Voyager
Command Transmission &
Verification Operations
Voyager 1 command operations consisted of the uplink of a Command Loss Timer Reset on 05/14 [DOY 134/1430z]. The spacecraft received the command.
Voyager 2 command operations consisted of the uplink of a Command Loss Timer Reset, CCSL B134C, and two SID MRO on 05/12 [DOY 132/1250z]. The spacecraft received all commands sent, the CCSL was verified and the MROs were received nominally.
Sequence Generation Operations
Continue
sequence development of CCSL B144 mini-sequence.
Data Return Operations
Voyager
1 Data Processing and Operations:
There were 89.7 hours of DSN scheduled
support for Voyager 1 of which 12.9 hours were large aperture coverage. There
was one schedule support change on 05/13 [DOY 135] when DSS-55 supported 3.3
hours in place of 5.7 hours of DSS-54 coverage.
The total actual support was 87.3 hours of which 12.9 hours were large
aperture coverage. There were no
significant outages during the period
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 May 15. The EDR backlog is 2
day.
Voyager
2 Data Processing and Operations:
There were 43.9 hours of DSN scheduled support for Voyager 2 of which 32.4 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. Activity included switching to X-Band low
power on 5/14 [DOY 134].
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 |
48.11* |
26.66 |
277.9 |
33 |
|
2 |
4.95 |
28.36 |
279.3 |
33 |
*
MAGROL 2009-128/0657
RANGE, VELOCITY AND ROUND TRIP
LIGHT TIME AS OF 5/15/2009
|
|
Voyager 1 |
Voyager 2 |
|
Distance
from the Sun (Km) |
16,442,000,000 |
13,321,000,000 |
|
Distance
from the Sun (Mi) |
10,217,000,000 |
8,277,000,000 |
|
Distance
from the Earth (Km) |
16,326,000,000 |
13,248,000,000 |
|
Distance
from the Earth (Mi) |
10,144,000,000 |
8,232,000,000 |
|
Total
Distance Traveled Since Launch (Km) |
20,875,000,000 |
19,908,000,000 |
|
Total
Distance Traveled Since Launch (Mi) |
12,971,000,000 |
12,370,000,000 |
|
Velocity
Relative to Sun (Km/sec) |
17.086 |
15.510 |
|
Velocity
Relative to Sun (Mi/hr) |
38,219 |
34,694 |
|
Velocity
Relative to Earth (Km/sec) |
27.840 |
23.885 |
|
Velocity
Relative to Earth (Mi/hr) |
62,276 |
53,429 |
|
Round
Trip Light Time (hh:mm:ss) |
30:14:20 |
24:32:50 |