B737 Next Generation Undifferentiated
Flight Crew Air Transport Pilot (ATP); Flight Crew Instrument; Flight Crew Multiengine
Flight Crew Last 90 Days 237.2; Flight Crew Total 2220.07; Flight Crew Type 2220.07
Distraction; Situational Awareness
Conflict NMAC
Human Factors; Environment - Non Weather Related; Aircraft
Upon departure from ZZZ; observed small quad-copter type drone colored red and black pass overhead our aircraft while climbing through approximately 900 feet MSL.  Estimated  within 50 feet directly over our departure path.  Reported the sighting immediately to Tower before switching to departure frequency.  Remainder of flight uneventful.
An air carrier pilot reported a NMAC with a drone.