In my case it is the SN on the DESC.Actually if I check the relocated chart for London (the energy there is something else to me), it does not change all that much, but gives me an ASC of 13 Sagittarius and DESC of 13 Gemini.
I have SN on 10 Gemini and KARMA on 16 Gemini, so the DESC would be on the exact midpoint there, on top of that a bunch of asteroids is gathering around there, too (Kaali for example, on 12.47 Gemini).
The MC would be 14 Libra conjunct my 13 degree APHRODITE. NOthing realy big, just some asteroids. lol
Antivertex on 28 Cap exactly conjunct ANUBIS on 28 Cap, which is interesting, as 13 Sag is a very Egyptian Sabian. lo
NO clue what or if it means anything at all though.
I have asteorid LOndon on 14 Scorpio (conjunct Siva and Moira), so on the MC/ASC-midpoint.