Type Periodic Perihelion Date 16 November 2017 Perihelion Distance (q) 1.2 Aphelion Distance (Q) 7.0 Period (Years) 8.3 Eccentricity (e) 0.70 Inclination (i) 11.7 Click for NASA orbit diagram

The comet was discovered by Alexandre Schaumasse during a visual search with the 400mm coude equatorial at Nice, France in December 1911 as a 12m diffuse object and it reaches a similar magnitude at average returns. The 1952 return was very favourable and the comet reached 5m, though there may have been an outburst. Date 10x10 mag Error Kphot mag Coma ' 29-Aug-17 17.39 0.07 14.3 0.2 22-Sep-17 15.98 0.01 12.9 0.7 15-Dec-17 14.70 0.08 11.5 3.7 15-Feb-18 16.76 0.01 13.7 0.4 13-Mar-18 17.29 0.03 14.2 0.5 23-Mar-18 17.60 0.08 15.3 0.4 16-Apr-18 17.81 0.02 14.7 0.3

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