Voyager Mission Operations Status Report # 2013-05-03, Week Ending May 3, 2013

 

Command Transmission & Verification Operations

 

Voyager 1 command operations consisted of the uplink of a Command Loss Timer Reset on 04/29 [DOY 119/2225z]. 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

 

 

Data Return Operations

 

Voyager 1 Data Processing and Operations:

 

There were 111.8 hours of DSN scheduled support for Voyager 1 of which 59.1 hours were large aperture coverage. There were no real-time or schedule support changes made during the period.

 

There was one significant outage of 1.6 hours on 04/29 [DOY 119] due to snow at DSS-63 [DR M107277].

 

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 May 3. The EDR backlog is 2 days.

 

Voyager 2 Data Processing and Operations:

 

There were 63.3 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 was one significant outage of 1.2 hours on 04/29 [DOY 119] due to rain at DSS-45 [DR C109349].

 

 

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 an ASCAL and two LECP Observations on 4/30 (DOY 120/121) and two LECP Observations on 5/1 (DOY 121/122), one LECP Observation on 5/2 (DOY 122/123), and a MAGROL on 5/3 (DOY 123).

 

Voyager 2 performance was nominal during this report period. Activity included a PMPCAL on 4/30 (DOY 120).

 

PROPELLANT/POWER CONSUMABLES STATUS AS OF THIS REPORT

 

 

Spacecraft

Consumption

One Week (Gm)

Propellant

Remaining (Kg)

Output

(Watts)

Margin

(Watts)

1

112.65*

20.62

261.4

13

2

5.35

26.27

262.7

33

*5 LECP Observations 2013-121 122 & MAGROL 2013-123

 

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

 

 

Voyager 1

Voyager 2

Distance from the Sun (Km)

18,568,000,000

15,195,000,000

Distance from the Sun (Mi)

11,537,000,000

9,441,000,000

Distance from the Earth (Km)

18,464,000,000

15,147,000,000

Distance from the Earth (Mi)

11,473,000,000

9,412,000,000

Total Distance Traveled Since Launch (Km)

25,030,000,000

24,031,000,000

Total Distance Traveled Since Launch (Mi)

15,553,000,000

14,932,000,000

Velocity Relative to Sun (Km/sec)

17.040

15.429

Velocity Relative to Sun (Mi/hr)

38,116

34,513

Velocity Relative to Earth (Km/sec)

25.294

22.934

Velocity Relative to Earth (Mi/hr)

56,581

51,302

Round Trip Light Time (hh:mm:ss)

34:11:56

28:03:54