Voyager Mission Operations Status
Report # 2009-01-30, Week Ending January 30, 2009
Command Transmission &
Verification Operations
Voyager 1 command operations consisted of the uplink of a Command Loss Timer Reset on 01/26 [DOY 026/1530z]. The station transmitting the command, DSS-14, was unable to support due to a failure in the azimuth tracking unit [DR G109199]. There were no command transmission 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 60.7 hours of DSN scheduled support for Voyager 1 of which 29.0 hours were large aperture coverage. There were no real-time or schedule support changes made during the period.
There were three significant outages during the period. The first outage of 3.4 hours on 01/26 [DOY 026] was caused by a failure to track in azimuth at DSS-14 [DR G109199]. The second outage of 2.0 hours resulted again from a failure to track in azimuth at DSS-14[DR G109205]. The third outage of 0.9 hours was caused by a maser failure at DSS15 also on 01/28 [DOY 028, DR G109207].
Science instrument performance was nominal for all activities during this period. One frame GS-4 data was recorded this week. A second frame of GS-4 data was recorded on January 24. The EDR backlog is 1 day.
Voyager
2 Data Processing and Operations:
There were 33.8 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 during the
period.
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. Activities included turning on the AB Gyros
followed by a CCS Timing Test on 1/30 [DOY 030].
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 |
4.87 |
26.87 |
279.0 |
33 |
|
2 |
5.19 |
28.52 |
280.5 |
35 |
RANGE, VELOCITY AND ROUND TRIP
LIGHT TIME AS OF 1/30/2009
|
|
Voyager 1 |
Voyager 2 |
|
Distance
from the Sun (Km) |
16,288,000,000 |
13,1867,000,000 |
|
Distance
from the Sun (Mi) |
10,121,000,000 |
8,193,000,000 |
|
Distance
from the Earth (Km) |
16,356,000,000 |
13,302,000,000 |
|
Distance
from the Earth (Mi) |
10,163,000,000 |
8,265,000,000 |
|
Total
Distance Traveled Since Launch (Km) |
20,679,000,000 |
19,681,000,000 |
|
Total
Distance Traveled Since Launch (Mi) |
12,849,000,000 |
12,229,000,000 |
|
Velocity
Relative to Sun (Km/sec) |
17.091 |
15.518 |
|
Velocity
Relative to Sun (Mi/hr) |
38,231 |
34,711 |
|
Velocity
Relative to Earth (Km/sec) |
24.051 |
31.422 |
|
Velocity
Relative to Earth (Mi/hr) |
53,799 |
70,288 |
|
Round
Trip Light Time (hh:mm:ss) |
30:17:40 |
24:38:52 |