Voyager
Command Transmission &
Verification Operations
Voyager 1 command operations consisted of the uplink of a Command Loss Timer Reset on 05/07 [DOY 127/1430z]. The spacecraft received the command.
There were no command operations in support of Voyager 2 during the period.
Sequence Generation Operations
Start
sequence development of CCSL B144 mini-sequence to update and extend the HPOINT
Tables.
Data Return Operations
Voyager
1 Data Processing and Operations:
There were 83.7 hours of DSN scheduled support for Voyager 1 of which 22.7 hours were large aperture coverage. There was one schedule and one real-time change made. The real-time change occurred on 05/04 [DOY 124] when 4.8 hours of DSS-24 and DSS-25 support substituted for 5.3 hours of DSS-14 down due to a red sub reflector [DR G109409]. The schedule change added on 05/08 [DOY 128] 2.0 hours of DSS-65 support. The total actual support was 85.2 hours of which 17.4 hours were large aperture coverage
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 1. The EDR backlog is 2
day.
Voyager
2 Data Processing and Operations:
There were 49.8 hours of DSN scheduled support for Voyager 2 of which 27.3 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. Activities included an ASCAL on 5/5 [DOY 125]
and a MAGROL followed by gyros OFF on 5/8 [DOY 128].
Voyager
2 performance was nominal during this report period. Activity included a PMPCAL on 5/5 [DOY 125].
PROPELLANT/POWER CONSUMABLES
STATUS AS OF THIS REPORT
|
Spacecraft |
Consumption One Week (Gm) |
Propellant Remaining (Kg) |
Output (Watts) |
Margin (Watts) |
|
1 |
6.52 |
26.71 |
278.0 |
35 |
|
2 |
4.79 |
28.37 |
279.3 |
34 |
RANGE, VELOCITY AND ROUND TRIP
LIGHT TIME AS OF 5/8/2009
|
|
Voyager 1 |
Voyager 2 |
|
Distance
from the Sun (Km) |
16,4332,000,000 |
13,312,000,000 |
|
Distance
from the Sun (Mi) |
10,210,000,000 |
8,272,000,000 |
|
Distance
from the Earth (Km) |
16,321,000,000 |
13,252,000,000 |
|
Distance
from the Earth (Mi) |
10,142,000,000 |
8,234,000,000 |
|
Total
Distance Traveled Since Launch (Km) |
20,859,000,000 |
19,893,000,000 |
|
Total
Distance Traveled Since Launch (Mi) |
12,961,000,000 |
12,361,000,000 |
|
Velocity
Relative to Sun (Km/sec) |
17.086 |
15.510 |
|
Velocity
Relative to Sun (Mi/hr) |
38,220 |
34,695 |
|
Velocity
Relative to Earth (Km/sec) |
26.338 |
23.245 |
|
Velocity
Relative to Earth (Mi/hr) |
58,915 |
51,996 |
|
Round
Trip Light Time (hh:mm:ss) |
30:13:52 |
24:33:16 |