Voyager Mission Operations Status Report # 2014-02-07  Week Ending  February 7, 2014.

 

Command Transmission & Verification Operations

 

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

 

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 02/04 [DOY 035/2132z].   The radiation of the command occurred one hour later than scheduled due to a transmitter problem [DR C109960].  The spacecraft received five of the seven commands sent.

 

Sequence Generation Operations

 

No sequence development activity during this period.

 

Data Return Operations

 

Voyager 1 Data Processing and Operations:

 

There were 46.8 hours of DSN scheduled support for Voyager 1 of which 42.0 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.  One frame of GS-4 data was recorded this week.  A second frame of GS-4 data was recorded on February 6.  The third frame of GS-4 data was recorded on February 1.  The EDR backlog is 2 days.

 

Voyager 2 Data Processing and Operations:

 

There were 52.8 hours of DSN scheduled support for Voyager 2 of which 47.0 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 Low Energy Charged Particle roll maneuvers on 2/4 (DOY 035) and 2/6 (DOY 038).

 

Voyager 2 performance was nominal during this report period.  Activity included a PMPCAL on 2/4 (DOY 035).

 

PROPELLANT/POWER CONSUMABLES STATUS AS OF THIS REPORT

 

 

Spacecraft

Consumption

One Week (Gm)

Propellant

Remaining (Kg)

Output

(Watts)

Margin

(Watts)

1

120.71*

19.43

258.4

17.3

2

4.49

25.86

259.5

30

 

 

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

 

 

Voyager 1

Voyager 2

Distance from the Sun (Km)

18,978,000,000

15,557,000,000

Distance from the Sun (Mi)

11,793,000,000

9,667,000,000

Distance from the Earth (Km)

19,034,000,000

15,664,000,000

Distance from the Earth (Mi)

11,827,000,000

9,733,000,000

Total Distance Traveled Since Launch (Km)

25,923,000,000

24,885,000,000

Total Distance Traveled Since Launch (Mi)

16,108,000,000

15,463,000,000

Velocity Relative to Sun  (Km/sec)

17.034

15.419

Velocity Relative to Sun  (Mi/hr)

38,105

34,490

Velocity Relative to Earth  (Km/sec)

22.517

30.046

Velocity Relative to Earth  (Mi/hr)

50,369

67,211

Round Trip Light Time (hh:mm:ss)

35:15:16

29:01:30