Voyager Mission Operations Status
Report # 2012-05-25, Week Ending May 25, 2012
Command Transmission &
Verification Operations
Voyager
1 command operations consisted of the uplink of a Command Loss Timer Reset on 05/24
[DOY 145/1300z]. 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 0.5 Hz steps on 05/23 [DOY 144/1527z].
The station, DSS-43, aborted transmission of the fifth and sixth commands [DR
C108713]. The spacecraft received two of
the five commands sent.
Sequence Generation Operations
Data Return Operations
Voyager
1 Data Processing and Operations:
There
were 42.7 hours of DSN scheduled support for Voyager 1 of which 25.3 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 May 25. The EDR backlog is 2 days.
Voyager
2 Data Processing and Operations:
There were 54.7
hours of DSN scheduled support for Voyager 2 of which 22.0 hours were large
aperture coverage. One schedule change made on 05/23 [DOY 144] added 6.0 hours
of DSS-45 support. The total actual
support for the period was 60.7 hours of which 22.0 hours were large aperture
coverage. There were no significant outages.
Science
instrument performance was nominal for all activities during this period. The EDR backlog is 1 day.
Flight System Performance
Voyager
1 performance was nominal during this report period. Activity included a PMPCAL on 5/23 (DOY 144).
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 |
4.98 |
22.88 |
265.4 |
28 |
|
2 |
6.10 |
26.82 |
266.5 |
37 |
RANGE, VELOCITY AND ROUND TRIP LIGHT
TIME AS OF THIS REPORT
|
|
Voyager 1 |
Voyager 2 |
|
Distance
from the Sun (Km) |
18,065,000,000 |
14,750,000,000 |
|
Distance
from the Sun (Mi) |
11,225,000,000 |
9,165,000,000 |
|
Distance
from the Earth (Km) |
17,943,000,000 |
14,663,000,000 |
|
Distance
from the Earth (Mi) |
11,149,000,000 |
9,111,000,000 |
|
Total
Distance Traveled Since Launch (Km) |
24,038,000,000 |
23,040,000,000 |
|
Total
Distance Traveled Since Launch (Mi) |
14,937,000,000 |
14,317,000,000 |
|
Velocity
Relative to Sun (Km/sec) |
17.046 |
15.443 |
|
Velocity
Relative to Sun (Mi/hr) |
38,131 |
34,544 |
|
Velocity
Relative to Earth (Km/sec) |
30.067 |
25.095 |
|
Velocity
Relative to Earth (Mi/hr) |
67,258 |
56,134 |
|
Round
Trip Light Time (hh:mm:ss) |
33:14:06 |
27:10.08 |