Voyager Mission Operations Status Report # 2013-05-10,  Week Ending  May 10, 2013

 

Command Transmission & Verification Operations

 

Voyager 1 command operations consisted of the uplink of a Command Loss Timer Reset on 05/09 [DOY 129/1255z].  The spacecraft received the command.

 

There were no command operations in support of Voyager 2 during the period due to DSS-43 downtime.

 

Sequence Generation Operations

 

 

Data Return Operations

 

Voyager 1 Data Processing and Operations:

 

There were 110.8 hours of DSN scheduled support for Voyager 1 of which 49.7 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.  One frame of GS-4 data was recorded this week.  A second frame of GS-4 data was recorded on May 10.  The EDR backlog is 2 days.

 

 

Voyager 2 Data Processing and Operations:

 

There were 63.5 hours of DSN scheduled support for Voyager 2 of which 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 turning off the A&C gyros and switching to X-Band low power on 5/9 (DOY 129).

 

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

269.20*

20.77

261.4

26

2

5.23

26.27

262.6

31

                                                            *ASCAL 2013-120, 4 LECP Observations 2013-120 thru 123

 

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

 

 

Voyager 1

Voyager 2

Distance from the Sun (Km)

18,578,000,000

15,204,000,000

Distance from the Sun (Mi)

11,544,000,000

9,447,000,000

Distance from the Earth (Km)

18,467,000,000

15,142,000,000

Distance from the Earth (Mi)

11,475,000,000

9,409,000,000

Total Distance Traveled Since Launch (Km)

25,046,000,000

24,045,000,000

Total Distance Traveled Since Launch (Mi)

15,563,000,000

14,941,000,000

Velocity Relative to Sun  (Km/sec)

17.039

15.429

Velocity Relative to Sun  (Mi/hr)

38,116

34,512

Velocity Relative to Earth  (Km/sec)

26.779

23.464

Velocity Relative to Earth  (Mi/hr)

59,903

52,486

Round Trip Light Time (hh:mm:ss)

34:12:16

28:03:26