Voyager Mission Operations Status Report # 2013-10-04  Week Ending  October 4, 2013

 

Command Transmission & Verification Operations

 

Voyager 1 command operations consisted of the uplink of a Command Loss Timer Reset, CCSL A089, MEMUPD ECR, TLMPRG, ECR and AHELI2 MROs on 10/01 [DOY 274/1520z].  The spacecraft received all commands sent and the CCSL and MROs were verified.

 

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 10/03 [DOY 276/1332z].  The spacecraft received three of the seven commands sent.

 

Sequence Generation Operations

 

Start sequence development of CCSL B162.

 

Data Return Operations

 

Voyager 1 Data Processing and Operations:

 

There were 65.5 hours of DSN scheduled support for Voyager 1 of which 61.5 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 September 29.  The third frame of GS-4 data was recorded on October 4.  The EDR backlog is 2 days.

 

Voyager 2 Data Processing and Operations:

 

There were 55.9 hours of DSN scheduled support for Voyager 2 of which 35.7 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.

 

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

4.10

20.83

259.8

20

2

5.82

26.05

261.0

31

 

 

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

 

 

Voyager 1

Voyager 2

Distance from the Sun (Km)

18,793,000,000

15,394,000,000

Distance from the Sun (Mi)

11,678,000,000

9,565,000,000

Distance from the Earth (Km)

18,847,000,000

15,376,000,000

Distance from the Earth (Mi)

11,711,000,000

9,554,000,000

Total Distance Traveled Since Launch (Km)

25,540,000,000

24,470,000,000

Total Distance Traveled Since Launch (Mi)

15,870,000,000

15,205,000,000

Velocity Relative to Sun  (Km/sec)

17.037

15.423

Velocity Relative to Sun  (Mi/hr)

38,110

34,500

Velocity Relative to Earth  (Km/sec)

44.191

41.578

Velocity Relative to Earth  (Mi/hr)

98,851

93,008

Round Trip Light Time (hh:mm:ss)

34:54:42

28:29:38