Voyager Mission Operations Status Report # 2012-04-20, Week Ending April 20, 2012

 

Command Transmission & Verification Operations

 

There were no command operations in support of Voyager 1 during the period.

 

There were no command operations in support of Voyager 2 during the period.

 

Sequence Generation Operations

 

Continue sequence development of CCLS B156.

 

Data Return Operations

 

Voyager 1 Data Processing and Operations:

 

There were 46.4 hours of DSN scheduled support for Voyager 1 of which 35.3 hours were large aperture coverage.  There were no real-time or schedule support changes made during the period.

 

There was one significant outage of 2.1 hours on 04/18 [DOY 109] due to heavy rain at DSS-43, DR C108623.

 

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 April 20.  The EDR backlog is 2 days.

 

 

Voyager 2 Data Processing and Operations:

 

There were 36.6 hours of DSN scheduled support for Voyager 2 of which 3.5 hours were large aperture coverage.  There were no real-time or schedule support changes made during the period.

 

There was one significant outage of 2.3 hours on 04/18 [DOY 109] due to heavy rain at DSS-45, DR C108622.

 

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.  Activity included turning on the BC gyros on 4/18 (DOY 109).

 

PROPELLANT/POWER CONSUMABLES STATUS AS OF THIS REPORT

 

 

Spacecraft

Consumption

One Week (Gm)

Propellant

Remaining (Kg)

Output

(Watts)

Margin

(Watts)

1

5.68

23.43

265.8

18

2

6.50

26.89

266.9

28

 

 

RANGE, VELOCITY AND ROUND TRIP LIGHT TIME AS OF THIS REPORT

 

 

Voyager 1

Voyager 2

Distance from the Sun (Km)

18,013,000,000

14,705,000,000

Distance from the Sun (Mi)

11,193,000,000

9,137,000,000

Distance from the Earth (Km)

17,926,000,000

14,682,000,000

Distance from the Earth (Mi)

11,139,000,000

9,123,000,000

Total Distance Traveled Since Launch (Km)

23,958,000,000

22,970,000,000

Total Distance Traveled Since Launch (Mi)

14,887,000,000

14,273,000,000

Velocity Relative to Sun  (Km/sec)

17.047

15.444

Velocity Relative to Sun  (Mi/hr)

38,133

34,548

Velocity Relative to Earth  (Km/sec)

22.807

22.452

Velocity Relative to Earth  (Mi/hr)

51,017

58,223

Round Trip Light Time (hh:mm:ss)

33:12:10

27:12:18