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NASA Voyager Mission Operations Status Report Week Ending January 12, 2007

Status Report From: Jet Propulsion Laboratory
Posted: Tuesday, April 3, 2007

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Command Transmission & Verification Operations

Voyager 1 command operations consisted of the uplink of a command loss timer reset on 01/11 [DOY 011/0445z]. 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 0.5 Hz steps on 01/11 [DOY 011/0517z]. The commands were not radiated due to a transmitter failure at DSS-43 [DR C105459].

Sequence Generation Operations

Continue sequence development of CCSL B135.

Data Return Operations

Voyager 1 Data Processing and Operations:

There were 37.3 hours of DSN scheduled support for Voyager 1 of which 19.0 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 day 6. The EDR backlog is 2 days.

Voyager 2 Data Processing and Operations:

There were 54.5 hours of DSN scheduled support for Voyager 2 of which 10.8 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. The PRA receiver recovered from its' 98th POR event on January 12. 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 0n 1/9 (DOY 009).

PROPELLANT/POWER CONSUMABLES STATUS AS OF THIS REPORT

Spacecraft Consumption
One Week (Gm)
Propellant
Remaining (Kg)
Output
(Watts)
Margin
(Watts)
1 7.25 27.98 288.0 26
2 12.45 29.72 289.3 29

RANGE, VELOCITY AND ROUND TRIP LIGHT TIME AS OF 1/12/2007

Voyager 1 Voyager 2
Distance from the Sun (Km) 15,187,000,000 12,220,000,000
Distance from the Sun (Mi) 9,437,000,000 7,593,000,000
Distance from the Earth (Km) 15,283,000,000 12,346,000,000
Distance from the Earth (Mi) 9,496,000,000 7,671,000,000
Total Distance Traveled Since Launch (Km) 18,545,000,000 17,553,000,000
Total Distance Traveled Since Launch (Mi) 11,523,000,000 10,907,000,000
Velocity Relative to Sun (Km/sec) 17.136 15.576
Velocity Relative to Sun (Mi/hr) 38,331 34,843
Velocity Relative to Earth (Km/sec) 28.134 34.558
Velocity Relative to Earth (Mi/hr) 62,933 77,304
Round Trip Light Time (hh:mm:ss) 28:18:26 22:52:38

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