
If using harmonic proportionate orb based on Conjunction having a maximum orb of 15 degrees, the maximum orb is 1 degree, 53 minutes. The TriOctile ( 135°) is the 3/8th Harmonic aspect, and is also known as SesquiSquare.


The BiOctile ( 90°) is the 2/8th Harmonic aspect, and it is also known as the 1/4th Harmonic aspect Square. Octile ( 45°) is the 1/8th Harmonic aspect, and it is also known as the SemiSquare. If using harmonic proportionate orb based on The 1st Harmonic Aspect Conjunction (0 °) having a maximum orb of 15 degrees, the maximum orb for 7th Harmonic aspects is 2 degrees, 8 minutes.

TriSeptile (1 54☁7'08'') is the 3/7th Harmonic aspect. Septile (51☂5'42'') is the 1/7th Harmonic aspect, BiSeptile (1 02★1'25'') is the 2/7th Harmonic aspect. I don't know why Noel Tyl claimed that Quindecile is referring to the 24th Harmonic and the Quindecile aspect is the 11/24th Harmonic aspect (1 65°) and not the 1/15th Harmonic aspect (24 °). I can't buy into what Noel Tyl had been teaching about what's a Quindecile. Maybe not so favourable, then? Or maybe more research is needed. This is a moot point, as yet undetermined in practice, though Tyl says that in some 900 charts it indicates passionate obsession, unrelenting motivation, determination, upheaval, disruption, even separation. He says the 24th harmonic is what we are talking about, rather than the 24° interval. Influential contemporary astrologer Noel Tyl calls the 165° aspect quindecile, because he says that all the other 15° increments are already named, except the 105° interval which is insignificant.

Quindecim means 15 in Latin and 24x15=360, the number of degrees in a circle, and so the zodiac. If using harmonic proportionate orb based on Conjunction having a maximum orb of 15 degrees, the 15th Harmonic aspects have a maximum orb of 1 degree.Ī minor 24 degree aspect. 15th Harmonic Aspect will appear as Conjunction in 15th Harmonic Chart, Trine in 5th Harmonic Chart, and 5th Harmonic Aspect in 3rd Harmonic Chart.
