The Javelin was a heavy cruiser and battlecruiser weight anti-ship missile of the Solarian League Navy.
The Javelin had a maximum acceleration of 47,600 gravities with a powered endurance of three minutes and a range of eight million kilometers at that setting, though the standard effective powered envelope at launch was better than twelve million kilometers, but the Mark 16 dual drive missile of the Royal Manticoran Navy possessed over three times that range. (SI3)
Like other impeller drive missiles, the Javelin had an auto destruct abort code. (HH14)
In the 1920s PD, it replaced the Pilum in Solarian service. (SI2)