Author Topic: Right Ascension of ascendant  (Read 1623 times)

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markul

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Right Ascension of ascendant
« on: December 09, 2023, 10:05:31 PM »
Hi,
I've written an AB program that exports the 6 points calculated by GETPLANET for the planet numbers 0-15 as shown in the AB Help.

k = 0;
    for (k < PLANETS)
      {
      getplanet(k,0,planpoints);   ` gets all the points into planpoints
         next=0; for (next < 6)
            {
            gridsetnum(next + j, i + 1, planpoints[next],2);
            }
         j = j + 6;
       }

Checking the results against Solar Fire it appears to be accurate for most points.  However, the Right Ascension of the ascendant is always 0.0.   

Is this a bug?  can it be fixed?

thanks!
Mark

Jean

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Re: Right Ascension of ascendant
« Reply #1 on: December 09, 2023, 10:29:00 PM »
There was some problem with RA but i can't remember at the moment.
In horoscope - data i don't give a value for RA.
I will look at it tomorrow.

ps, great that you are using ab.
Greetings from Groningen Netherlands <)))><.`.><(((>

Jean

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Re: Right Ascension of ascendant
« Reply #2 on: December 10, 2023, 01:23:58 PM »
I made getplanet() set RA to 0 for the ascendant. Try an update.
Greetings from Groningen Netherlands <)))><.`.><(((>

markul

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Re: Right Ascension of ascendant
« Reply #3 on: December 10, 2023, 02:49:56 PM »
Hi Jean,

Sorry if I wasn't clear.  It should NOT set the RA for the ascendant to 0.  That is what it was doing before (and still is with this most current update).   Depending on the birth latitude, etc., it should be within a few degrees of the ascendant longitude. 

The other planets RAs are correct, including the MC.

Can you fix the ascendant RA? 

thanks,
Mark

Jean

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Re: Right Ascension of ascendant
« Reply #4 on: December 10, 2023, 03:08:13 PM »
Oops, sorry i misunderstood you.
Unfortunately i don't know how to get at the RA of the ascendant, it's not documented in the swiss ephemeris as far as i can see.
Will ask around.
Greetings from Groningen Netherlands <)))><.`.><(((>

markul

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Re: Right Ascension of ascendant
« Reply #5 on: December 10, 2023, 04:55:21 PM »
Thanks, I appreciate it (and really appreciate PlanetDance!)

Mark

markul

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Re: Right Ascension of ascendant
« Reply #6 on: December 10, 2023, 05:38:59 PM »
If this helps, here's the output from SolarFire for three charts from the PlanetDance.db that shows the Longitude, Travel, Latitude, Rt.Asc., Decl., Azi(0N) and Alti. for planets, asc, and MC.

Cheers,
Mark

Allen, Woody - Natal Chart
 DeltaT = +24s; ET = 3:55:24 am Dec 2 1935; JDE = 2428138.663473
 ST(0) = 08:35:16; LST = 03:39:56; Ob = 2326'51''; Eq.Time = +10m55s
 ACD(0h) = Oct 3 1935; ACD(12h) = Apr 3 1936
CHART POINTS
 Point   Longitude      Travel      Latitude       Rt.Asc.        Decl.      Azi(0N)         Alti.
 Mon   24Aq06'04''       +1356'      +0324'      32515'      -1016'      26201'      -0629'
 Sun   09Sg02'42''       +0100'      +0000'      24720'      -2148'      32737'      -6812'
 Mer   04Sg30'58''       +0134'      -0016'      24229'      -2119'      33946'      -6923'
 Ven   22Li53'59''       +0105'      +0211'      20200'      -0652'      04953'      -4502'
 Mar   26Cp06'26''       +46'23''      -0122'      29823'      -2216'      26857'      -3408'
 Jup   05Sg07'19''       +13'24''      +0038'      24318'      -2031'      33822'      -6824'
 Sat   04Pi01'05''       +02'30''      -0148'      33634'      -1143'      25335'      +0053'
 Ura   02Ta11'08'' R      -01'49''      -0030'      03011'      +1145'      22347'      +5335'
 Nep   16Vi41'15''       +00'36''      +0058'      16808'      +0609'      06945'      -1300'
 Plu   27Cn10'48'' R      -00'48''      +0205'      11940'      +2246'      08738'      +3327'
 Asc   02Vi22'29''       +28252'      +0000'      15421'      +1037'      07551'      -0000'
 MC   27Ta16'02''       +34923'      +0000'      05458'      +1933'      18000'      +6837'

 Allman, Gregg - Natal Chart
 DeltaT = +28s; ET = 9:39:28 pm Dec 8 1947; JDE = 2432528.402410
 ST(0) = 02:46:12; LST = 20:59:04; Ob = 2326'45''; Eq.Time = +8m10s
 ACD(0h) = Jan 13 1948; ACD(12h) = Jul 14 1948

CHART POINTS
 Point   Longitude      Travel      Latitude       Rt.Asc.        Decl.      Azi(0N)         Alti.
 Mon   03Sc55'04''       +1256'      +0145'      21216'      -1110'      26807'      -1636'
 Sun   15Sg57'41''       +0100'      +0000'      25445'      -2242'      23351'      +0818'
 Mer   02Sg04'51''       +0130'      +0044'      24008'      -1950'      24504'      +0003'
 Ven   10Cp14'10''       +0114'      -0123'      28115'      -2426'      21244'      +2137'
 Mar   02Vi27'59''       +18'24''      +0233'      15522'      +1258'      33430'      -3708'
 Jup   10Sg02'37''       +13'26''      +0034'      24829'      -2123'      23849'      +0459'
 Sat   22Le39'29'' R      -00'29''      +0103'      14521'      +1457'      34659'      -3753'
 Ura   24Ge28'51'' R      -02'31''      +0008'      08358'      +2328'      04657'      -1328'
 Nep   12Li36'17''       +01'13''      +0130'      19211'      -0335'      28735'      -2805'
 Plu   14Le50'35'' R      -00'36''      +0713'      13936'      +2317'      35450'      -3022'
 Asc   02Ge53'31''       +41001'      +0000'      06050'      +2044'      06358'      +0000'
 MC   12Aq18'10''       +35923'      +0000'      31446'      -1706'      18000'      +3643'

 Alistair Crowley - Natal Chart
 DeltaT = -2s; ET = 11:29:58 pm Oct 12 1875 NS; JDE = 2406174.479149
 ST(0) = 00:54:30; LST = 00:48:22; Ob = 2327'19''; Eq.Time = +13m32s
 ACD(0h) = Oct 20 1875 NS; ACD(12h) = Apr 20 1876 NS
CHART POINTS
 Point   Longitude      Travel      Latitude       Rt.Asc.        Decl.      Azi(0N)         Alti.
 Mon   22Pi41'17''       +1358'      -0126'      35351'      -0413'      20126'      +3123'
 Sun   19Li13'38''       +59'25''      -0000'      19744'      -0731'      35204'      -4459'
 Mer   13Sc21'13''       +36'02''      -0314'      21951'      -1856'      31626'      -5014'
 Ven   24Li23'54''       +0114'      +0059'      20257'      -0832'      34436'      -4520'
 Mar   22Cp52'37''       +37'59''      -0240'      29511'      -2409'      24501'      -1122'
 Jup   07Sc07'36''       +12'47''      +0057'      21505'      -1259'      32621'      -4635'
 Sat   19Aq31'03'' R      -01'08''      -0123'      32223'      -1618'      22750'      +0903'
 Ura   19Le07'37''       +02'16''      +0040'      14146'      +1544'      04838'      -0916'
 Nep   01Ta59'46'' R      -01'38''      -0149'      03027'      +1028'      15343'      +4535'
 Plu   23Ta14'34'' R      -00'54''      -1436'      05429'      +0426'      12831'      +3045'
 Asc   05Le52'34''       +25409'      +0000'      12815'      +1848'      05810'      +0000'
 MC   13Ar08'47''       +39016'      +0000'      01205'      +0511'      18000'      +4253'

Jean

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Re: Right Ascension of ascendant
« Reply #7 on: December 11, 2023, 02:37:51 PM »
Ed sent me a piece of code, so it's fixed. ;D
Greetings from Groningen Netherlands <)))><.`.><(((>

markul

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Re: Right Ascension of ascendant
« Reply #8 on: December 11, 2023, 06:00:30 PM »
Wow, that was fast!  I checked a few charts and it looks great. 

I'm curious, did the ASC (and MC?) require a different formula than planets?

Thanks so much!
Mark

Jean

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Re: Right Ascension of ascendant
« Reply #9 on: December 11, 2023, 06:23:04 PM »
The RA for MC is calculated by the swiss ephemeris, it's called ARMC.
So is the RA for planets, even stars.
But for things like asc etc. Ed sent me a little piece of code. It works for bodies on the ecliptic that have celestial latitude of 0 degrees.
Greetings from Groningen Netherlands <)))><.`.><(((>

ABer

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Re: Right Ascension of ascendant
« Reply #10 on: December 11, 2023, 07:49:51 PM »
Hi there - thanks for confirming that this is working well. I'm glad we have been able to help.

If you would like to post your script please add a thread to the Extension Scripts board. You can add the actual ab file as an attachment for registered users of the forum to download.

All the best. Ed

markul

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Re: Right Ascension of ascendant
« Reply #11 on: December 12, 2023, 03:35:38 PM »
Hi Ed,

Thanks for your help.   

I'm experimenting with some ideas that may or may not pan out.  If they seem useful, I'll clean up what I'm doing and post it.

Cheers,
Mark