Voyager Mission Operations Status
Report # 2009-07-31, Week Ending July 31, 2009
Command Transmission &
Verification Operations
Voyager 1 command operations consisted of the uplink of a Command Loss Timer Reset on 07/30 [DOY 211/2130z]. The spacecraft received the command.
Voyager 2 command operations consisted of the uplink of two HPOINT PTR DMROs and a Command Loss Timer Reset on 07/26 [DOY 207/1143z]. The spacecraft received all commands sent and both DMROs were verified.
Sequence Generation Operations
Continue
sequence development of CCSL B145.
Data Return Operations
Voyager
1 Data Processing and Operations:
There were 94.3 hours of DSN scheduled support for Voyager 1 of which 47.5 hours were large aperture coverage. There was one schedule support change on 07/25 [DOY 206] when 0.8 hours of DSS-63 support was released. The total actual support was 93.5 hours of which 46.7 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 July 31. The EDR backlog is
2 day.
Voyager
2 Data Processing and Operations:
There were 70.5 hours of DSN scheduled support for Voyager 2 of which 35.2 hours were large aperture coverage. There were no real-time or schedule support changes made during the period.
There was one significant outage of 1.0 hours on 07/30 [DOY 211] due to a Comm. problem at ERNS1 [DR N105435].
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 turning on the AB gyros on
7/31 [DOY 213].
Voyager
2 performance was nominal during this report period. Activity included a PMPCAL on 7/28 [DOY 209].
PROPELLANT/POWER CONSUMABLES
STATUS AS OF THIS REPORT
|
Spacecraft |
Consumption One Week (Gm) |
Propellant Remaining (Kg) |
Output (Watts) |
Margin (Watts) |
|
1 |
4.85 |
26.61 |
277.0 |
33 |
|
2 |
5.10 |
28.26 |
278.3 |
32 |
RANGE, VELOCITY AND ROUND TRIP
LIGHT TIME AS OF 7/31/2009
|
|
Voyager 1 |
Voyager 2 |
|
Distance
from the Sun (Km) |
16,555,000,000 |
13,420,000,000 |
|
Distance
from the Sun (Mi) |
10,287,000,000 |
8,339,000,000 |
|
Distance
from the Earth (Km) |
16,481,000,000 |
13,300,000,000 |
|
Distance
from the Earth (Mi) |
10,241,000,000 |
8,264,000,000 |
|
Total
Distance Traveled Since Launch (Km) |
21,111,000,000 |
20,103,000,000 |
|
Total
Distance Traveled Since Launch (Mi) |
13,118,000,000 |
12,491,000,000 |
|
Velocity
Relative to Sun (Km/sec) |
17.082 |
15.504 |
|
Velocity
Relative to Sun (Mi/hr) |
38,210 |
34,681 |
|
Velocity
Relative to Earth (Km/sec) |
41.799 |
35.331 |
|
Velocity
Relative to Earth (Mi/hr) |
93,502 |
79,032 |
|
Round
Trip Light Time (hh:mm:ss) |
30:31:48 |
24:38:44 |