Voyager Mission Operations Status Report # 2013-02-01,  Week Ending  February 1, 2013

 

Command Transmission & Verification Operations

 

Voyager 1 command operations consisted of the uplink of an X Band High Power and Command Loss Timer Reset on 01/29 [DOY 029/0350z].  The spacecraft received the commands.  Later in the week an X Band Low Power was uplinked on 02/01 [DOY 032/1641z].  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 49.7 hours of DSN scheduled support for Voyager 1 of which 31.6 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.  One frame of GS-4 data was recorded this week.  A second frame of GS-4 data was recorded on January 26.  The EDR backlog is 2 days.

 

Voyager 2 Data Processing and Operations:

 

There were 30.9 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 during the period.

 

There were two significant outages due to heavy rain.  The first outage of 1.0 hours on 01/27 [DOY 027, DR C109217] occurred over DSS-45. The second outage of 0.8 hours continued during the next support on 01/28 [DOY 028, DR C109219] over DSS-34.

 

Science instrument performance was nominal for all activities during this period.  The EDR backlog is 1 days.

 

 

Flight System Performance

 

Voyager 1 performance was nominal during this report period.  Activities included a PMPCAL on 1/30 (DOY 030) and a MAGROL followed by X-Band low power and turn off of Gyros B&C on 2/1 (DOY 032).

 

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

4.83

21.56

262.5

13

2

4.89

26.44

263.6

33

 

 

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

 

 

Voyager 1

Voyager 2

Distance from the Sun (Km)

18,434,000,000

15,077,000,000

Distance from the Sun (Mi)

11,455,000,000

9,368,000,000

Distance from the Earth (Km)

18,500,000,000

15,189,000,000

Distance from the Earth (Mi)

11,496,000,000

9,348,000,000

Total Distance Traveled Since Launch (Km)

24,866,000,000

23,834,000,000

Total Distance Traveled Since Launch (Mi)

15,451,000,000

14,810,000,000

Velocity Relative to Sun  (Km/sec)

17.041

15.432

Velocity Relative to Sun  (Mi/hr)

38,120

34,520

Velocity Relative to Earth  (Km/sec)

23.635

31.042

Velocity Relative to Earth  (Mi/hr)

52,870

69,438

Round Trip Light Time (hh:mm:ss)

34:15:58

28:08:42