It is believed that the Jericho III (YA-4) is a nuclear-armed ICBM that entered service in 2011. The Jericho III is believed to have two or three-stages, using solid propellant and having a payload of 1,000 to 1,300 kg. The payload could be a single 750 kg (150–400 kiloton) nuclear warhead or two or three low-yield MIRV warheads. It has an estimated launch weight of 30,000 kg and a length of 15.5 m with a width of 1.56 m. It may be similar to an upgraded and re-designed Shavit space launch vehicle, produced by Israel Aerospace Industries. It probably has longer first and second-stage motors. It is estimated by missilethreat.com that it has a range of 4,800 to 6,500 km (2,982 to 4,038 miles), though a 2004 missile proliferation survey by the Congressional Research Service put its possible maximum range at 11,500 km (missile range is inversely proportional to payload mass).