Voyager Mission Operations Status Report # 2012-08-10,
Week Ending August 10, 2012
Command Transmission & Verification Operations
Voyager 1 command operations consisted of the
uplink of a Command Loss Timer Reset on 08/06 [DOY 219/2100z]. 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 08/07 [DOY 220/1527z]. The spacecraft received two
of the seven commands sent.
Sequence
Generation Operations
Data
Return Operations
Voyager 1 Data Processing and Operations:
There were 52.0 hours of DSN scheduled support
for Voyager 1 of which 47.0 hours were large aperture coverage. Two schedule
changes were made both adding DSS-43 support released from Voyager 2. The first change on 08/06 [DOY 219] added 2.2
hours of DSS-43 support and the second change two days later, on 08/08 [DOY 221]
added 2.1 hours of DSS-43 support. The
total actual support was 56.3 hours of which 51.3 hours were large aperture
coverage. There were no 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 August 10. The EDR backlog
is 1 days.
Voyager 2 Data Processing and Operations:
There were 36.1 hours of DSN scheduled support
for Voyager 2 of which 27.2 hours were large aperture coverage. Two schedule
changes were made both releasing DSS-43 support to Voyager 1. The first change on 08/06 [DOY 219] released 2.9
hours of DSS-43 support and the second change two days later, on 08/08 [DOY 221]
released 2.8 hours of DSS-43 support.
The total actual support was 30.4 hours of which 21.5 hours were large
aperture coverage. There were no
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.
PROPELLANT/POWER
CONSUMABLES STATUS AS OF THIS REPORT
|
Spacecraft |
Consumption One
Week (Gm) |
Propellant Remaining
(Kg) |
Output (Watts) |
Margin (Watts) |
|
1 |
56.96* |
22.36 |
264.5 |
11 |
|
2 |
4.66 |
26.71 |
265.6 |
31 |
*LECP
Observation 2012/216
RANGE,
VELOCITY AND ROUND TRIP LIGHT TIME AS OF THIS REPORT
|
|
Voyager
1 |
Voyager
2 |
|
Distance from the Sun (Km) |
18,178,000,000 |
14,850,000,000 |
|
Distance from the Sun (Mi) |
11,295,000,000 |
9,227,000,000 |
|
Distance from the Earth (Km) |
18,121,000,000 |
14,740,000,000 |
|
Distance from the Earth (Mi) |
11,260,000,000 |
9,159,000,000 |
|
Total Distance Traveled Since Launch (Km) |
24,286,000,000 |
23,246,000,000 |
|
Total Distance Traveled Since Launch (Mi) |
15,091,000,000 |
14,444,000,000 |
|
Velocity Relative to Sun (Km/sec) |
17.045 |
15.439 |
|
Velocity Relative to Sun (Mi/hr) |
38,127 |
34,536 |
|
Velocity Relative to Earth (Km/sec) |
42,850 |
36.728 |
|
Velocity Relative to Earth (Mi/hr) |
95,851 |
82,159 |
|
Round Trip Light Time (hh:mm:ss) |
33:34:02 |
27:18:52 |