The Trojan asteroids of Mars and Jupiter are long-term stable, those of Earth are expected to be just transient companions. The first Trojan of our planet, 2010 TK₇, was discovered in 2010 and its resonant state was found to be transient. Here, we provide a preliminary assessment of the current dynamical status and short-term orbital evolution of 2020 XL₅, a recently discovered near-Earth asteroid that might be the second known representative of this elusive population. Our calculations show that the current orbit determination of 2010 TK₇ is consistent with that of a robust, present-day, yet transient, L₄ Earth Trojan. In sharp contrast, the current orbit determination of 2020 XL₅ is still too uncertain and its orbital evolution too chaotic to confirm a current Trojan engagement with Earth, although the nominal orbit shows such a behavior. More observations are required to provide a conclusive answer.

火星和木星的特洛伊小行星是长期稳定的，地球的那些预计只是短暂的伙伴。我们星球上的第一个特洛伊木马 2010 TK ₇于 2010 年被发现，它的共振状态被发现是短暂的。_{在这里，我们对 2020 XL 5}的当前动态状态和短期轨道演化进行了初步评估，这是一颗最近发现的近地小行星，可能是这个难以捉摸的种群的第二个已知代表。我们的计算表明，目前 2010 TK ₇的轨道确定与稳健的、当今但短暂的 L ₄地球特洛伊木马的确定是一致的。与之形成鲜明对比的是，目前的定轨2020 XL ₅仍然太不确定，而且它的轨道演化太混乱，无法确认当前特洛伊与地球的接触，尽管标称轨道显示出这种行为。需要更多的观察才能提供结论性的答案。