Flight Crew Air Transport Pilot (ATP)
Distraction
Conflict NMAC; Deviation / Discrepancy - Procedural FAR; Deviation / Discrepancy - Procedural Published Material / Policy
General None Reported / Taken
Environment - Non Weather Related; Human Factors
While descending through 19;200 feet MSL on the ORW7 arrival into BOS; I saw what I thought was a balloon coming towards our aircraft. A few seconds later as we flew directly under it; missing it by about 10-20 feet; we noticed it was a drone. It was directly above my windshield (the FO side) and probably about 2 feet wide. We were approx 24NM west of PVD VOR.  I immediately notified BOS center and they proceeded to vector other aircraft away from that area. BOS center gave us their number to call them on the ground for further information. I called and spoke with BOS center managent and provided the information [they] requested in addition to my contact information.
We were flying the Norwich 7 (ORW7) arrival into BOS and we were approximately 24 miles west of PVD on the arrival near the OUTTT intersection. I was the Pilot Flying but was heads down at the moment while I was giving a PA announcement to the passengers. As we were passing through FL192 in the descent I looked up and saw what appeared to be a black drone directly in front of us at the same altitude. I saw the drone out of the FO's windshield and it quickly passed over the top of us. It appeared to be 18-24 inch in diameter; oval shaped; solid black in color; and I believe it missed our aircraft by about 20-50 feet.The FO was certain it was a drone. She reported to me that she saw what appeared to be a propeller on the top of it and something else hanging below it (possibly a camera). We reported this to BOS ARTCC who immediately began to vector other aircraft away from that area. The FO had a much better and longer visual look at the object and was certain it was a drone. BOS ARTCC asked us to call them on the phone after landing which we did. They said a report would be filed on their end. I also reported this to the Chief Pilot. Possibly a high altitude drone.
ERJ-190 flight crew reported a NMAC with a Drone during the descent phase of flight.