Eddy wrote:I don't know if there is an online conversion calculation from ecliptical to equatorial on the internet.

There is some good stuff here:
http://www.antonblog.net/tools/

Martin Gansten wrote:

Eddy wrote:I don't know if there is an online conversion calculation from ecliptical to equatorial on the internet.

There is some good stuff here:
http://www.antonblog.net/tools/

These look very useful Martin. Especially for calculating directions, houses etc.

I simply forgot that the website I use to post planetary postions also notes the equatorial coordinates. http://www.ephemeris.com/

for example this moment:

Date/Time: 2009.07.23 10:06:18 UTC (GMT - Delta T), JD = 2455035.921053
Sidereal Time: 06:11:26, Delta T = 69.6 seconds
Geocentric positions

Phase of Moon: 0.052 (0.000=New; 0.250=First 1/4; 0.500=Full; 0.750=Last 1/4)

Planet Longitude Latitude Right Asc. Declination
Sun 00 Leo 41'49" - 0?00'00" 08:11:37 20?00'04"
Moon 19 Leo 17'07" - 1?44'05" 09:24:36 13?23'23"
Moon's Node 00 Aqr 12'49"R 0?00'00" 20:09:37 -20?06'18"
Apogee 22 Cap 30'46"R - 0?42'42" 19:37:45 -22?15'40"
Mercury 11 Leo 01'36" 1?46'53" 08:55:59 19?10'32"
Venus 20 Gem 07'46" - 2?02'25" 05:17:42 21?02'14"
Mars 07 Gem 52'34" - 0?24'26" 04:24:41 21?13'14"
Jupiter 24 Aqr 48'55"R - 1?01'12" 21:49:49 -14?12'41"
Saturn 18 Vir 29'15" 2?00'04" 11:20:49 6?23'41"
Uranus 26 Psc 25'50"R - 0?47'00" 23:48:09 - 2?08'17"
Neptune 25 Aqr 44'28"R - 0?24'41" 21:52:34 -13?19'36"
Pluto 01 Cap 15'13"R 5?41'08" 18:05:14 -17?44'53"
Chiron 24 Aqr 52'17"R 6?44'03" 21:39:35 - 6?52'33"
Quaoar 18 Sgr 31'16"R 7?39'54" 17:12:48 -15?18'19"
Sedna 21 Tau 53'02" -11?51'35" 03:30:08 6?45'38"
Sgr A*/GalCtr 26 Sgr 59'40" - 5?36'33" 17:46:19 -29?00'46"

Hallo,

As the topic is how the solar return should be calculated with or without precession, I found a very good example in the comments to Paulus Alexandrinus by Olympiodorus ( VI C.E.) a.k.a Heliodorus, which shows unequivocally that during the Helinistic Era the astrologers have used solar return WITHOUT PRECESSION. Below you can see the cover page of the critical edition of the Olympiodorus' comments ( Heliodori, ut dicitur, in Paulum Alexandrinum, ed Emelie Boer. Leipzig:Teubner,1962):
Olympiodorus in Chapter 30 writes ( Late Classical Astrology:Paulus Alexandrinus and Olympiodorus, translated by Dorian Gieseler Greenbaum, ARHAT, 2001, p.132) :


"Chapter 30. Concerning a Year

For example:let someone have Leo as the Horoskopus, and let him be 27 years old .We want to know how the 27th year will pass, whether good or base.We provide the first year to the Horoskopus, that is to say, to Leo, the second to the post-ascension to the Horoskopus, that is, to Virgo, the third to Libra and so until the twelve years[have] the twelve zodia.Again the 13th year we give to the Horoskopus, Leo, the 14th to [Virgo], and so on in order up to the 24th year.The 25th year we provide again to the Horoskopus , Leo, the 26th to Virgo, the 27th to Libra, and we say that the last belongs to Aphrodite, since Aphrodite is the master of Libra."

Here Olympiodorus explains how to calculate the Lord of the Year by the yearly profection of the Natal Ascendant.

On p.168 of Olympiodorus' translation by Dorian Greenbaum the two charts from the above example are published- the natal ( for the year 537 ) and the solar chart ( for the year 564 ) for the his 27th year:

As we can see from the chart graphics, the Sun has the same positions both in the natal as welll as in the solar chart.

Sorry, but D.Greenbaum do not give the datas of the original charts, but calculations made by a modern astrological program.
I will try to take the datas from the original book(Heliodori, ut dicitur, in Paulum Alexandrinum, Leipzig,1962) and to post them here as soon as possible.