Over the past week, International Space Station flight controllers completed the first round of deep-cycling the six batteries housed on board Zarya, individually fully discharging and then recharging them. A second round of this routine housekeeping procedure to optimize battery performance is under way.
On December 28, flight controllers successfully commanded the station to an orientation to maximize power generation. The command was part of a scheduled test to ensure the vehicle could be commanded to a power-friendly attitude in the event of low battery levels. Mission managers report that test was fully successful.
With no major activities or checkouts planned over the past week, flight controllers in Houston continue to monitor station systems, reporting that all operations are proceeding very smoothly.
The International Space Station is in an orbit with a high point of 256 statute miles and a low point of 248 statute miles, circling Earth once every 92 minutes.
Current opportunities available for locations worldwide to view the station from the ground as it passes overhead can be found on the internet at
The next International Space Station status report is planned to be issued on Wednesday, January 6, 1999.
Note: For further information, please contact the NASA Public Affairs Office at the Johnson Space Center, Houston, Texas, 281-483-5111.