The video above by "Terry White" shows how to add satellite location to your photos when using a camera without a built in GPS.
Below is the iPhone and Android app used to create the .gpx files to import into Lightroom for adding GPS coordinates and features to photos.
P.S. You don't have to sign up with Geotagphotos.net to use this app. You have the option in the app to email the .gpx files to yourself or download them through the iTunes software.