Backdoor Trine Jupiter / Pluto

[Ben]

Greetings,
I am an astronomer who wandered over here from the sci.astro groups
and
am currently involved in a web development project to get some of my
number crunching online. I have noticed something that is
particularly
difficult to spot. I call it a backdoor aspect. Quincunx,
sesquiquadrate
and trine are more liable to fall into this situation where they are
quite
difficult to spot on a quick inspection.

For example: On Oct 1 Pluto was at 276.56 deg and Jupiter at 38.73.
That's about two degrees of orb on a "backdoor trine" calculated
around
through 0deg Aries. On Oct 18.756359 (18 09UT/ 2 09 EDT) their
respective
longitudes will be Pluto @ 276.663369 deg and Jupiter @ 36.663369deg.
Subtracting one finds they are 240 deg apart around through 180 deg
Libra
but exactly 120 deg separates them through 0 deg Aries. To my way
of
thinking 120 deg is a trine without respect to direction on the
ecliptic.

At any rate I'm trying to develop some formulas to make these aspects
stand out more easily and hope to have them online in the not too
distant future.
I've used the VSOP 87 system (for years) on an Excel 2007 workbook.

I'll stay in touch.

Best regards,
Ben

[Todd Carnes]

"Backdoor" is not the best choice of words here. In astrology aspects are either sinister and dexter.

Todd

[DJ]

Post by Todd Carnes
"Backdoor" is not the best choice of words here. In astrology aspects are either sinister and dexter.
Todd

sinister -or- dexter

yes, a trine is a trine; the leading planet may be faster or slower,
and it may form from the left or the right. This can change the
specific details of an interpretation, but it's still a trine (or
quincunx, sesquiquadrate, etc.).

[Ben]

Post by DJ

Post by Todd Carnes
"Backdoor" is not the best choice of words here. In astrology aspects are either sinister and dexter.
Todd

sinister -or- dexter
yes, a trine is a trine; the leading planet may be faster or slower,
and it may form from the left or the right. This can change the
specific details of an interpretation, but it's still a trine (or
quincunx, sesquiquadrate, etc.).

Thank you, gentlemen for your clarifications. I can see that a natal
chart
or any other reading ought to specify dexter or sinister in it's
printout.

I have in the past few days developed a table of formulas which make
these more difficult aspects much easier to spot and do so without
any negative longitudes or positions greater than 360 degrees. I
believe
that by employing the VLOOKUP / HLOOKUP functions in Excel
one can discover them effortlessly. Much coding here.

I am going to try to get this workbook online sometime in the near
future
and it will also give a very complete readout of transiting
midpoints. I'm
working on this project with an Astrologer and a Statistician, both
very
skilled, and am hoping to replicate some of the work done by Eysenck
and the Gauquelins back in the 1980's.

Any input from you good people will be greatly appreciated.

Thanks again,
Ben

[unknown]

Post by Ben

Post by DJ

Post by Todd Carnes
"Backdoor" is not the best choice of words here. In astrology aspects
are either sinister and dexter.
Todd

sinister -or- dexter
yes, a trine is a trine; the leading planet may be faster or slower,
and it may form from the left or the right. This can change the
specific details of an interpretation, but it's still a trine (or
quincunx, sesquiquadrate, etc.).

Thank you, gentlemen for your clarifications. I can see that a natal
chart
or any other reading ought to specify dexter or sinister in it's
printout.
I have in the past few days developed a table of formulas which make
these more difficult aspects much easier to spot and do so without
any negative longitudes or positions greater than 360 degrees. I
believe
that by employing the VLOOKUP / HLOOKUP functions in Excel
one can discover them effortlessly. Much coding here.
I am going to try to get this workbook online sometime in the near
future
and it will also give a very complete readout of transiting
midpoints. I'm
working on this project with an Astrologer and a Statistician, both
very
skilled, and am hoping to replicate some of the work done by Eysenck
and the Gauquelins back in the 1980's.

Would just like to say good luck. I've always been into the statistical
research myself, so I'll be keeping a close eye on this.