http://www.world-gazetteer.com provides geographic coordinates of many cities (select country - "cities" - city)
For US coordinates, USGS GNIS service is extremely extensive. It also provides linkouts to topozone and terraserver so that you can tweak the results to your liking.
For US addresses, A2B provides you with the latitude and longitude of a US street address and returns nearest websites to that address. You can then add your own sites.
For Australian placenames, try Geoscience Australia Place Name Search
Looking at a wiki that uses map coordinates, e.g.http://susning.nu/
Zooming in on the place on TerraServer-USA and getting the values at left
Offline software:
NASA World Wind has a limited database of U.S. and global placenames. Sorry, no street addresses. Press Ctrl-F, enter the official place name, click Search, you will probably find the place you're looking for. Click Go and press Ctrl-C to copy the decimal coordinates. Paste it into Wikipedia. Example: For Tucson International Airport → "worldwind://goto/world=Earth&lat=32.11611&lon=-110.94109&alt=24389"
On GISWiki has been the Tool hjl_get_Coor developed, that takes the coordinates from a Google Map and builds the {{coor d|...}} or <geo>...</geo> markup. There is a version for the english and german Wikipedia available.
Regardless of the source of coordinates, good practise is to evaluate whether they appear reasonable at first glance. A map of the world by Johannes Kepler A map is a simplified depiction of a space, a navigational aid which highlights relations between objects within that space. ... For other meanings of Atlas, see Atlas (disambiguation). ... Modern-style library In its traditional sense, a library is a collection of books and periodicals. ... Over fifty GPS satellites such as this NAVSTAR have been launched since 1978. ... A waypoint is a fixed location with a specified longitude and latitude and UTM coordinates, which is maintained by a global positioning system (GPS). ... Google, Inc. ... Latitude, denoted by the Greek letter φ, gives the location of a place on Earth north or south of the Equator. ... Map of Earth showing curved lines of longitude Longitude, sometimes denoted λ, describes the location of a place on Earth east or west of a north-south line called the Prime Meridian. ... A wiki (pronounced , or ; see section Pronunciation) is a web application that allows users to add content, as on an Internet forum, but also allows anyone to edit the content. ... TerraServer-USA web site TerraServer-USA is a free online repository[1] of public domain aerial imagery and satellite imagery, formerly known as Microsoft TerraServer. ... World Wind is a virtual globe developed by NASA for use on personal computers running Microsoft Windows. ... Tucson International Airport is the second largest commercial aviation institution in the state of Arizona. ...
This article is about longitude and latitude; see also UTM coordinate system Map of Earth showing lines of latitude (horizontally) and longitude (vertically); large version (pdf) The geographic (earth-mapping) coordinate system expresses every horizontal position on Earth by two of the three coordinates of a spherical coordinate system which...
Such geographic information shall include positions for two (one is acceptable for very small jobs) stations, in both NAD27 and NAD83 datums, the controlling tri-stations used and their epoch date, and a sentence indicating the method used in itsestablishment, i.e.
The geographiccoordinates for the angle point No. 1, tract 42 were determined by Global Positioning techniques together with control traverse data supplied by the project Cadastral Surveyor.
The number of decimal seconds for geographiccoordinates to be shown in the field notes and in the final plat remain the same: 3 decimal places for direct GPS positions, and 2 decimal places for positions derived from conventional ties to GPS or tri-stations.
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