Table 2: Parabolic orbital elements for the individual apparitions from C2 observations only that have been used as a starting point for the identification, in comparison to the actual C2 link. For the elements two data points from 2003 with overall residuals larger than 50 arcsec were excluded.
  C/1999 R1 (SOHO)   C/2003 R5 (SOHO)   C/1999 R1 = C/2003 R5 (SOHO)
Epoch 1999 Sep. 5.0   2003 Sep. 8.0   2003 Sep. 8.0
T 1999 Sep. 5.53   2003 Sep. 8.82   2003 Sep. 8.82
q [AU] 0.0556   0.0569   0.0570
e 1.0   1.0   0.97757
$\omega$ [deg] 43.88   44.04   43.58
$\Omega $ [deg] 5.65   4.81   5.04
i [deg] 13.60   14.14   13.67
P [yr] n/a   n/a   4.01
rms [ $^{\prime\prime}$] 5.4   13.7   13.6
T...Time of perihelion, q...Perihelion distance, e...Eccentricity, $\omega$...Argument of perihelion,
$\Omega $...Ascending node, i...Inclination, P...Orbital period, rms...Root mean square of residuals.

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