Voyager Mission Operations Status
Report # 2009-06-26, Week Ending June 26, 2009
Command Transmission &
Verification Operations
Voyager 1 command operations consisted of the uplink of a Command Loss Timer Reset on 06/24 [DOY 175/1650z]. 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 1.0 Hz steps on 06/22 [DOY 173/1442z]. The spacecraft received two of the seven commands sent.
Sequence Generation Operations
Complete
sequence development of CCSL A072.
Data Return Operations
Voyager
1 Data Processing and Operations:
There were 95.3 hours of DSN scheduled support for Voyager 1 of which 12.3 hours were large aperture coverage. There was one schedule support change on 06/26 [DOY 177] when DSS-25 supported 6.7 hours in place of 6.9 hours of DSS-15 coverage down due to a Red Antenna. The total actual support was 95.1 hours of which 12.3 hours were large aperture coverage.
There were two significant outages both due to a Red Maser at DSS-45. The first outage of 4.3 hours occurred on 06/25 [DOY 176, DR C106977]. The second outage of 2.9 hours occurred the next day [DOY 176, DR C106978]
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 June 26. The EDR backlog is 2 day.
Voyager
2 Data Processing and Operations:
There were 55.2 hours of DSN scheduled support for Voyager 2 of which 9.3 hours were large aperture coverage. Four schedule changes were made all adding support. The first two changes added 1.9 and 0.6 hours of DSS-45 support on 06/20 [DOY171] and 06/21 [DOY 172]. The next day added 2.0 hours of DSS-34 support, 06/22 [DOY 173]. The fourth change added 1.9 hours of DSS-45coverage on 06/24 [DOY 175]. The total actual support was 61.6 hours of which 9.3 hours were large aperture coverage.
There was one significant outage of 1.8 hours on 06/20 [DOY 034] due to rain at DSS-45 [DR C106971].
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 |
4.75 |
26.63 |
277.4 |
33 |
|
2 |
55.41* |
28.28 |
278.7 |
33 |
*MAGROL
09-170/1507
RANGE, VELOCITY AND ROUND TRIP
LIGHT TIME AS OF 6/26/2009
|
|
Voyager 1 |
Voyager 2 |
|
Distance
from the Sun (Km) |
16,504,000,000 |
13,375,000,000 |
|
Distance
from the Sun (Mi) |
10,255,000,000 |
8,311,000,000 |
|
Distance
from the Earth (Km) |
16,387,000,000 |
13,252,000,000 |
|
Distance
from the Earth (Mi) |
10,182,000,000 |
8,234,000,000 |
|
Total
Distance Traveled Since Launch (Km) |
20,992,000,000 |
20,004,000,000 |
|
Total
Distance Traveled Since Launch (Mi) |
13,044,000,000 |
12,430,000,000 |
|
Velocity
Relative to Sun (Km/sec) |
17.083 |
15.507 |
|
Velocity
Relative to Sun (Mi/hr) |
38,214 |
34,687 |
|
Velocity
Relative to Earth (Km/sec) |
36.497 |
29.826 |
|
Velocity
Relative to Earth (Mi/hr) |
81,642 |
66,717 |
|
Round
Trip Light Time (hh:mm:ss) |
30:21:14 |
24:24:18 |