Voyager Mission Operations Status
Report # 2012-03-02, Week Ending March 2
Command Transmission &
Verification Operations
Voyager
1 command operations consisted of the uplink of a Command Loss Timer Reset on 02/28
[DOY 059/1400z]. 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 0.5 Hz steps on 02/28 [DOY 059/1722z].
The spacecraft received three of the seven commands sent
Sequence Generation Operations
No
sequence development activity.
Data Return Operations
Voyager
1 Data Processing and Operations:
There
were 35.9 hours of DSN scheduled support for Voyager 1 of which 11.2 hours were
large aperture coverage. There were no real-time or schedule support changes
made during the period.
There
was one significant outage of 3.7 hours on 02/29 [DOY 060] due to heavy rain at
DSS-43, DR C108559.
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
March 2. The EDR backlog is 1 day.
Voyager
2 Data Processing and Operations:
There were 37.5 hours of DSN scheduled support for
Voyager 2 of which 22.8 hours were large aperture coverage. There were no real-time or schedule support
changes made or significant outages during the period.
There
was one significant outage of 4.3 hours on 02/29 [DOY 060] due to heavy rain at
DSS-34, DR C108558.
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 BC Gyros
on 2/28 (DOY 059) and a PMPCAL on 2/29 (DOY 029).
Voyager
2 performance was nominal during this report period. Activity included turning on the AC Gyros on
3/1 (DOY 061).
PROPELLANT/POWER CONSUMABLES STATUS
AS OF THIS REPORT
|
Spacecraft |
Consumption One Week (Gm) |
Propellant Remaining (Kg) |
Output (Watts) |
Margin (Watts) |
|
1 |
4.75 |
23.50 |
266.3 |
19 |
|
2 |
5.30 |
26.97 |
267.5 |
22 |
RANGE, VELOCITY AND ROUND TRIP LIGHT
TIME AS OF THIS REPORT
|
|
Voyager 1 |
Voyager 2 |
|
Distance
from the Sun (Km) |
17,942,000,000 |
14,642,000,000 |
|
Distance
from the Sun (Mi) |
11,148,000,000 |
9,098,000,000 |
|
Distance
from the Earth (Km) |
17,949,000,000 |
14,717,000,000 |
|
Distance
from the Earth (Mi) |
11,153,000,000 |
9,145,000,000 |
|
Total
Distance Traveled Since Launch (Km) |
23,874,000,000 |
22,869,000,000 |
|
Total
Distance Traveled Since Launch (Mi) |
14,835,000,000 |
14,210,000,000 |
|
Velocity
Relative to Sun (Km/sec) |
17.048 |
15.447 |
|
Velocity
Relative to Sun (Mi/hr) |
38,135 |
34,553 |
|
Velocity
Relative to Earth (Km/sec) |
19.321 |
26.220 |
|
Velocity
Relative to Earth (Mi/hr) |
43,219 |
58,653 |
|
Round
Trip Light Time (hh:mm:ss) |
33:14:40 |
27:16:12 |