LatLng

An object that represents a latitude/longitude pair. This is expressed as a pair of doubles to represent degrees latitude and degrees longitude. Unless specified otherwise, this object must conform to the WGS84 standard. Values must be within normalized ranges.

Fields
latitude number

The latitude in degrees. It must be in the range [-90.0, +90.0].

longitude number

The longitude in degrees. It must be in the range [-180.0, +180.0].

JSON representation 
{
  "latitude": number,
  "longitude": number
}