Voyager Mission Operations Status Report # 2013-06-21,  Week Ending  June 21, 2013

 

Command Transmission & Verification Operations

 

Voyager 1 command operations consisted of the uplink of a Command Loss Timer Reset and CCSTIM F/C on 06/18 [DOY 169/2025z].  The spacecraft received all commands sent and all commands were verified.

 

Voyager 2 command operations consisted of the uplink of seven bracketed Command Loss Timer Resets sent on five-minute centers using 1 Hz steps on 06/21 [DOY 172/1702z].  The spacecraft received one of the seven commands sent.

 

Sequence Generation Operations

 

 

Data Return Operations

 

Voyager 1 Data Processing and Operations:

 

There were 91.3 hours of DSN scheduled support for Voyager 1 of which 44.3 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 June 15.  The third frame of GS-4 data was recorded on June 20.  The EDR backlog is 2 days.

 

Voyager 2 Data Processing and Operations:

 

There were 72.0 hours of DSN scheduled support for Voyager 2 of which 25.6 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 a PMPCAL on 6/18 (DOY 170).

 

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

4.91

20.63

260.9

26

2

55.31*

26.18

262.2

31

                                                            *MAGROL 2013-165/1342

 

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

 

 

Voyager 1

Voyager 2

Distance from the Sun (Km)

18,640,000,000

15,258,000,000

Distance from the Sun (Mi)

11,582,000,000

9,481,000,000

Distance from the Earth (Km)

18,519,000,000

15,141,000,000

Distance from the Earth (Mi)

11,507,000,000

9,408,000,000

Total Distance Traveled Since Launch (Km)

25,159,000,000

24,139,000,000

Total Distance Traveled Since Launch (Mi)

15,633,000,000

15,000,000,000

Velocity Relative to Sun  (Km/sec)

17.039

15.427

Velocity Relative to Sun  (Mi/hr)

34,509

34,509

Velocity Relative to Earth  (Km/sec)

35.523

28.994

Velocity Relative to Earth  (Mi/hr)

79,461

64,857

Round Trip Light Time (hh:mm:ss)

34:18:10

28:03:18