Voyager Mission Operations Status Report # 2013-09-27 Week Ending  September 27, 2013

 

Command Transmission & Verification Operations

 

Voyager 1 command operations consisted of the uplink of a Command Loss Timer Reset on 09/23 [DOY 266/1905z].  The spacecraft received the command.

 

Voyager 2 command operations consisted of the uplink of seven bracketed Command Loss Timer Resets sent on five-minute centers using 0.5 Hz steps on 09/25 [DOY 268/1647z].  The spacecraft received two of the seven commands sent.

 

Sequence Generation Operations

 

Complete sequence development of CCSL A089.

 

Data Return Operations

 

Voyager 1 Data Processing and Operations:

 

There were 58.4 hours of DSN scheduled support for Voyager 1 of which 50.0 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.  One frame of GS-4 data was recorded this week.  A second frame of GS-4 data was recorded on September 22.  The third frame of GS-4 data was recorded on September 27.  The EDR backlog is 2 days.

 

 

Voyager 2 Data Processing and Operations:

 

There were 52.0 hours of DSN scheduled support for Voyager 2 of which 23.8 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.

 

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

5.24

20.09

259.9

22

2

5.50

26.06

261.1

31

 

 

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

 

 

Voyager 1

Voyager 2

Distance from the Sun (Km)

18,783,000,000

15,385,000,000

Distance from the Sun (Mi)

11,671,000,000

9,560,000,000

Distance from the Earth (Km)

18,823,000,000

15,352,000,000

Distance from the Earth (Mi)

11,696,000,000

9,539,000,000

Total Distance Traveled Since Launch (Km)

25,513,000,000

24,445,000,000

Total Distance Traveled Since Launch (Mi)

15,853,000,000

15,189,000,000

Velocity Relative to Sun  (Km/sec)

17.037

15.423

Velocity Relative to Sun  (Mi/hr)

38,109

34,500

Velocity Relative to Earth  (Km/sec)

44.447

41.263

Velocity Relative to Earth  (Mi/hr)

99,425

92,303

Round Trip Light Time (hh:mm:ss)

34:52:04

28:27:00