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Table 8

Results of the modified Spearman rank correlation analysis of the Plutino sample.

Parameters N  ⟨ ρ ⟩  P (Pσ)

physical parameters:
d/pV 17 0.217 (1.24)
d/η 7 0.806 (0.25)
pV/η 7 0.870 (0.16)
H/d 17 0.234 (1.19)
H/pV 17 0.468 (0.73)
H/η 7 0.868 (0.17)
orbital and physical parameters:
e/d 17 0.008 (2.67)
d/q 17 0.008 (2.67)
d/r 17 0.015 (2.43)
pV/r 17 0.711 (0.37)
color information, orbital and physical parameters:
s/r 13 0.038 (2.07)
s/d 13 0.025 (2.24)
s/H 13 0.523 (0.64)
(B − R)/d 13 0.082 (1.74)

Notes. N is the number of sample datapoints;  ⟨ ρ ⟩  and P are the most probable correlation coefficient and the probability of the most probable correlation coefficient to occur given no relationship in the sample (cf. text), respectively. The uncertainty of  ⟨ ρ ⟩  denotes its 68 % confidence level. Pσ is the significance expressed in terms of σ. We show only the results of parameter pairs which meet the following criteria: | ⟨ ρ ⟩|≥ 0.3 and P ≤ 0.1, or which are of special interest. Parameter pairs are sorted by parameter type. All correlation coefficients were calculated excluding Pluto. Correlation analyses taking η into account are based solely on the 7 floating-η fit solutions. In order to assess the effects of discovery bias, we include the heliocentric distance at the time of discovery r in our analysis. To improve the readability we refrain from listing all correlation values of the color indices with r and d. Instead we only show the correlation values of spectral slope with r and d, which gives similar results.

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