Table 6
Strand parameter statistics by Oort group and orbital arc.
| Pre-perihelion strands |
||||||
|---|---|---|---|---|---|---|
| kr statistics |
mr statistics |
|||||
| New | Int. | Old | New | Int. | Old | |
| N | 298.4 | 227.7 | 117.9 | 298.4 | 227.7 | 117.9 |
| Mean & SE | 11.51 ± 0.03 | 12.05 ± 0.04 | 14.80 ± 0.06 | 8.17 ± 0.03 | 8.79 ± 0.03 | 10.97 ± 0.03 |
| 25% | 7.81 | 7.99 | 10.82 | 5.55 | 6.14 | 8.84 |
| Median | 11.30 | 11.11 | 13.22 | 8.45 | 9.23 | 11.99 |
| 75% | 14.86 | 15.00 | 18.28 | 10.56 | 12.10 | 13.42 |
| Post-perihelion strands | ||||||
| kr statistics |
mr statistics |
|||||
| New | Int. | Old | New | Int. | Old | |
| N | 156.6 | 124.4 | 67.0 | 156.6 | 124.4 | 67.0 |
| Mean & SE | 12.55 ± 0.04 | 11.94 ± 0.04 | 13.83 ± 0.06 | 7.94 ± 0.02 | 8.72 ± 0.0.04 | 9.79 ± 0.04 |
| 25% | 9.61 | 9.51 | 10.28 | 5.76 | 6.84 | 7.03 |
| Median | 12.05 | 11.59 | 13.63 | 7.89 | 9.34 | 10.32 |
| 75% | 14.38 | 13.82 | 16.56 | 10.04 | 11.41 | 12.04 |
Notes. Statistics of kr and mr grouped by Oort group (new, intermediate and old comets) and orbital arc (pre- and post-perihelion). Statistical quantities listed are averages over 100 debiased strand samples (each may have different Oort group numbers). Mean, standard error on the mean (SE), median and 25% and 75% quartiles are in units of mag/log au.
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