Voyager Mission Operations Status Report # 2012-01-27, Week Ending January 27, 2012

 

Command Transmission & Verification Operations

 

Voyager 1 command operations consisted of the uplink of a Command Loss Timer Reset on 01/27 [DOY 027/1430z].  The spacecraft received the command.

 

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

 

Sequence Generation Operations

 

Continue sequence development of CCSL A082B.

 

Data Return Operations

 

Voyager 1 Data Processing and Operations:

 

There were 36.7 hours of DSN scheduled support for Voyager 1 of which 36.7 hours were large aperture coverage.  There were no real-time or schedule support changes made during the period.

 

There was one significant outage of 0.8 hours on 01/21 [DOY 021] due to DSS-14 antenna put to stow with winds in excess of 54 mph [DR G112276].

 

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 27.  The EDR backlog is 2 days.

 

 

Voyager 2 Data Processing and Operations:

 

There were 27.8 hours of DSN scheduled support for Voyager 2 of which 24.9 hours were large aperture coverage.  There were no real-time or schedule support changes made during the period.

 

There was one significant outage of 0.8 hours on 01/25 [DOY 025] DSS-45 supported with the HEMT due to a Red MASER [DR C108478].

 

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.  Activities included LECP Observations on 1/23 (DOY 024) and 1/25 (DOY 025).

 

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

163.19*

23.69

266.7

15

2

5.44

27.00

267.9

39

                                                            *LECP Observations, 2012-020, 2012-023, And 2012-25

 

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

 

 

Voyager 1

Voyager 2

Distance from the Sun (Km)

17,890,000,000

14,596,000,000

Distance from the Sun (Mi)

11,116,000,000

9,070,000,000

Distance from the Earth (Km)

17,966,000,000

14,714,000,000

Distance from the Earth (Mi)

11,164,000,000

9,143,000,000

Total Distance Traveled Since Launch (Km)

23,808,000,000

22,782,000,000

Total Distance Traveled Since Launch (Mi)

14,794,000,000

14,156,000,000

Velocity Relative to Sun  (Km/sec)

17.049

15.448

Velocity Relative to Sun  (Mi/hr)

38,137

34,556

Velocity Relative to Earth  (Km/sec)

24.833

32.042

Velocity Relative to Earth  (Mi/hr)

55,549

71,675

Round Trip Light Time (hh:mm:ss)

33:16:34

27:15:50