Differences

This shows you the differences between two versions of the page.

--- georef [2021/03/11 00:15] – [Coordinate Conversion] allchin09
+++ georef [2021/03/11 00:31] (current) – [Coordinate Conversion] allchin09
@@ Line 132: / Line 132: @@
-Sydney Observatory was used as a datum for triangulation, with the following values:
+On these maps, Sydney Observatory was used as a datum for triangulation, with the following values:
-^Value     ^DMS                  ^DD                 ^
+^Format ^Latitude          ^Longitude         ^
-|Latitude  |33d 51m 41.10s south | 33.861417d south  |
+|DMS    |S 33d 51m 41.10s  |E 151d 12m 17.85s |
-|Longitude |151d 12m 17.85s east | 151.204958d east  |
+|DD     |S 33.861417d      |E 151.204958d     |
+The [[http://www.ga.gov.au/ngrs/imf.jsp?site=ngrs|NGDB]] provides the following values of the observatory in different datums:
+^Datum  ^Latitude            ^Longitude           ^Easting       ^Northing   ^
+|Clarke |S33°51' 41.107"     |E151°12' 17.993"    |420746.19     |816789.65  |
+|AGD66  |S33°51' 40.2924"    |E151°12' 12.3136"   |333809.38     |6251769.51 |
+|AGD84  |S33°51' 40.3241"    |E151°12' 12.2557"   |333807.91     |6251768.51 |
+|GDA94  |S33°51' 34.610232"  |E151°12' 16.470597" |333913.76     |6251959.42 |
 Note: