Voyager Mission Operations Status Report # 2009-03-20, Week Ending March 20, 2009
Command Transmission & Verification Operations
Voyager 1 command operations consisted of the uplink of a Command Loss Timer Reset on 03/17 [DOY 076/0100z]. The spacecraft received the command.
There were no command operations in support of Voyager 2 during the period due to the extended downtime of DSS-43.
Sequence Generation Operations
Continue sequence development of CCSL A071.
Data Return Operations
Voyager 1 Data Processing and Operations:
There were70.0 hours of DSN scheduled support for Voyager 1 of which 26.3 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 14. The EDR backlog is 2 days.
Voyager 2 Data Processing and Operations:
There were 42.3 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 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. Activities included a switch to X-Band high power and an ASCAL on 3/16 [DOY 075] and a MAGROL followed by gyros OFF and a switch back to X-Band low power on 3/19 [DOY 078/079].
PROPELLANT/POWER CONSUMABLES STATUS AS OF THIS REPORT
| Spacecraft | Consumption One Week (Gm) | Propellant Remaining (Kg) | Output (Watts) | Margin (Watts) |
| 1 | 4.49 | 26.74 | 478.4 | 30 |
| 2 | 7.23* | 28.49 | 279.9 | 39 |
*ASCAL 09-075/21:05
RANGE, VELOCITY AND ROUND TRIP LIGHT TIME AS OF 3/20/2009
| | Voyager 1 | Voyager 2 |
| Distance from the Sun (Km) | 16,360,000,000 | 13,249,000,000 |
| Distance from the Sun (Mi) | 10,165,000,000 | 8,232,000,000 |
| Distance from the Earth (Km) | 16,328,000,000 | 13,292,000,000 |
| Distance from the Earth (Mi) | 10,146,000,000 | 8,259,000,000 |
| Total Distance Traveled Since Launch (Km) | 20,766,000,000 | 19,797,000,000 |
| Total Distance Traveled Since Launch (Mi) | 12,903,000,000 | 12,301,000,000 |
| Velocity Relative to Sun (Km/sec) | 17.089 | 15.514 |
| Velocity Relative to Sun (Mi/hr) | 38,226 | 34,703 |
| Velocity Relative to Earth (Km/sec) | 18.994 | 23.931 |
| Velocity Relative to Earth (Mi/hr) | 42,487 | 53,531 |
| Round Trip Light Time (hh:mm:ss) | 30:14:34 | 24:37:38 |
0 comments:
Post a Comment