Moon's vissibility on April 3, 786 B.C.

[Guest guest]

<<The topocentric new moon therefore happened in Babylon sometime

between 19h40m and 20h07m GMT, which at the Babylon site is from

10:37 to 11:04 PM LMT.>>

 

I made a mistake of 2 hours here, sorry. The time of the topocentric

new moon is from 17h40m to 18h07m GMT, corresponding to 8:37 p.m. to

9:04 p.m. LMT in Babylon.

 

Juan

[Guest guest]

Juan,

 

I'm into this late, but Solar Fire gives True Sunset on April 3 786 BC as

7:17:05 PM

LMT Fagan-Bradley, with the couplet of astrology, Moon and Mercury conjoined.

 

Moon 29 AR 50

Mercury 29 AR 22 Retro.

Is this incorrect.? I've lived with this horoscope for a long time.

 

Dark*Star

 

 

prec2nod wrote:

 

> <<I'm further confounded as to why you would maintain that 1st Nisan

> of April 3, 786 B.C. was invisible. The New Moon in right ascension

> occurred at 8:50 PM LMT on the evening of April 2nd and the New Moon

> in longitude more than an hour before that. So if sunset was at

> about 6:10 PM on the evening of April 3rd at Babylon and the Sun

> would have been sufficiently depressed below the horizon about thrity

> to thirty five minutes later for the Moon to be seen, that means the

> Moon was about 22 hours old and had sufficient altitude to be seen. --

> Ken Bowser.>>

>

> The difference between ephemeris time and universal time, the so-

> called delta-t, is not accurately known in 786 B.C., and depending on

> the approximate algorithm used it may vary from 5h53m to 6h20m (ref.:

> http://www.phys.uu.nl/~vgent/astro/deltatime.htm). With the Swiss

> Ephemeris (swewin32.exe) based on DE406 one can calculate the

> ephemeris time of the new moon in longitude on April 2nd: 22h32m51s

> ET, which adding delta-t means that the geocentric new moon happened

> sometime between about 16h13m and 16h40m GMT (=U.T.)

>

> The coordinates of the Babylon archeological site are 32N30/44E22,

> the local mean time of the new moon is then + 2h57m = from 19h10m to

> 19h37m. But since we are talking about naked-eye vissibility, the

> calculation must be topocentric, which can be done easily with

> swewin.exe. The topocentric new moon therefore happened in Babylon

> sometime between 19h40m and 20h07m GMT, which at the Babylon site is

> from 10:37 to 11:04 PM LMT.

>

> Sunset at Babylon the next day (April 3rd) occurred at 6:10 P.M. LMT,

> with the Moon 10.7 degrees away from the Sun and a vissibility of

> 0.8%. Its altitude above the horizon was 10,42'. The topocentric

> position of the Moon at sunset that day (April 3rd) in the Fagan-

> Bradley sidereal zodiac was 28,42 Aries. It set 55 minutes later,

> when the Sun was 11 degrees below the horizon.

>

> Conclusions?

>

> Juan

>

>

> " How can Pluto be in Sagittarius when it's so close to Antares? " -----

>

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[Guest guest]

<<I'm into this late, but Solar Fire gives True Sunset on April 3 786

BC as 7:17:05 PM LMT Fagan-Bradley, with the couplet of astrology,

Moon and Mercury conjoined.

Moon 29 AR 50

Mercury 29 AR 22 Retro.

Is this incorrect.? I've lived with this horoscope for a long time.

Dark*Star>>

 

Planetary positions will vary slightly (a few arcminutes, especially

the Moon) depending on the ephemerides one is using, but the *local*

time of sunrise or sunset is not affected by this, so yes, the

time " 7:17:05 PM LMT " for sunset is wrong. It is impossible to have

the Sun at the western horizon at this latitude and time of the day.

The correct time is the one I posted originally given by Ken Bowser:

6:10 PM.

 

Juan

[Guest guest]

Juan,

So sorry, I should have said the visual _Moonset at 7:17 PM LMT.

Is this agreeable to you?

D*S

 

 

prec2nod wrote:

 

> <<I'm into this late, but Solar Fire gives True Sunset on April 3 786

> BC as 7:17:05 PM LMT Fagan-Bradley, with the couplet of astrology,

> Moon and Mercury conjoined.

> Moon 29 AR 50

> Mercury 29 AR 22 Retro.

> Is this incorrect.? I've lived with this horoscope for a long time.

> Dark*Star>>

>

> Planetary positions will vary slightly (a few arcminutes, especially

> the Moon) depending on the ephemerides one is using, but the *local*

> time of sunrise or sunset is not affected by this, so yes, the

> time " 7:17:05 PM LMT " for sunset is wrong. It is impossible to have

> the Sun at the western horizon at this latitude and time of the day.

> The correct time is the one I posted originally given by Ken Bowser:

> 6:10 PM.

>

> Juan

>

>

> " How can Pluto be in Sagittarius when it's so close to Antares? " -----

>

> Post message:

> Subscribe: -

> Un: -

> List owner: -owner

>

> Shortcut URL to this page:

> /

>

>