It's just another Kuiper Belt object.

它只是柯伊伯带天体的一员。

youdao

After a year of studying Vesta, Dawn is scheduled to leave orbit and, in 2015, approach the only asteroid-belt object that is larger: Ceres.

一年后，黎明号探测器将离开灶神星的轨道，计划在2015年到达谷神星，它是小行星带中唯一一颗比灶神星大的小行星。

youdao

Artificial illumination on a Kuiper Belt Object would stand out because it would vary less than reflected sunlight does when the world moved toward or away from the sun.

柯伊伯带天体上的人工照明之所以会显得特别突出是因为不管它转向或者转离太阳，其所反射的太阳光都不会变化很大。

youdao

It will linger at Vesta, the second most massive object in the asteroid belt, until next summer, when it is scheduled to depart for a larger asteroid called Ceres.

WSJ: Asteroid Vesta Gets a Close Study

Bill Cooke, head of NASA's Meteoroid Environment Office, said scientists believe the object originated in the asteroid belt between Mars and Jupiter.

CNN: Planet of sound: Meteor blast resonated around Earth

Abell says the best estimates now are that the Russian object was initially a rocky silicate asteroid that almost certainly originated from the main asteroid belt.

FORBES: NASA Eager To Analyze Russian Meteor Fragments