20, 1917 and was observed for 96 days [@ask23; @ask32] from many places on the Earth. In the southern hemisphere, the comet reached up to +1 magnitude. Astronomer J.F. Skjellerup noted that the brightness of the cometary head was about +3 magnitude, with the diffuse coma and narrow tail about 10$^\circ$ long on April 19, 1917 [@orch03]. The comet is a Halley-type comet, with a relatively low inclination, and has one of the smallest perihelion distances. It was observed only at one apparition. Despite the relatively long observational arc, the precision of the orbital elements is questionable. @ask32 published a slightly modified orbit of the comet and noted that the orbit is given with a period of $145\pm0.8$yr [@cham97]. The nominal orbital elements, according to JPL Solar System Dynamics database [@cham97], are presented in Table 1. Although the ascending and descending node of the nominal orbit are currently far away from the orbit of the Earth, we noted a small difference in the eccentricity (e.g. $\Delta e\sim$ $-0.002$) would change the orbit into an Earth-crossing orbit as the heliocentric distance of the ascending node would become equal to 1AU. The orbit has a notably small perihelion distance ($0.19$AU). Several authors 