Voyager Mission Operations Status Report # 2013-07-26  Week Ending  July 26, 2013

 

Command Transmission & Verification Operations

 

Voyager 1 command operations consisted of the uplink of a Command Loss Timer Reset on 07/23 [DOY 204/1415z].  The spacecraft received the command.

 

There were no command operations in support of Voyager 2 during the period.

 

Sequence Generation Operations

 

 

Data Return Operations

 

Voyager 1 Data Processing and Operations:

 

There were 81.3 hours of DSN scheduled support for Voyager 1 of which 25.9 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 July 20.  The third frame of GS-4 data was recorded on July 25.  The EDR backlog is 1 days.

 

Voyager 2 Data Processing and Operations:

 

There were 70.6 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.  Activity included switching to the B&C gyros on 7/26 (DOY 208).

 

Voyager 2 performance was nominal during this report period.  Activity included a PMPCAL on 7/23 (DOY 204).

 

PROPELLANT/POWER CONSUMABLES STATUS AS OF THIS REPORT

 

 

Spacecraft

Consumption

One Week (Gm)

Propellant

Remaining (Kg)

Output

(Watts)

Margin

(Watts)

1

5.14

20.60

260.6

13

2

5.18

26.16

261.8

31

 

 

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

 

 

Voyager 1

Voyager 2

Distance from the Sun (Km)

18,691,000,000

15,303,000,000

Distance from the Sun (Mi)

11,614,000,000

9,509,000,000

Distance from the Earth (Km)

18,608,000,000

15,182,000,000

Distance from the Earth (Mi)

11,562,000,000

9,434,000,000

Total Distance Traveled Since Launch (Km)

25,276,000,000

24,236,000,000

Total Distance Traveled Since Launch (Mi)

15,706,000,000

15,059,000,000

Velocity Relative to Sun  (Km/sec)

17.038

15.426

Velocity Relative to Sun  (Mi/hr)

38,112

34,506

Velocity Relative to Earth  (Km/sec)

41.150

34.547

Velocity Relative to Earth  (Mi/hr)

92,049

77,274

Round Trip Light Time (hh:mm:ss)

34:28:06

28:07:58