Machine-to-machine communications provider Orbcomm of Fort Lee, N.J., said the first six satellites in its Orbcomm Generation 2 (OG2) constellation are preparing for a May 10 launch from Cape Canaveral Air Force Station, Fla., aboard a Space Exploration Technologies Corp. Falcon 9 rocket.

The launch window opens May 10 at 9:39 a.m. EDT and runs through 10:33 a.m., the company said in a notice posted to its website April 28. The backup launch date is May 11, Orbcomm wrote. 

The full OG2 constellation will consist of 17 satellites. The spacecraft are being built by Sierra Nevada Space Systems of Louisville, Colo. 

“The remaining 11 satellites in the constellation are in final integration at SNC’s facility in Louisville, Colorado, and are on track to support the next launch (OG2 Mission 2) scheduled in the fourth quarter of 2014,” Sierra Nevada Space Systems wrote in an April 30 press release.