The IRIS-T Missile was developed by a German lead program in 2005. The IRIS-T has a passive weapon guidance system called Infrared Homing (Heat seeking) to hit its targets, the missile was designed to replace the Sidewinders used by many NATO member countries. It detonates on impact or can be calibrated to explode in a certain proximity to a target using active radar. It uses infrared light emission from a target to track and follow it.

One single IRIS-T Missile costs $455,000. It is rank four in the most expensive air-to-air guided missile in military related activities. The missile itself is 10.2 ft. and weighs 89 km. The missile range is 22 mi. and the speed is Mach 3.( Mach speed is when an object moves faster than the speed of sound.)

https://www.airforce-technology.com/projects/iris-t-air-air-guided-missile-germany/

http://www.military-today.com/missiles/iris_t.htm

https://www.flightglobal.com/picture-saab-gripen-fires-first-iris-t-air-to-air-missile/74306.article