Short arc orbit determination and imminent impactors in the Gaia eraF. Spoto, A. Del Vigna, A. Milani, G. Tommei, P. Tanga, F. Mignard, B. Carry, W. Thuillot and P. DavidA&A, 614 (2018) A27DOI: https://doi.org/10.1051/0004-6361/201732104