除了这个，还能得到半径的大小，速度以及周期，假设你在地球上，和这些恒星环绕的，轨道同处一个平面。
And out of this information you get the radius, the velocity and the period, assuming that you are on Earth in the plane of the orbit of the stars.
媒体报道：每24小时环绕地球15圈，有两个月的生命周期的Rassad - 1将会用于拍摄和传输所在行星的图像。
Rassad-1, which orbits the Earth 15 times every 24 hours and has a two-month life cycle, will be used to photograph the planet and transmit images, media reports said.
当Nanosail-D环绕地球运行时，会周期性地闪烁出光亮，使人能（通过仪器）轻易地用眼睛看到。
Glinting in the sunlight as it circles planet Earth, the NanoSail-D solar sail will periodically be bright and easily visible to the eye.
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