253 Mathilde
Other than being host to an unexplained phenomenon in 2013, asteroid 253 Mathilde is unremarkable. As of 2014, it had not yet been settled.
The Battle of 253 Mathilde
There are many Myths of Fenspace. At least one report about the alleged ghost ship USS Eldridge is so well-documented that it threatens to push the Eldridge out of "myth" status and into "unexplained phenomena" territory: the Battle of 253 Mathilde.
During the Battle of 253 Mathilde in March 2013, the Eldridge appeared unexpectedly and according to witnesses rammed the Boskonian warship Dr. Crippen, effectively slicing it in half, Curacoa-style, without even slowing down. Blurry video and inconclusive sensor traces of the Eldridge were captured by several of the beleaguered OGJ ships involved in the battle before they took advantage of the Crippen's damage. Naturally, by the time the battle was over, the Eldridge had vanished.