Voyager Mission Operations Status Report # 2013-11-01  Week Ending  November 1, 2013

 

Command Transmission & Verification Operations

 

Voyager 1 command operations consisted of the uplink of a Command Loss Timer Reset on 10/28 [DOY 301/1800z].  The spacecraft received the command.

 

Voyager 2 command operations consisted of the uplink of seven bracketed Command Loss Timer Resets sent on five-minute centers using 1.0 Hz steps on 10/31 [DOY 304/1428z].  The spacecraft received one of the seven commands sent.

 

Sequence Generation Operations

 

Complete sequence development of CCSL B162.

 

Data Return Operations

 

Voyager 1 Data Processing and Operations:

 

There were 54.4 hours of DSN scheduled support for Voyager 1 of which 52.4 hours were large aperture coverage. There were no real-time or schedule support changes made during the period.

 

There was one significant outage of 1.4 hours on 11/01 [DOY 305] due to degraded data caused by a Red Maser at DSS-25 in the DSS-14/25 Array  [DR G114366].

 

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 October 27.  The third frame of GS-4 data was recorded on November 1.  The EDR backlog is 1 days.

 

Voyager 2 Data Processing and Operations:

 

There were 57.3 hours of DSN scheduled support for Voyager 2 of which 29.8 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.  Activities included an ASCAL on 10/29 (DOY 302) and a MAGROL on 11/1 (DOY 305).

 

Voyager 2 performance was nominal during this report period.  Activities included switching to X-Band high power, MAGROL, Gyros OFF, and a switch back to X-Band low power on 10/29 & 30 (DOY 303).

 

PROPELLANT/POWER CONSUMABLES STATUS AS OF THIS REPORT

 

 

Spacecraft

Consumption

One Week (Gm)

Propellant

Remaining (Kg)

Output

(Watts)

Margin

(Watts)

1

6.27*

20.06

259.5

11

2

54.00**

25.98

260.7

31

                                                          *ASCAL 2013-302                             **MAGROL 2013-303

 

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

 

 

Voyager 1

Voyager 2

Distance from the Sun (Km)

18,835,000,000

15,430,000,000

Distance from the Sun (Mi)

11,703,000,000

9,588,000,000

Distance from the Earth (Km)

18,933,000,000

15,471,000,000

Distance from the Earth (Mi)

11,764,000,000

9,613,000,000

Total Distance Traveled Since Launch (Km)

25,645,000,000

24,571,000,000

Total Distance Traveled Since Launch (Mi)

15,935,000,000

15,268,000,000

Velocity Relative to Sun  (Km/sec)

17.036

15.422

Velocity Relative to Sun  (Mi/hr)

38,108

34,498

Velocity Relative to Earth  (Km/sec)

41.818

41.718

Velocity Relative to Earth  (Mi/hr)

93,543

93,320

Round Trip Light Time (hh:mm:ss)

28:40:10

28:40:10