Pete,
For starters, orbital welding utililizes "mechanized" process control, this is not semi-automatic. Autogenous welds do not use any filler material.
The process designation is GTAW-P.
Some of the other information would include (but not limited to):
Base metal specification(s), thickness, diameter.
Electrode size/diameter, AWS specification and clasification e.g., AWS A5.12, EWTh-1.
Arc travel speed or weld time.
Gas composition and flow rate.
Peak amperage/voltage, background amperage/voltage, pulse frequency, pulse width.
Current type and polarity.
Any post weld heat treatment, etc.

This is some of the possible information that should be noted in the Welder Performance Qualification Record (certs).
Are you an ACWI, CWI or SCWI?

Have Fun.