Phnom Bakheng : the prime meridian of Angkor

Back

Forward

Main Page

The original photo (without diagram) is in the public domain

(NASA)



The original photo (without diagram) is in the public domain because it was created by NASA


The original photo (without arrow and labels) is in the public domain

         MANDA epicycle


     Coordinates of centre:

          13.444697°

          103.882177°


     Radius = 0.11057 km

                 = 0.14694 KY

    Azimuth =183.273°

 Radius = quarter of  perimeter of  takeo’s external  enclosure.

(Glaize: The external enclosure wall forms a rectangle of 120 metres by 100)


         

Takeo temple     This file is licensed under Creative Commons Attribution 2.0 License
Full resolution (2,272 × 1,704 pixels, file size: 1.28 MB, MIME type: image/jpeg)



Centre of Manda epicycle on central tower

              Ta Prohm          Courtesy of Moyra Farrington

Back

Forward

Main Page

Corresponding  JAVA APPLET :



Corresponding  JAVA APPLET :

 x = - 0.098  ;  y = - 0.022 ;  zoom = 50000 (upper tool bar)

Scale = 0.5 (lower tool bar)

Download : approx. 30 seconds with broadband connection


Corresponding  JAVA APPLET :

 x = - 0.124  ;  y = - 0.022 ;  zoom = 8000 (upper tool bar)

Scale = 1  (lower tool bar)

Download : approx. 30 seconds with broadband connection

Corresponding  JAVA APPLET :

 x = - 0.092 ;  y = - 0.0155;  zoom = 100000 (upper tool bar)

Scale = 0.25 (lower tool bar)

Download : approx. 30 seconds with broadband connection

The original photo (without diagram) is in the public domain because it was created by NASA


Methods of cartography

Methods of cartography

Methods of cartography

Methods of cartography

TaProhm2

Radius of deferent (Rd) = 2.84253 km   

Radius of Manda epicycle(Rm) = 0.11057 km

 Rm/Rd =  0.0389  = Midnight eccentricity


Azimuth of radius of Manda epicycle

=183.273° from Sun (East) on 22 / 04 / CE 967  (Julian calendar) at midnight between 22nd and 23rd.

= 220° from Vernal equinox (Midnight apsides line)



Radius of deferent (Rd) = 2.84253 km  

Radius of Sighra epicycle (Rs) = 1.04234 km

 Rs/Rd = 0.3667 = Midnight ratio


Mercury-table

Link to Full Data Sheet

(Mercury, April 22, 967)

Last modification : 15 / 12 / 2008



Copyright 2008  Jean-Pierre Lacroix & Robert Bywater

jpl@ancientcartography.net

rab1@ancientcartography.net

Khmer units

Corresponding  JAVA APPLET :

 x = 0  ;  y = 0  ;  zoom : from 2000 to 100000 (upper tool bar)

Scale : from 10 to 0.25

Download : approx. 30 seconds with broadband connection


Links :   Sun of Beng Mealea

             Sun of Chau Srei Vibol

              Methods of cartography

Khmer units