Voyager Mission Operations Status Report # 2013-03-22,  Week Ending  March 22, 2013

 

Command Transmission & Verification Operations

 

Voyager 1 command operations consisted of the uplink of a Command Loss Timer Reset on 03/18 [DOY 077/1345z].  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

 

Continue sequence development of CCSL A087.

 

Data Return Operations

 

Voyager 1 Data Processing and Operations:

 

There were 67.8 hours of DSN scheduled support for Voyager 1 of which 46.8 hours were large aperture coverage. There were no real-time or schedule support changes made during the period.

 

There was one significant outage of 1.9 hours on 03/17 [DOY 076] due to a red servo pump at DSS-14 [DR G113780]

 

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 March 16.  The EDR backlog is 1 days.

 

Voyager 2 Data Processing and Operations:

 

There were 40.8 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 DTR Maintenance on 3/19 (DOY 078).

 

Voyager 2 performance was nominal during this report period.  Activity included turning off Gyros A&C on 2/21 (DOY 081).

 

PROPELLANT/POWER CONSUMABLES STATUS AS OF THIS REPORT

 

 

Spacecraft

Consumption

One Week (Gm)

Propellant

Remaining (Kg)

Output

(Watts)

Margin

(Watts)

1

5.04

21.06

261.9

28

2

52.76*

26.35

263.1

18

                                                            *MAGROL 2013-073

 

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

 

 

Voyager 1

Voyager 2

Distance from the Sun (Km)

18,506,000,000

15,140,000,000

Distance from the Sun (Mi)

11,499,000,000

9,408,000,000

Distance from the Earth (Km)

18,472,000,000

15,179,000,000

Distance from the Earth (Mi)

11,478,000,000

9,432,000,000

Total Distance Traveled Since Launch (Km)

24,951,000,000

23,948,000,000

Total Distance Traveled Since Launch (Mi)

15,504,000,000

14,881,000,000

Velocity Relative to Sun  (Km/sec)

17.041

15.430

Velocity Relative to Sun  (Mi/hr)

38,118

34,516

Velocity Relative to Earth  (Km/sec)

19.092

23.737

Velocity Relative to Earth  (Mi/hr)

42,707

53,098

Round Trip Light Time (hh:mm:ss)

34:12:50

28:07:30