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VMs: George of Trebizond's horoscope...
According to David Pingree (pp. 855-856 of Monfasani's "Collectanea
Trapezuntiana"), George of Trebizond's horoscope appears in his taken from
his "Brevis de antisciis" [Chicago, Newberry L., Case 93-2]
Monfasani quotes these figures given by Pingree:-
David Pingree George of Trebizond (?)
Saturn 19 Sco 55 R 21 Sco R
Jupiter 02 Gem 13 02 Gem
Mars 10 Ari 11 Ari
Sun 22 Ari 33 23/24 Ari
Venus 07 Tau 41 07 Tau
Mercury 27 Ari 20 Ari
Moon 01 Pis 30 00 Pis
Asc node 12 Cap 12 Cap
Ascendant 06 Cap (circa midnight)
Dr Pingree also notes that there are some computational confusions in the
passage, perhaps deliberately made by George for the sake of his thesis.
Claus Anders Owen Gingerich
Satu 20 Sco 55 20 Sco 19
Jupi 01 Gem 38 02 Gem 14
Mars 11 Ari 09 11 Ari 34
Sun 23 Ari 49 23 Ari 52
Venu 07 Tau 55 08 Tau 24
Merc 20 Ari 51 21 Ari 03
Moon 05 Pis 08 02 Pis 06
MC 29 Cap 57 -
Asc 17 Tau 10 -
This is going to take a bit of careful verification: I'll try to get a copy
of the actual document so that I can rework the calculations for myself (as
I'm not 100% convinced yet). Claus' calculations differ from the left
column, and Prof Owen Gingerich's Alfonsine tables differ from the right
column, so we have multiple data-sources we'll need to co-evaluate carefully.
I suspect that when Dr Pingree quotes the time as being "circa midnight",
he *may well* be referring to midnight GMT, not midnight local time.
:-( I'll email him (I believe he's retired, but he might be interested in
clarifying this a little).
George was also extremely pro-Ptolemy and anti-Arab astrologers: for more
on the contents, look at Thorndike: Magic 4: 395-396. "Antisciis" were the
opposite signs of the zodiac, which George felt had been somewhat sidelined
by his contemporary astrologers.
Incidentally, George was also associated with George Amiroutzes in
Constantinople in 1465-1466, which may prove to be another interesting
Cheers, .....Nick Pelling.....
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