Voyager Mission Operations Status Report # 2014-01-31  Week Ending  January 31, 2014.

 

Command Transmission & Verification Operations

 

Voyager 1 command operations consisted of the uplink of a Command Loss Timer Reset on 01/29 [DOY 029/1600z].  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 01/29 [DOY 029/0132z].  The spacecraft received one of the seven commands sent.

 

Sequence Generation Operations

 

Complete sequence development of CCSL B163.

 

Data Return Operations

 

Voyager 1 Data Processing and Operations:

 

There were 38.8 hours of DSN scheduled support for Voyager 1 of which 38.8 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 January 30.  The third frame of GS-4 data was recorded on January 25.  The EDR backlog is 2 days.

 

Voyager 2 Data Processing and Operations:

 

There were 44.6 hours of DSN scheduled support for Voyager 2 of which 43.0 hours were large aperture coverage. One schedule support change was made on 01/25 [DOY 025] when 1.6 hours of DSS-45 support was added. The total actual support for the period was 46.2 hours of which 43.0 hours were large aperture coverage.  There were no significant outages

 

 

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 a PMPCAL on 1/29 (DOY 029) and X-Band high power & MAGROL on 1/31 (DOY 031).

 

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

5.25

19.55

258.5

15.5

2

5.42

25.86

259.6

30

 

 

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

 

 

Voyager 1

Voyager 2

Distance from the Sun (Km)

18,968,000,000

15,548,000,000

Distance from the Sun (Mi)

11,786,000,000

9,661,000,000

Distance from the Earth (Km)

19,037,000,000

15,661,000,000

Distance from the Earth (Mi)

11,829,000,000

9,731,000,000

Total Distance Traveled Since Launch (Km)

25,909,000,000

24,867,000,000

Total Distance Traveled Since Launch (Mi)

16,099,000,000

15,452,000,000

Velocity Relative to Sun  (Km/sec)

17.035

15.419

Velocity Relative to Sun  (Mi/hr)

38,105

34,491

Velocity Relative to Earth  (Km/sec)

23.900

31.265

Velocity Relative to Earth  (Mi/hr)

53,463

69,938

Round Trip Light Time (hh:mm:ss)

35:15:32

29:01:12