa | 2019 JUN 23 | No data | Failure of Goldstone klystrons |
| 06 Ganymede | 2019 JUN 10 | No data | Failure of Goldstone klystrons. RTT = 4278.5. |
| 07 Ganymede | 2019 JUN 13 | No data | Failure of Goldstone klystrons |
| 08 Ganymede | 2019 JUN 17 | No data | Failure of Goldstone klystrons |
| 09 Ganymede | 2019 JUN 18 | No data | Failure of Goldstone klystrons |
| 10 Ganymede | 2019 JUN 24 | No data | Failure of Goldstone klystrons. RTT = 4300.8. |
| Number | Date | Status | Summary |
|---|---|---|---|
| Europa/Ganymede | 2018 MAY | No data | SNR too low in 2018. RTT at C/A ~ 4390. |
| Number | Date | Status | Summary |
|---|---|---|---|
| Europa/Ganymede | 2017 APR | No data | SNR too low in 2017. RTT at C/A ~ 4448. |
| Number | Date | Status | Summary |
|---|---|---|---|
| Europa/Ganymede | 2016 MAR | No data | SNR too low in 2016. RTT at C/A ~ 4425. |
| Number | Date | Status | Summary |
|---|---|---|---|
| Europa/Ganymede | 2015 JAN | No data | SNR too low in 2015. RTT at C/A ~ 4338. |
| Number | Date | Status | Summary |
|---|---|---|---|
| 01 Ganymede | 2013 DEC 23 | Correlation detected | Correlation likely truncated |
| 02 Europa | 2013 DEC 30 | Correlation detected | RTT = 4206.3. |
| 03 Ganymede | 2014 JAN 05 | Correlation detected | RTT = 4198.2. |
| 04 Europa | 2014 JAN 06 | Correlation detected (SC only) | Correlation poorly defined in initial analysis |
| 05 Ganymede | 2014 JAN 07 | No echoes at GBT | Brake of prime focus boom is frozen (-7F). Unable to retract boom and observe at X-band. |
| 06 Europa | 2014 JAN 10 | Echoes detected | No obvious correlation. RTT = 4208.6. |
| 07 Ganymede | 2014 JAN 13 | No transmission from DSS-14 | DSS-14 skid pump #2 has failed and the azimuth brakes will not release. |
| 08 Europa | 2014 JAN 17 | Correlation detected (SC only) | Correlation poorly defined in initial analysis. RTT = 4227.4. |
| 09 Ganymede | 2014 FEB 02 | Poor echoes at Goldstone | Goldstone mirror misaligned |
| Number | Date | Status | Summary |
|---|---|---|---|
| 01 Ganymede | 2012 NOV 13 | no echoes detected | incorrect Doppler polynomial used - may be salvageable with lots of extra data processing |
| 02 Europa | 2012 NOV 16 | correlation detected. | RTT = 4094.8. |
| 03 Ganymede | 2012 NOV 17 | correlation detected | GBT Tsys 60 K (2.1 factor degradation) |
| 04 Europa | 2012 NOV 20 | echoes detected | |
| 05 Europa | 2012 NOV 27 | faint echoes detected | GBT Tsys 50 K (1.8 factor degradation) |
| 06 Europa | 2012 DEC 04 | echoes detected. | RTT = 4061.3. |
| 07 Ganymede | 2012 DEC 11 | correlation detected | GBT Tsys 48 K (1.7 factor degradation) |
| 08 Europa | 2012 DEC 15 | correlation detected | |
| 09 Europa | 2012 DEC 18 | correlation detected | |
| 10 Europa | 2012 DEC 22 | correlation detected. | RTT = 4128.1. |
| Number | Date | Status | Summary |
|---|---|---|---|
| 01 | 2011 SEP 24 | correlation detected | 45 minutes of data. RTT = 4126.3. |
| 02 | 2011 SEP 27 | correlation detected | 45 minutes of data. |
| 03 | 2011 SEP 29 | echoes detected | 68 minutes of data. Echoes weaker than on Sep 24. Rain and high Tsys at GBT. No correlation detected so far. Cooling pump #1 over-heated. |
| 04 | 2011 OCT 01 | correlation detected | 50 minutes of data. Correlation barely seen in OC data. Weakest among Sep 24, Sep 27, and Oct 1. |
| 05 | 2011 OCT 03 | correlation detected | 45 minutes of data. Weaker than Sep 24, Sep 27, and Oct 1. |
| 06 | 2011 OCT 04 | no data | Cooling pump #2 unable to function due to valve left closed by mistake. Cooling pump #1 not yet aligned. Unable to transmit. |
| 07 | 2011 OCT 06 | echoes detected | 34 minutes of data. No correlation detected so far. UCLA network outage - no access to data-taking instrument due to DSN firewall. |
| 08 | 2011 OCT 08 | no data | Transmitter problems. Unable to transmit. |
| 09 | 2011 OCT 10 | correlation detected | 26 minutes of data. Correlation seen in SC only. First attempt to get range (failed due to hardware problem - coders) |
| 10 | 2011 OCT 13 | correlation detected | 30 minutes of data. Second attempt to get range (failed due to radiation clearance problem). |
| 11 | 2011 OCT 15 | correlation detected | 30 minutes of data. Strongest SC correlation detected so far. Correlation seen in SC only. DSS-14 hit brakes twice during track. |
| 12 | 2011 OCT 17 | correlation detected | 30 minutes of data. Weakest SC correlation detected so far. Correlation seen in SC only. On-site observing at Goldstone. |
| 13 | 2011 OCT 19 | correlation detected | 30 minutes of data. Strong SC correlation - possibly widest so far. Correlation seen in SC only. |
| 14 | 2011 OCT 20 | correlation detected | 30 minutes of data. Second strongest SC correlation. |
| 15 Ganymede | 2011 OCT 22 | correlation detected | 30 minutes of data. Strong correlation in both polarizations. Excellent prospect for placing lower bound on obliquity. |
| 16 | 2011 OCT 24 | echoes detected | 30 minutes of data. No correlation detected so far. RTT = 3963.2. |
| 17 | 2011 OCT 26 | correlation detected | 30 minutes of data, interrupted by 4 peaking procedures to workaround stuck subreflector at GBT. Correlation seen in SC only. |
| 18 | 2011 OCT 29 | echoes detected | 11 minutes of data. Weak echoes. No correlation detected. |
| 19 | 2011 OCT 31 | correlation detected | 30 minutes of data. Weak correlation. Correlation seen in SC only. |
| 20 Ganymede | 2011 NOV 02 | correlation detected | 30 minutes of data. Correlation detected in both polarizations, but not as strong as Oct 22. |
| 21 | 2011 NOV 04 | correlation detected | 30 minutes of data. Weak correlation. Seen in SC only. |
| 22 | 2011 NOV 05 | correlation detected | 30 minutes of data. |
| 23 | 2011 NOV 07 | correlation detected | 12 minutes of data. |
| 24 | 2011 NOV 09 | echoes detected | 28.5 minutes of data. No correlation detected. GBT levels abnormal following 2005 YU55. Likely due to programmable attenuators in unknown state. |
| 25 | 2011 NOV 11 | echoes detected | 20 minutes of data. No correlation detected. |
| 26 Ganymede | 2011 NOV 14 | correlation detected | 30 minutes of data. Correlation seen in SC only. |
| 27 | 2011 NOV 16 | echoes detected | 30 minutes of data. No correlation detected in either SC or OC. |
| 28 | 2011 NOV 18 | echoes detected | 30 minutes of data. No correlation detected in either SC or OC. |
| 29 | 2011 NOV 21 | no data | Transmitter tripped just before correlation epoch |
| 30 | 2011 NOV 23 | echoes detected | 15 minutes of data. No correlation detected in either SC or OC. RTT = 4067.2. |
