The discovery, loss and rediscovery of comet 205P/1896 R2 Giacobini

Comet D/1896 R2 was discovered in 1896, after which it was permanently lost. The computation of the orbit and the study of the dynamic evolution of this comet showed that the effect of planetary perturbations leads to a decrease in the position uncertainty of Comet D/1896 R2 in the expected passages of perihelion in 2001 and 2008. On September 10, 2008, Comet P/2008 R6 was discovered and identified with Comet D/1896 R2.