Voyager Mission Operations Status Report # 2013-10-18  Week Ending  October 18, 2013

 

Command Transmission & Verification Operations

 

Voyager 1 command operations consisted of the uplink of a Command Loss Timer Reset on 10/14 [DOY 287/1600z].  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 10/17 [DOY 290/1342z].  The spacecraft received two of the seven commands sent.

 

Sequence Generation Operations

 

Continue sequence development of CCSL B162.

 

Data Return Operations

 

Voyager 1 Data Processing and Operations:

 

There were 63.1 hours of DSN scheduled support for Voyager 1 of which 63.1 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 October 13.  The third frame of GS-4 data was recorded on October 18.  The EDR backlog is 2 days.

 

Voyager 2 Data Processing and Operations:

 

There were 54.7 hours of DSN scheduled support for Voyager 2 of which 37.8 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.  The EDR backlog is 2 days.

 

Flight System Performance

 

Voyager 1 performance was nominal during this report period.  Activity included turning on Gyros A&C on 10/15 (DOY 288).

 

Voyager 2 performance was nominal during this report period.  Activity included execution of a PMPCAL on 10/15 (DOY 289).

 

PROPELLANT/POWER CONSUMABLES STATUS AS OF THIS REPORT

 

 

Spacecraft

Consumption

One Week (Gm)

Propellant

Remaining (Kg)

Output

(Watts)

Margin

(Watts)

1

4.86

20.07

259.6

8

2

4.97

26.04

260.8

31

 

 

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

 

 

Voyager 1

Voyager 2

Distance from the Sun (Km)

18,814,000,000

15,412,000,000

Distance from the Sun (Mi)

11,690,000,000

9,577,000,000

Distance from the Earth (Km)

18,892,000,000

15,423,000,000

Distance from the Earth (Mi)

11,739,000,000

9,584,000,000

Total Distance Traveled Since Launch (Km)

25,593,000,000

24,520,000,000

Total Distance Traveled Since Launch (Mi)

15,903,000,000

15,236,000,000

Velocity Relative to Sun  (Km/sec)

17.036

15.423

Velocity Relative to Sun  (Mi/hr)

38,109

34,499

Velocity Relative to Earth  (Km/sec)

43.237

41.844

Velocity Relative to Earth  (Mi/hr)

96,718

93,601

Round Trip Light Time (hh:mm:ss)

34:50:42

28:34:56