Voyager Mission Operations Status
Report # 2009-02-20, Week Ending February 20, 2009
Command Transmission &
Verification Operations
There were no command operations in support of Voyager 1 during the period.
There were no command operations in support of Voyager 2 during the period due to the extended downtime of DSS-43.
Sequence Generation Operations
No
sequence development activities during this report period.
Data Return Operations
Voyager
1 Data Processing and Operations:
There were 47.8 hours of DSN scheduled support for Voyager 1 of which 33.5 hours were large aperture coverage. One support change was made in real-time on 02/18 [DOY 049] when DSS-24 supported 0.5 hours in place of 3.0 hours of DSS-15 down due to antenna problems [DR G109264]. The total actual support was 45.3 hours of which 33.5 hours were large aperture coverage.
There was one significant outage of 2.3 hours on 02/18 [DOY 049] due antenna problems at DSS-15 [DR G109264].
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 February13. The EDR backlog
is 2 days.
Voyager
2 Data Processing and Operations:
There were 32.6 hours of
DSN scheduled support for Voyager 2 of which 0 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.
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 |
4.76 |
26.81 |
278.8 |
33 |
|
2 |
4.90 |
28.51 |
283.3 |
35 |
RANGE, VELOCITY AND ROUND TRIP
LIGHT TIME AS OF 2/20/2009
|
|
Voyager 1 |
Voyager 2 |
|
Distance
from the Sun (Km) |
16,319,000,000 |
13,213,000,000 |
|
Distance
from the Sun (Mi) |
10,140,000,000 |
8,210,000,000 |
|
Distance
from the Earth (Km) |
16,346,000,000 |
13,305,000,000 |
|
Distance
from the Earth (Mi) |
10,157,000,000 |
8,267,000,000 |
|
Total
Distance Traveled Since Launch (Km) |
20,719,000,000 |
19,735,000,000 |
|
Total
Distance Traveled Since Launch (Mi) |
12,874,000,000 |
12,262,000,000 |
|
Velocity
Relative to Sun (Km/sec) |
17.191 |
15.516 |
|
Velocity
Relative to Sun (Mi/hr) |
38,229 |
34,708 |
|
Velocity
Relative to Earth (Km/sec) |
20.396 |
27.842 |
|
Velocity
Relative to Earth (Mi/hr) |
45,623 |
62,281 |
|
Round
Trip Light Time (hh:mm:ss) |
30:16:32 |
24:39:12 |