Take the 2-minute tour ×
Geographic Information Systems Stack Exchange is a question and answer site for cartographers, geographers and GIS professionals. It's 100% free, no registration required.

What datum (reference ellipsoid) does Google Earth[1] use?

I can't seem to find where Google Earth tells explicitly what datum they use. I need some sort of valid link.

[1] The default free version that you download from Google.

share|improve this question
add comment

2 Answers

up vote 10 down vote accepted

WGS84, according to:

http://support.google.com/earth/bin/answer.py?hl=en&answer=148110

Cheers, Ryan

share|improve this answer
1  
Is it important for this question, that the geoid they use is not a perfect WGS84 geoid, but an EGM96 geoid which is a sphere? groups.google.com/forum/?fromgroups=#!msg/kml-support-advanced/… –  Matthias Kuhn Apr 23 '13 at 7:18
add comment

It is NAD27, according to google support: http://support.google.com/earth/bin/answer.py?hl=en&answer=148110

share|improve this answer
3  
This is incorrect. The page you link to explicitly states: "Google Earth uses Simple Cylindrical projection with a WGS84 datum for its imagery base." –  Fezter Apr 23 '13 at 6:46
add comment

Your Answer

 
discard

By posting your answer, you agree to the privacy policy and terms of service.

Not the answer you're looking for? Browse other questions tagged or ask your own question.