Current projections are that Apophis, which was discovered in 2004, will orbit near the earth several times between 2029 and 2036. In October 2009, near-Earth object (NEO) trackers Steve Chesley and Paul Chodas of NASA's Jet Propulsion Laboratory in Pasadena, California, placed the odds of Apophis striking Earth in 2036 at about one in 233,000, lower than previous estimates.
阿波菲斯是 2004 年发现的。按照目前的预测，在 2029 年和 2036 年之间，它将有若干次机会从接近地球的轨道上通过。 2009 年 10 月， NASA 加州喷气动力实验室的近地天体追踪人员切斯利（ Steve Chesley ）和乔达斯（ Paul Chodas ）估算出，阿波菲斯于 2036 年撞上地球的几率约为 1/233000 ，低于之前的历次估算。