From David Herald:
The diameter of Erigone as determined by various infrared satellite missions are:
IRAS – diamalb 72.63 ±5.7 km
Akura- acua 72.15 ±0.95 km
WISE MBA-Pass1 81.579 ±3.062 km
There is no corroborating data from asteroidal occultations. Only one occultation by Erigone has ever been observed – by H Tomioka in Japan, last November. Given the large uncertainties with the event times for that observation, all that can be stated is that that the observation was consistent with a diameter of the order of 70km.