Voyager Mission Operations Status Report # 2009-03-20, Week Ending March 20, 2009
Command Transmission & Verification Operations
Voyager 1 command operations consisted of the uplink of a Command Loss Timer Reset on 03/17 [DOY 076/0100z]. The spacecraft received the command.
There were no command operations in support of Voyager 2 during the period due to the extended downtime of DSS-43.
Sequence Generation Operations
Continue sequence development of CCSL A071.
Data Return Operations
Voyager 1 Data Processing and Operations:
There were70.0 hours of DSN scheduled support for Voyager 1 of which 26.3 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. One frame of GS-4 data was recorded this week. A second frame of GS-4 data was recorded on March 14. The EDR backlog is 2 days.
Voyager 2 Data Processing and Operations:
There were 42.3 hours of DSN scheduled support for Voyager 2 of which 0 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.
Voyager 2 performance was nominal during this report period. Activities included a switch to X-Band high power and an ASCAL on 3/16 [DOY 075] and a MAGROL followed by gyros OFF and a switch back to X-Band low power on 3/19 [DOY 078/079].
PROPELLANT/POWER CONSUMABLES STATUS AS OF THIS REPORT
|
Spacecraft |
Consumption One Week (Gm) |
Propellant Remaining (Kg) |
Output (Watts) |
Margin (Watts) |
|
1 |
4.49 |
26.74 |
278.4 |
30 |
|
2 |
7.23* |
28.49 |
279.9 |
39 |
*ASCAL 09-075/21:05
RANGE, VELOCITY AND ROUND TRIP LIGHT TIME AS OF 3/20/2009
|
|
Voyager 1 |
Voyager 2 |
|
Distance from the Sun (Km) |
16,360,000,000 |
13,249,000,000 |
|
Distance from the Sun (Mi) |
10,165,000,000 |
8,232,000,000 |
|
Distance from the Earth (Km) |
16,328,000,000 |
13,292,000,000 |
|
Distance from the Earth (Mi) |
10,146,000,000 |
8,259,000,000 |
|
Total Distance Traveled Since Launch (Km) |
20,766,000,000 |
19,797,000,000 |
|
Total Distance Traveled Since Launch (Mi) |
12,903,000,000 |
12,301,000,000 |
|
Velocity Relative to Sun (Km/sec) |
17.089 |
15.514 |
|
Velocity Relative to Sun (Mi/hr) |
38,226 |
34,703 |
|
Velocity Relative to Earth (Km/sec) |
18.994 |
23.931 |
|
Velocity Relative to Earth (Mi/hr) |
42,487 |
53,531 |
|
Round Trip Light Time (hh:mm:ss) |
30:14:34 |
24:37:38 |