Voyager Mission Operations Status Report # 2013-08-30  Week Ending  August 30, 2013

 

Command Transmission & Verification Operations

 

There were no command operations in support of Voyager 1 during the period.

 

Voyager 2 command operations consisted of the uplink of a Command Loss Timer Reset and CCSTIM C/F on 08/26 [DOY 238/1300z]. The spacecraft received all commands sent.

 

Sequence Generation Operations

 

 

Data Return Operations

 

Voyager 1 Data Processing and Operations:

 

There were 81.2 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 during the period.

 

There was one significant outage of 1.0 hours on 08/27 [DOY 239] due a red antenna at DSS-63 [DR M107496].

 

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 August 24.  The third frame of GS-4 data was recorded on August 29.  The EDR backlog is 2 days.

 

Voyager 2 Data Processing and Operations:

 

There were 60.8 hours of DSN scheduled support for Voyager 2 of which 31.8 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.  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.  Activity included turning on the A&C gyros on 8/29 (DOY 241).

 

PROPELLANT/POWER CONSUMABLES STATUS AS OF THIS REPORT

 

 

Spacecraft

Consumption

One Week (Gm)

Propellant

Remaining (Kg)

Output

(Watts)

Margin

(Watts)

1

4.34

20.15

260.2

26

2

4.67

26.13

261.4

13

 

 

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

 

 

Voyager 1

Voyager 2

Distance from the Sun (Km)

18,742,000,000

15,349,000,000

Distance from the Sun (Mi)

11,646,000,000

9,537,000,000

Distance from the Earth (Km)

18,724,000,000

15,265,000,000

Distance from the Earth (Mi)

11,635,000,000

9,485,000,000

Total Distance Traveled Since Launch (Km)

25,406,000,000

24,347,000,000

Total Distance Traveled Since Launch (Mi)

15,786,000,000

15,129,000,000

Velocity Relative to Sun  (Km/sec)

17.037

15.424

Velocity Relative to Sun  (Mi/hr)

38,111

34,503

Velocity Relative to Earth  (Km/sec)

44.217

39.078

Velocity Relative to Earth  (Mi/hr)

98,910

87,414

Round Trip Light Time (hh:mm:ss)

34:41:06

28:17:12