行星在冷矮星上的轨道距冷矮星更近，因此运行周期也就更短---这就需要天文学家频繁的观察。
The habitable zone for planets in orbit around cool dwarf stars is also much closer in, so the period of revolution is shorter — affording astronomers more frequent transits to observe.
它的运行轨道为近似的圆形，以229天为周期，围绕着两个恒星作轨道运行，这个行星位于这个系统的可居住区之外——所谓可居住区，那里有液体水，正像我们所知道的那样，那里可能会有生命的存在。
Traveling on a nearly circular, 229-day orbit around both host stars, the planet lies outside the system's habitable zone—the region where liquid water, and thus life as we know it, could exist.
路易斯安那大学拉斐特分校的天文学家约翰·马泰塞和丹尼尔·惠特迈尔曾多次发表声明表示，基于长周期彗星运行轨道的不规则性，他们发现了该天体存在的证据。
Astronomers John Matese and Daniel Whitmire of the University of Louisiana at Lafayette repeatedly claimed to have evidence of its existence based on irregularities among long-period comets.
速度差各分量的变化具有很明显的周期性且与卫星轨道的运行周期相吻合。
The variations of velocity difference have obvious periodicity, which coincides with the satellite orbit period.
其中一颗三十天沿轨道运行一周，而另一颗所需时间恰好是它的运行周期的两倍。
One takes 30 days to complete an orbit, the other exactly twice as long.
其中一颗三十天沿轨道运行一周，而另一颗所需时间恰好是它的运行周期的两倍。
One takes 30 days to complete an orbit, the other exactly twice as long.
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