**Table 2:** Orbital elements of comet 79P/du-Toit-Hartley from HORIZONS (Giorgini et al. 1996).
Symbol	Name	Value
T	epoch (JD)	2453372.0
a	semi-major axis	3.0318309 AU
e	eccentricity	0.5943219
i	inclination	2.89345 $(^\circ)$
$\Omega$	Long. of Asc. Node	307.94129 $(^\circ)$
$\omega$	arg. of perihelion	253.13443 $(^\circ)$

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