In about fifteen minutes - PhoneSat

UPDATE - launch aborted More info here. A new satellite is scheduled to be launched in about fifteen minutes. Check out PhoneSat:

PhoneSat is a nanosatellite, categorizing the mass as between one and ten kilograms. Additionally, PhoneSat is a 1U CubeSat, having a volume of around one liter. The PhoneSat Project strives to decrease the cost of satellites while not sacrificing performance. In an effort to achieve this goal, the project is based around Commercial Off-The-Shelf (COTS) electronics to provide functionality for as many parts as possible while still creating a reliable satellite. Two copies of PhoneSat 1.0 are being launched mid April 2013 along with an early prototype of PhoneSat 2.0 referred to as PhoneSat 2.0.beta.

Amateur radio operators
PhoneSat satellites are emitting packets on the amateur radio spectrum to report different types of message. The details of these packets can be found on the packets page. If you are an amateur radio operator and you can receive these packets, you have the great opportunity to contribute to the project by submitting them. The dashboard page will give you all the information you need to track the satellites in real time.