New answers tagged geodesy
For #2 - 40,075 km is the East-West circumference. 40,008 km is the North-South circumference. The 9 km error in Google Earth's estimate could be the way they calculate great circle lengths.
The geopy pull request fixes your issue with geopy. You will need to install the python package geographiclib first with pip install geographiclib
Not unless you use special software; it only makes sense if your device is firmly attached to earth for year-long periods; see sec. 10.1.1 ("Site Displacement Modeling: Tectonic Plate Motion") in the BERNESE Manual: Station coordinates are changing in time due to the steady movement of tectonic plates. Figure 10.8 shows the present day major tectonic ...
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