determining which are the ORs a Tor circuit is using

[Sambuddho Chakravarty <sc2516@xxxxxxxxxxxx>]

Hello All
 I have a general question. I am using the default torrc (without
specifying which ORs to select and letting the client determine the
"best" ones for itself). Is there a way to detect which are the ORs the
client picks up for the entry , middleman and exit nodes (rather than
hacking into the source code of the tor client). I am using a rather
dated version of the client - 0.1.2.18.

Thanks
Sambuddho