Voyager Mission Operations Status Report # 2013-03-01,  Week Ending  March 1, 2013

 

Command Transmission & Verification Operations

 

Voyager 1 command operations consisted of the uplink of a Command Loss Timer Reset and CCSTIM on 02/23 [DOY 054/0225z].  The spacecraft received all commands sent and all commands were verified.

 

There were no command operations in support of Voyager 2 during the period due to DSS-43 downtime.

 

Sequence Generation Operations

 

Start development of CCSL A087.

 

Data Return Operations

 

Voyager 1 Data Processing and Operations:

 

There were 63.3 hours of DSN scheduled support for Voyager 1 of which 31.4 hours were large aperture coverage. There were no real-time or schedule support changes made during the period.

 

There was one significant outage of 2.6 hours on 02/28 [DOY 059] due to snow at DSS-65/55 [DR M107126].

 

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 23.  The EDR backlog is 2 days.

 

 

Voyager 2 Data Processing and Operations:

 

There were 30.9 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 during the period.

 

There were two significant outages both due to rain over DSS-45.  The first outage of 2.3 hours occurred on 02/23 [DOY 054, DR C109247].  The second outage of 1.5 hours occurred on 02/27 [DOY 058, DR C109255]

 

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 swapping to the B&C Gyros on 2/28 (DOY 059).

 

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

4.93

21.50

262.2

13

2

5.61

26.42

263.3

33

 

 

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

 

 

Voyager 1

Voyager 2

Distance from the Sun (Km)

18,475,000,000

15,113,000,000

Distance from the Sun (Mi)

11,480,000,000

9,391,000,000

Distance from the Earth (Km)

18,486,000,000

15,191,000,000

Distance from the Earth (Mi)

11,487,000,000

9,439,000,000

Total Distance Traveled Since Launch (Km)

24,917,000,000

23,903,000,000

Total Distance Traveled Since Launch (Mi)

15,483,000,000

14,853,000,000

Velocity Relative to Sun  (Km/sec)

17.041

15.431

Velocity Relative to Sun  (Mi/hr)

38,119

34,518

Velocity Relative to Earth  (Km/sec)

19.419

26.496

Velocity Relative to Earth  (Mi/hr)

43,438

59,068

Round Trip Light Time (hh:mm:ss)

34:14:18

28:08:48