OVERVIEW: The AGM-158B JASSM-ER (Joint Air-to-Surface Standoff Missile) is an autonomous, long range, low observable, air-launched, turbofan-powered INS/GPS guided cruise missile with an IIR seeker.  It has an 432 kg penetrator warhead.

DETAILS:

 The AGM-158B JASSM-ER is designed to destroy high-value, well-defended, fixed and re-locatable targets at extended ranges.   It uses a GPS/Inertial Navigation System (INS) for mid-course guidance and an IIR seeker for terminal guidance.    The missile cruises at either a high-level or low-level (500 meter) cruise altitude, followed by a steep dive into the target.  The targeting system uses 3-D models of the intended target, coupled with GPS co-ordinates.  Up to eight different targets can be stored in each missile.


Specifications: 
Weight: 	1023 kg 
Length: 	4.26 m 
Diameter: 	0.55 m 
Wingspan: 	2.4 m 
Range:		10-540 nm (19-1000 km)
Accuracy:	2.4 m (approx.) 		

NOTES: IOC ???.


SOURCE: Jane's Weapon Systems Vol 1: Air Launched: AGM-158A JASSM (Joint Air-to-Surface Standoff Missile), AGM-158B, JASSSM-ER and LRASM", 01 December 2013; AGM-158 JASSM (Joint Air-to-Surface Standoff Missile). n.d. https://www.airforce-technology.com/projects/agm-158-jassm-standoff-missile/ ; AGM-158A JASSM. n.d. http://www.deagel.com/Offensive-Weapons/AGM-158A-JASSM_a001073001.aspx ; 
Air Force Armament Museum Foundation. n.d. http://www.afarmamentmuseum.com/details-agm158.html.

