Air carrier captain reported an near midair collision during departure from ord airport.

Attributes
ACN	1701891
Time
Date	201911
Local Time Of Day	0601-1200
Place
Locale Reference	ORD.Airport
State Reference	IL
Environment
Flight Conditions	VMC
Light	Daylight
Aircraft 1
Make Model Name	Commercial Fixed Wing
Operating Under FAR Part	Part 121
Flight Phase	Initial Climb Takeoff
Flight Plan	IFR
Aircraft 2
Make Model Name	Commercial Fixed Wing
Operating Under FAR Part	Part 121
Flight Phase	Takeoff Initial Climb
Flight Plan	IFR
Person 1
Function	Captain Pilot Not Flying
Qualification	Flight Crew Multiengine Flight Crew Air Transport Pilot (ATP) Flight Crew Instrument
Events
Anomaly	ATC Issue All Types Conflict NMAC

Narrative:

I was pm (pilot monitoring) on flight. It was daylight VMC. We were cleared to takeoff from runway 10L and fly runway heading to 5;000 feet. At 1;000 feet we got an RA. The TCAS showed a yellow circle with -02 next to it. The aircraft was almost right below us. First officer increased our climb rate. ATC told us to turn right to a 180 heading. The RA went away and we continued the flight. ATC later said aircraft Y took off on runway 9R and was instructed to turn to a heading of 330; but turned into us on a 230 heading. The rest of the flight was uneventful. Aircraft Y turned the wrong direction on their initial climb.

Original NASA ASRS Text

Title: Air carrier Captain reported an NMAC during departure from ORD airport.

Narrative: I was PM (Pilot Monitoring) on flight. It was daylight VMC. We were cleared to takeoff from Runway 10L and fly runway heading to 5;000 feet. At 1;000 feet we got an RA. The TCAS showed a yellow circle with -02 next to it. The aircraft was almost right below us. First Officer increased our climb rate. ATC told us to turn right to a 180 heading. The RA went away and we continued the flight. ATC later said Aircraft Y took off on Runway 9R and was instructed to turn to a heading of 330; but turned into us on a 230 heading. The rest of the flight was uneventful. Aircraft Y turned the wrong direction on their initial climb.

Data retrieved from NASA's ASRS site and automatically converted to unabbreviated mixed upper/lowercase text. This report is for informational purposes with no guarantee of accuracy. See NASA's ASRS site for official report.