Voyager Mission Operations Status Report # 2014-02-14  Week Ending  February 14, 2014.

 

Command Transmission & Verification Operations

 

Voyager 1 command operations consisted of the uplink of a Command Loss Timer Reset on 02/10 [DOY 041/0315z].  The spacecraft received the command.

 

Voyager 2 command operations consisted of the uplink of a Command Loss Timer Reset and CCSL B163 on 02/11 [DOY 042/0030z].  The spacecraft received all commands sent and the CCSL was verified.

 

Sequence Generation Operations

 

No sequence development activity during this period.

 

Data Return Operations

 

Voyager 1 Data Processing and Operations:

 

There were 61.1 hours of DSN scheduled support for Voyager 1 of which 52.8 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.  Twenty-four frames of data were recovered from a playback of GS-4 data on February 13.  The third frame of GS-4 data was recorded on February 8.  The EDR backlog is 2 days.

 

Voyager 2 Data Processing and Operations:

 

There were 57.3 hours of DSN scheduled support for Voyager 2 of which 39.6 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.  Activities included LECP observations on 2/9 (DOY 041), 2/10 (DOY 042), 2/11 (DOY 042), & 2/12 (DOY 043) and a DTR PWS playback on 2/13 (DOY 044).

 

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

265.53*

19.17

258.3

30

2

6.33

25.85

259.9

30

                                                          *4 LECP Observations 2014-037, 041, 042, 043 & 1 ASCAL 043

 

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

 

 

Voyager 1

Voyager 2

Distance from the Sun (Km)

18,988,000,000

15,566,000,000

Distance from the Sun (Mi)

11,799,000,000

9,673,000,000

Distance from the Earth (Km)

19,031,000,000

15,666,000,000

Distance from the Earth (Mi)

11,825,000,000

9,734,000,000

Total Distance Traveled Since Launch (Km)

25,936,000,000

24,903,000,000

Total Distance Traveled Since Launch (Mi)

16,116,000,000

15,474,000,000

Velocity Relative to Sun  (Km/sec)

17.034

15.419

Velocity Relative to Sun  (Mi/hr)

38,105

34,490

Velocity Relative to Earth  (Km/sec)

21.300

28.850

Velocity Relative to Earth  (Mi/hr)

47,646

64,534

Round Trip Light Time (hh:mm:ss)

35:14:54

29:01:38