 Astronomers Christine Chen and professor Michael Jura found that the dust contained within this belt should have fallen into the star within years, a time period much shorter than Zeta Leporis's estimated age, suggesting that some mechanism must be replenishing the belt.The belt's age is estimated to be years.Bobylev's calculations from 2010 suggest that this star passed as close as 1.28 parsecs (4.17 light-years) from the Sun about 861,000 years ago.