Voyager Mission Operations Status Report # 2013-04-05,  Week Ending  April 5, 2013

 

Command Transmission & Verification Operations

 

Voyager 1 command operations consisted of the uplink of a Command Loss Timer Reset, CCSL A087 and AHELIO SID MROs on 04/02 [DOY 092/2330z].  The spacecraft received all commands sent and the CCSL and SID MROs were verified.

 

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 74.6 hours of DSN scheduled support for Voyager 1 of which 48.0 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.  A second frame of GS-4 data was recorded on March 29.  The EDR backlog is 2 days.

 

Voyager 2 Data Processing and Operations:

 

There were 38.5 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 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 a PMPCAL on 4/2 (DOY 092).

 

PROPELLANT/POWER CONSUMABLES STATUS AS OF THIS REPORT

 

 

Spacecraft

Consumption

One Week (Gm)

Propellant

Remaining (Kg)

Output

(Watts)

Margin

(Watts)

1

4.80

21.05

261.8

28

2

4.83

26.34

263.0

33

 

 

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

 

 

Voyager 1

Voyager 2

Distance from the Sun (Km)

18,527,000,000

15,158,000,000

Distance from the Sun (Mi)

11,512,000,000

9,419,000,000

Distance from the Earth (Km)

18,466,000,000

15,168,000,000

Distance from the Earth (Mi)

11,474,000,000

9,425,000,000

Total Distance Traveled Since Launch (Km)

24,976,000,000

23,977,000,000

Total Distance Traveled Since Launch (Mi)

15,519,000,000

14,898,000,000

Velocity Relative to Sun  (Km/sec)

17.040

15.430

Velocity Relative to Sun  (Mi/hr)

38,118

34,515

Velocity Relative to Earth  (Km/sec)

20.386

22.717

Velocity Relative to Earth  (Mi/hr)

45,602

50,815

Round Trip Light Time (hh:mm:ss)

34:12:04

28:06:18