posted June 04, 2016 11:06 PM
They form a trine or conjunction by sign... but as far as I know, most modern tropical astrologers will only consider two planets to be in aspect in synastry if the degree of the orb is under 10 degrees (for conjunctions) and under 6 for most other aspects... for quincunxes and semi-sextiles we're looking at 2 degrees tops, and quintiles/noviles/septiles etc. we're looking for less. Anyway that was over-complicated.. if the Sun is in Pisces at, say, 10 degrees and the Moon is in Scorpio at 28 degrees, there is an 18 degree trine, and the orb is 18 degrees... much too wide.
With the conjunction of a luminary (or maybe Jupiter) to an angle (ascendant, descendant, midheaven, or imum coeli) I personally would possibly extend the orb over 10 degrees.
With trines we generally don't consider anything over 6 degrees--for me 5 degrees is pushing it--maximum intensity begins at 3 degrees and builds up to the exact aspect, which is most potent.
Sorry, that was all possibly more complicated than it needed to be.
The thing is that a trine by sign is still somewhat valid energetically, and many of us forget that and are so exacting with orbs that we miss important signatures and sympathies between charts due to the planets not being in orbit.
That said, the intensity of the trine or conjunction will be greatly increased if the orb is well within 10 degrees; I think many would not go above 5 degrees for any aspect in synastry, as a general rule. And a trine that is within 2 or 3 degrees is definitely most potent.
The connection is not totally negligible in your case, and will possibly be felt... Imagining an 18 degree trine, for convenience's sake, there will be a sense of sympathetic views or ways of being but not likely a very personal sense of a connection, if that makes sense... it won't seem anywhere near so intense as if the orb were 1 degree... more of a hint of sympathy and compatibility rather than a strong/irresistible current of energetic compatibility or sympathy.
Lindaland
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posted June 04, 2016 10:45 PM
and the best way to learn is by asking. I think there's a section on this site for beginners to learn called Brown Owl School but I've never really been there so don't know what to say about it. Maybe I'll waddle over some time. 
posted June 04, 2016 11:51 PM