Voyager Mission Operations Status Report # 2012-11-30, Week Ending November 30, 2012

 

Command Transmission & Verification Operations

 

Voyager 1 command operations consisted of the uplink of a Command Loss Timer Reset on 11/26 [DOY 331/1540z].  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 29.5 hours of DSN scheduled support for Voyager 1 of which 21.5 hours were large aperture coverage.  There were no real-time or schedule support changes made during the period.

 

There was one significant outage of 3.6 hours on 11/29 [DOY 334] due to rain over DSS-24/25 array and red Maser at DSS24 [DRs G113441, G113442 and G113443].

 

 

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 November 24.  The EDR backlog is 2 days.

 

 

Voyager 2 Data Processing and Operations:

 

There were 31.7 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 off Gyros A&C on 11/26 (DOY 331).

 

Voyager 2 performance was nominal during this report period.  Activity included turning on Gyros A&C on 11/29 (DOY 334).

 

PROPELLANT/POWER CONSUMABLES STATUS AS OF THIS REPORT

 

 

Spacecraft

Consumption

One Week (Gm)

Propellant

Remaining (Kg)

Output

(Watts)

Margin

(Watts)

1

4.06

21.60

263.2

26

2

4.64

26.54

264.3

16

 

 

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

 

 

Voyager 1

Voyager 2

Distance from the Sun (Km)

18,342,000,000

14,995,000,000

Distance from the Sun (Mi)

11,397,000,000

9,318,000,000

Distance from the Earth (Km)

18,462,000,000

15,087,000,000

Distance from the Earth (Mi)

11,472,000,000

9,375,000,000

Total Distance Traveled Since Launch (Km)

24,700,000,000

23,638,000,000

Total Distance Traveled Since Launch (Mi)

15,348,000,000

14,688,000,000

Velocity Relative to Sun  (Km/sec)

17.043

15.435

Velocity Relative to Sun  (Mi/hr)

38,123

34,526

Velocity Relative to Earth  (Km/sec)

37.252

39.978

Velocity Relative to Earth  (Mi/hr)

83,329

89,428

Round Trip Light Time (hh:mm:ss)

34:11:50

27:57:26