Muhurutha, Ayanamsa, Prashna charts - some queries

[Guest guest]

Dear Ramapriya devi,

 

Hare Rama Krsna.

 

>I don't know much about the ayanamsa thing. I choose Lahiri out of flock

>mentality, but I do know a few who vouch by the KP ayanamsa.

>Interestingly this had to happen to me), my chart shows a Leo asc with

>Lahiri ayanamsa and Virgo with the KP one

 

Being an astrologer yourself, have you examined your chart with the both

ascendants? Which one would fit better? Are you sure about the exact

timing of your birth?

 

I'm very interested in discussing your chart with you, since I use an

ayanamsa slightly different from Lahiri. If you don't mind.

 

Your sishya,

Dhira Krsna dasa

[Guest guest]

vedic astrology, Sushmita S <sushmita34>

wrote:

 

Well, we are living on the earth. Thus, we measure from the earth

surface(local Lorentzian spacetime). This is earth station centric

frame. Earth's radius is very small compared to Astronomical Units.

Thus this earth station centric frame can be treated as GEOCENTRIC

frame. We measure things in this frame. How do you compare various

planetary measurements. We got to have some common ground to do so.

This could be orbital equator frame, or any other frame, which is in

uniform frame(non-rotating, or inertial, or Galilean Frame).

 

What if we consider orbital equator frame. This frame is not inertial.

The orbit rotates due to gravitational perturbations from other

planets. This precession called PLANETARY precession. Thus we need to

go one step further. Thus, distant galaxies aka constellations of

stars plays a commonground in cosmological framework to compare and

contrast.

 

We knew that Geocentric Cosmology is the legacy of 18th century

Europe, but not of Indic traditions.

 

Earth is spinning wrt NS axis(Thats why we experience day-night

cycle). But the planets in top layer(Sun) and down layer(Moon) causes

change in the direction of NS axis of Earth(again Gravitational

effects). This is called luni-solar precession. This causes seasonal

variation(up to Ice ages).

 

The planets in same layer of the earth(all planets, except SUN and

moon) causes the ecliptic plane to precess. And the planets in top

layer(Sun- Earth orbiting around sun), and the planets in down

layer(Moon--Moon orbital around Earth) contribute major part in

General precession in longitude(Lunisolar+planetary).

 

If we wanna measure wrt large universe aka constellations of

galaxies/stars, we need to substract lunisolar precession and

planetary precession.

 

 

At present epoch, the general precession in longitude is 5029" of arc

per Julian century.

 

Just we are converting geocentric measurements to commong background

aka sidereal measurements.

 

Of course, one has to take care of many factors for precise measure

such as relativistic corrections(or manvantara corrections in pre-MBh

Indic astronomy), secular drifts in ranging devices(Which amounts to

1".5 of arc/century)...

 

And present crop of astrophysicists contradict themselves wrt spinning

 

Solar system(in other words, solar system barycentric frame is

inertial or non-inertial?). Prof. Scott Tremain of Princeton Univ, IAS

presumes that Solar system as a whole at this epoch is not spinning,

where as Anthony Aguirre, who sits next to Prof. Scott room in IAS

contradicts to Scott's theory...

 

The current question is Newtonian tidal spin or Einsteinian GR, or any

Unified Theory with Spin.

 

Rgds,

VR

 

 

 

 

 

 

 

 

> Ayanamsa

>

> Another question on Ayanamsa, I presume most astrologers use Lahiri

ayanamsa, I am not well versed with astronomy so pls bear with me.

>

> Can someone supply an article or information on - since how many yrs

Lahiri Ayanamsa is being practiced among the astrological community

and why Lahiri ayanamsa is the best one.

>

> If it is possible for some Learned astrologers & Gurus in this list

to share from their experience as to which ayanamsa has given them

better success, it would help a lot.

>

> Mail Plus - Powerful. Affordable. Sign up now

[Guest guest]

Ref #21840

 

vedic astrology, "venkateshwara_reddy wrote:

 

 

> What if we consider orbital equator frame. This frame is not

inertial.

> The orbit rotates due to gravitational perturbations from other

> planets. This precession called PLANETARY precession. Thus we need

to

> go one step further. Thus, distant galaxies aka constellations of

> stars plays a commonground in cosmological framework to compare and

> contrast.

 

To clarify further on Planetary precession:

 

9".0 of arc/cy is the contribution to precession of the equinoxes

from the planetary effects(planetary precession) on the orientation

of the ecliptic (the plane of the Earth's orbit).

 

Because the equinox is the intersection of the Earth's

equatorial plane and the ecliptic plane, the equinox is moved by

changes of either of the two planes, and in fact both are moving. But

the equator moves much faster than the ecliptic, because the

gravitational torques of the Sun and Moon on the Earth's equatorial

bulge is relatively large. So the "planetary" part of the precession

is quite small.

 

 

Another effect is change in the longitude of perihelion. This is

about 11".0 of arc/year.

 

The longitude of perihelion is the direction *in* the plane of the

Earth's orbit where we are closest to the Sun. The effect discussed

immediately above here is the change in orientation of the orbit in

its own plane. The planetary precession, discussed previously (at the

top of this message), is due to the change in the orientation of the

orbital plane in space, but has nothing to do with the "line of

apsides" (the orientation of the elliptical orbit in its own plane).