# Identifying the coordinate system in a set of Australian data

I have the following set of data.

Name Easting Northing
Point 1 7675 0576
Point 2 7758 0330
Point 3 7568 0864

I would like to know what coordinate system this data uses, to convert it to latitude and longitude later.

I did not find any documentation about the coordinate system used. The data is from an public university document.

I know the locations are somewhere in Zone 50 of WGS84 (West-Western Australia).

I saw on another question that projfinder.com usually helps in these situations, but I am unsure how to use it or analyse the results it returned.

The data can be found here: https://library.dbca.wa.gov.au/static/FullTextFiles/069766.pdf See pages 178 - 182.

Any ideas?

After using a map from here and the original data as seen here (see pages 178-182), I created this image. Does the image help identify the identify the coordinate system used in the set of data?

• Have you tried multiplying each value by 1,000 and then plot them in Zone 50 to see their locations?
– PolyGeo
Nov 26, 2023 at 8:53
• You need some more information. Zone 50South WGS84 coordinates in the Australian Continent (EPSG32750) are in the valid range on the Continent SW: 320,300E- 6125, 000N; NW: 181,900E- 7562,000N NE: 816,000E- 7793,000N SE: 785,000E- 6217,000N. No amount of multiplying will solve this- you are missing at least 2 digits in East and 3 in North Nov 26, 2023 at 10:32
• If, for example, you can find which map these points are located on, that might be enough information to infer the missing digits. What are the locations that these data represent? Nov 30, 2023 at 6:27
• can you give a link to the data/document? Nov 30, 2023 at 8:52
• @nmtoken, I have edited the question to include a link to the document, see pages 178-182. Dec 3, 2023 at 14:35