The crew was in excellent condition, and another major step toward the first lunar landing had been accomplished.
2-line elements determined after the orbit correction it was possible to calculate accurate passes of the complex again.
On 25.12.1998 the cosmonauts asked for the new Apogee and Perigee of Mir. TsUP said that these values were 372 and
361 KM. Possibly the last 2-lines will only be valid for a short period for there might follow a 2nd correction on 26 or 28.12.1998. Radio traffic and radio observations did not confirm that there was a correction on 26.12 so let us wait and hear if this will take place on 28.12.1998.
A high ranking official in Korolyov assured me that the reboost of the Mir-complex has nothing to do with an eventual
prolongation of the exploitation after June 1999, but was executed for ballistic reasons. The rumours about plans to extend
Mir's operational life are unfounded and the plan to bring Mir back in the earth's atmosphere after June 1999
is still fully in force.
The undocking of this freighter from Mir is scheduled for 4.02.1999. After some autonomous orbits Progress-M40 will jettison and deploy a solar reflector for the execution of the Znamya 2.5 experiment.
Chris v.d. Berg, NL-9165/A-UK3202.
After wakeup and before breakfast, FE-2 Dan Tani again accessed the SLEEP experiment (Sleep-Wake Actigraphy & Light Exposure during Spaceflight) software for data logging and completing questionnaire entries in the experiment's laptop session file on the HRF-1 laptop for later downlink. (To monitor the crewmembers' sleep/wake patterns and light exposure, Dan and Peggy wear a special Actiwatch device which measures the light levels encountered by him as well as his patterns of sleep and activity throughout the Expedition. The log entries are done within 15 minutes of final awakening for seven consecutive days, as part of the crew's discretionary 'job jar' task list.) Additional Details: ISS On-Orbit Status 12/27/07.