Voyager Mission Operations Status
Report # 2011-08-12,
Week Ending August 12, 2011
Command Transmission &
Verification Operations
Voyager 1 command operations consisted of the uplink of a Command Loss Timer Reset on 08/09 [DOY 221/2240z]. The spacecraft received the command.
Voyager 2 command operations consisted of the uplink of CCSL B153 and a Command Loss Timer Reset on 08/09 [DOY 221/0413z]. The commands were not radiated due to a Red Transmitter at DSS-43. The commands were rescheduled for transmission on 08/12 [DOY 224/0713] and were successfully radiated. The spacecraft received all commands sent and the CCSL was verified
Sequence Generation Operations
No
activity.
Data Return Operations
Voyager
1 Data Processing and Operations:
There were 41.2 hours of DSN scheduled support for Voyager 1 of which 40.9 hours were large aperture coverage. There were no real-time or schedule support changes made or significant outages during the period.
Science instrument
performance was nominal for all activities during this period. One frame of GS-4 data was recorded this
week. Fourteen frames of data were
recovered from a playback of GS-4 data on August 9. Seventeen frames of data were recovered from
another playback of GS-4 data on August 10.
The EDR backlog is 2 days.
Voyager
2 Data Processing and Operations:
There were 39.0 hours of DSN scheduled support for Voyager 2 of which 24.3 hours were large aperture coverage. There were no real-time or schedule support changes made or significant outages during the period.
Science instrument performance was nominal for all
activities during this period. The EDR
backlog is 2 days.
Flight System Performance
Voyager
1 performance was nominal during this report period. Activity included DTR Playbacks on 8/9 (DOY
222) and 8/10 (DOY 223) followed by X-Band low power.
Voyager
2 performance was nominal during this report period.
PROPELLANT/POWER CONSUMABLES
STATUS AS OF THIS REPORT
|
Spacecraft |
Consumption One Week (Gm) |
Propellant Remaining (Kg) |
Output (Watts) |
Margin (Watts) |
|
1 |
159.01* |
24.46 |
268.5 |
22 |
|
2 |
4.57 |
27.24 |
269.9 |
24 |
*
1 MAGROL and 2 LECP Maneuvers
RANGE, VELOCITY AND ROUND TRIP
LIGHT TIME AS OF THIS REPORT
|
|
Voyager 1 |
Voyager 2 |
|
Distance
from the Sun (Km) |
17,644,000,000 |
14,379,000,000 |
|
Distance
from the Sun (Mi) |
10,963,000,000 |
8,935,000,000 |
|
Distance
from the Earth (Km) |
17,590,000,000 |
14,270,000,000 |
|
Distance
from the Earth (Mi) |
10,930,000,000 |
8,867,000,000 |
|
Total
Distance Traveled Since Launch (Km) |
23,245,000,000 |
22,213,000,000 |
|
Total
Distance Traveled Since Launch (Mi) |
14,444,000,000 |
13,802,000,000 |
|
Velocity
Relative to Sun (Km/sec) |
17.053 |
15.457 |
|
Velocity
Relative to Sun (Mi/hr) |
38,146 |
34,575 |
|
Velocity
Relative to Earth (Km/sec) |
42.959 |
36.894 |
|
Velocity
Relative to Earth (Mi/hr) |
96,097 |
82,528 |
|
Round
Trip Light Time (hh:mm:ss) |
32:35:00 |
26:26:36 |