Skylane 182/RG Turbo Skylane/RG
Flight Crew Instrument; Flight Crew Private
Flight Crew Last 90 Days 25; Flight Crew Total 850; Flight Crew Type 350
Situational Awareness; Human-Machine Interface
Conflict NMAC; Deviation - Track / Heading All Types; Deviation / Discrepancy - Procedural Clearance
Air Traffic Control Issued New Clearance; Flight Crew Took Evasive Action; Flight Crew FLC complied w / Automation / Advisory; Flight Crew Requested ATC Assistance / Clarification
Human Factors; Procedure
We were IFR level at 10;000 ft. We received an alert on the Avidyne Traffic System; and also on Foreflight which was running on an iPad. I advised the controller that we had traffic showing at 9 o'clock near our altitude. She advised us that they were going to pass 1;000 ft below us at 9;000 ft. We showed the aircraft was still at 10;000 ft and getting very close (less than 1/2 mile). At that time we received an alert that showed the other aircraft was at our location and less than 100 ft below. We made an immediate 90 degree turn to the right (North) and climbed. As we were talking; another controller came on and said that the other aircraft was descending. We advised ATC of the diversion and returned to our assigned course when the traffic was past us.Upon landing; we were still not sure how close we were. We downloaded the ADS-B data from both aircraft and plotted them in Excel (we had the call sign from the traffic system and hearing ATC talk to them after). We were chilled to see just how close we had come. The ADSB data shows that the CJ2 began a descent; but then briefly leveled off at 10;000 ft (our altitude). Unfortunately this happened just as they were passing our location.
C182 pilot reported an NMAC with a CJ2.