Voyager Mission Operations Status Report # 2014-02-21  Week Ending  February 21, 2014.

 

Command Transmission & Verification Operations

 

Voyager 1 command operations consisted of the uplink of a Command Loss Timer Reset on 02/18 [DOY 049/2000z].  The spacecraft received the command.

 

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

 

Sequence Generation Operations

 

Start sequence development of CCSL A091.

 

Data Return Operations

 

Voyager 1 Data Processing and Operations:

 

There were 52.5 hours of DSN scheduled support for Voyager 1 of which 44.3 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.  The second frame of GS-4 data was recorded on February 20.  The EDR backlog is 2 days.

 

Voyager 2 Data Processing and Operations:

 

There were 63.2 hours of DSN scheduled support for Voyager 2 of which 39.5 hours were large aperture coverage. One schedule support change made on 02/17 [DOY 048] substituted 11.8 hours of DSS-45 support in place of the 7.4 hour DSS-43 support originally scheduled.  The total actual support for the period was 67.6 hours of which 32.1 hours were large aperture coverage.

 

There were two significant outages both due to torrential rain during the day 02/15 [DOY 046].  The first outage of 5.5 hours occurred over DSS-43 [DR C110005].  The second outage of 6.8 hours occurred during the following track over DSS-34 [DR C110006].

 

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

5.23

19.16

258.2

28.2

2

5.34

25.84

259.4

30.0

 

 

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

 

 

Voyager 1

Voyager 2

Distance from the Sun (Km)

18,999,000,000

15,575,000,000

Distance from the Sun (Mi)

11,805,000,000

9,678,000,000

Distance from the Earth (Km)

19,027,000,000

15,665,000,000

Distance from the Earth (Mi)

11,823,000,000

9,734,000,000

Total Distance Traveled Since Launch (Km)

25,949,000,000

24,920,000,000

Total Distance Traveled Since Launch (Mi)

16,124,000,000

15,485,000,000

Velocity Relative to Sun  (Km/sec)

17.034

15.418

Velocity Relative to Sun  (Mi/hr)

38,104

34,490

Velocity Relative to Earth  (Km/sec)

20.300

27.704

Velocity Relative to Earth  (Mi/hr)

45,409

61,972

Round Trip Light Time (hh:mm:ss)

35:14:26

29:01:36