WorldView-1 was launched on September18, 2007.
WorldView-2 was launched on October 8, 2009.
DigitalGlobe’s previous satellite, WorldView-3 was launched in August, 2014.
WorldView-4 will be launched from the Vandenberg Air Force Base in California.
The satellite has been developed by Lockheed Martin.
WorldView-4 is likely to double DigitalGlobe’s satellite imagery coverage and increase the company’s 16-year library of time-lapse imagery.
The satellite will orbit the Earth every 90 minutes, travelling 17,000 miles per hour and will capture more than 6, 80,000 square kilometers of the Earth’s surface daily.
WorldView-4 will fly at an altitude of 617 km (383 miles)
And can “revisit” any point on the globe every 4.5 days or sooner.
WorldView-4 is totally a ‘commercial’ satellite.