Voyager Mission Operations Status
Report # 2009-07-24, Week Ending July 24, 2009
Command Transmission &
Verification Operations
Voyager 1 command operations consisted of the uplink of a Command Loss Timer Reset on 07/21 [DOY 202/2330z]. The spacecraft received the command.
There were no command operations in support of Voyager 2 during the period.
Sequence Generation Operations
Continue
sequence development of CCSL B145.
Data Return Operations
Voyager
1 Data Processing and Operations:
There were 77.1 hours of DSN scheduled support for Voyager 1 of which 29.5 hours were large aperture coverage. Two schedule changes were made both releasing DSS-63 station time. The first change on 07/22 [DOY 203] released 1.8 hours and the second change on 07/24 [DOY 205] released 1.7 hours. The total actual support was 73.6 hours of which 26.0 hours were large aperture coverage.
There was one significant outage of 0.5 hours on 07/20 [DOY 201] due to high winds at DSS-15 [DR G109564].
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 24. The EDR backlog is
2 day.
Voyager
2 Data Processing and Operations:
There were 56.0 hours of DSN scheduled support for Voyager 2 of which 16.2 hours were large aperture coverage. There was one schedule support change on 07/23 [DOY 204] when 2.8 hours of DSS-43 support was added in place of 0.3 hours of DSS-34. The total actual support was 58.5 hours of which 19.0 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. Activity included a PMOCAL on 7/21 [DOY 203].
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 |
4.10 |
26.61 |
277.1 |
33 |
|
2 |
5.18 |
28.26 |
278.4 |
33 |
RANGE, VELOCITY AND ROUND TRIP
LIGHT TIME AS OF 7/24/2009
|
|
Voyager 1 |
Voyager 2 |
|
Distance
from the Sun (Km) |
16,545,000,000 |
13,411,000,000 |
|
Distance
from the Sun (Mi) |
10,280,000,000 |
8,333,000,000 |
|
Distance
from the Earth (Km) |
16,460,000,000 |
13,287,000,000 |
|
Distance
from the Earth (Mi) |
10,228,000,000 |
8,256,000,000 |
|
Total
Distance Traveled Since Launch (Km) |
21,086,000,000 |
20,082,000,000 |
|
Total
Distance Traveled Since Launch (Mi) |
13,102,000,000 |
12,478,000,000 |
|
Velocity
Relative to Sun (Km/sec) |
17.082 |
15.505 |
|
Velocity
Relative to Sun (Mi/hr) |
38,211 |
34,682 |
|
Velocity
Relative to Earth (Km/sec) |
40.944 |
34.300 |
|
Velocity
Relative to Earth (Mi/hr) |
91,589 |
76,727 |
|
Round
Trip Light Time (hh:mm:ss) |
30:29:24 |
24:37:14 |