Voyager Mission Operations Status
Report # 2011-05-06,
Week Ending May 6, 2011
Command Transmission &
Verification Operations
Voyager 1 command operations consisted of the uplink of a Command Loss Timer Reset on 05/05 [DOY 125/0830z]. The spacecraft received the command.
Voyager 2 command operations consisted of the uplink of seven bracketed Command Loss Timer Resets sent on five-minute centers using 1.0 Hz steps on 05/04 [DOY 124/1337z]. The spacecraft received two of the seven commands sent.
Sequence Generation Operations
Complete
sequence development of CCSL B152.
Data Return Operations
Voyager
1 Data Processing and Operations:
There were 72.2 hours of DSN scheduled support for Voyager 1 of which 23.5 hours were large aperture coverage. There were no real-time or schedule support changes made during the period.
There was one significant outage of 2.8 hours on 05/01 [DOY 121] due to rain at DSS-65 [DR M106309].
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 May 6. The EDR backlog is 2
day.
Voyager
2 Data Processing and Operations:
There were 49.9 hours of DSN scheduled support for Voyager 2 of which 8.8 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. Activities included a LECP roll maneuver on
5/1 DOY (122) and 5/2 (DOY 123), an ASCAL on 5/3 (DOY 123), a LECP roll
maneuver on 5/5 (DOY 125), and a MAGROL on 5/6 (DOY 126).
Voyager
2 performance was nominal during this report period. Activity included a PMPCAL on 5/3 (DOY 123).
PROPELLANT/POWER CONSUMABLES
STATUS AS OF THIS REPORT
|
Spacecraft |
Consumption One Week (Gm) |
Propellant Remaining (Kg) |
Output (Watts) |
Margin (Watts) |
|
1 |
169.75* |
25.14 |
269.7 |
10 |
|
2 |
4.90 |
27.35 |
270.9 |
26 |
*LECP
Obs & ASCAL
RANGE, VELOCITY AND ROUND TRIP
LIGHT TIME AS OF THIS REPORT
|
|
Voyager 1 |
Voyager 2 |
|
Distance
from the Sun (Km) |
17,500,000,000 |
14,252,000,000 |
|
Distance
from the Sun (Mi) |
10,874,000,000 |
8,856,000,000 |
|
Distance
from the Earth (Km) |
17,393,000,000 |
14,199,000,000 |
|
Distance
from the Earth (Mi) |
10,807,000,000 |
8,823,000,000 |
|
Total
Distance Traveled Since Launch (Km) |
22,945,000,000 |
21,963,000,000 |
|
Total
Distance Traveled Since Launch (Mi) |
14,257,000,000 |
13,647,000,000 |
|
Velocity
Relative to Sun (Km/sec) |
17.056 |
15.462 |
|
Velocity
Relative to Sun (Mi/hr) |
38,153 |
34,587 |
|
Velocity
Relative to Earth (Km/sec) |
25.834 |
23.100 |
|
Velocity
Relative to Earth (Mi/hr) |
57,788 |
51,672 |
|
Round
Trip Light Time (hh:mm:ss) |
32:12:56 |
26:18:30 |