Voyager Mission Operations Status Report # 2013-02-22,  Week Ending  February 22, 2013

 

Command Transmission & Verification Operations

 

Voyager 1 command operations consisted of the uplink of a Command Loss Timer Reset on 02/20 [DOY 051/0225z].  The command uplink was cancelled due to a Red Transmitter at DSS-63.  There were no other command operations during the period.

 

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 55.9 hours of DSN scheduled support for Voyager 1 of which 37.1 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 February 16. The EDR backlog is 2 days.

 

 

Voyager 2 Data Processing and Operations:

 

There were 27.2 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 turning on the A&C Gyros on 2/20 (DOY 051).

 

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

5.27

21.50

262.3

13

2

4.03

26.42

263.4

33

 

 

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

 

 

Voyager 1

Voyager 2

Distance from the Sun (Km)

18,465,000,000

15,104,000,000

Distance from the Sun (Mi)

11,474,000,000

9,385,000,000

Distance from the Earth (Km)

18,490,000,000

15,192,000,000

Distance from the Earth (Mi)

11,489,000,000

9,440,000,000

Total Distance Traveled Since Launch (Km)

24,905,000,000

23,887,000,000

Total Distance Traveled Since Launch (Mi)

15,475,000,000

14,843,000,000

Velocity Relative to Sun  (Km/sec)

17.041

15.431

Velocity Relative to Sun  (Mi/hr)

38,119

34,519

Velocity Relative to Earth  (Km/sec)

20.130

27.491

Velocity Relative to Earth  (Mi/hr)

45,029

61,495

Round Trip Light Time (hh:mm:ss)

34:14:48

28:09:00