A geocentric datum has the centre of the earth as its origin. The change means the horizontal coordinates of existing datums will shift by about 200 metres in Australia and New Zealand. The change applies to all spatial data, including latitudes and longitudes, and grid coordinates of northings and eastings. A change in geodetic datum is rare, so it is important to understand the issues and research them in your own organisation. Find out about the datum you currently use, as well as the new geocentric datum.
ICSM representatives are available to conduct briefings on either new datum.
Once you understand the topic, identify your needs and how the geocentric datum will affect those needs. To help you develop a coordinated approach, find out if and how the new datum will affect your customers and data providers. Your approach will depend on the nature and size of your business' spatial and textual databases and map products, your technical capabilities and the needs of your clients. Choose an approach that minimises confusion. The size of your organisation and the amount of data you use or supply will affect the costs and timetables relating to any transition.