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Table 1.

Ellipsoidal shape of Phoebe.

References Castillo-Rogez et al. (2012) Thomas et al. (2018) This paper
(axi-symmetric)
Mean radius (km) 106.5 ± 0.7 106.4 ± 0.4 106.4 ± 0.5
a (km) 109.3 ± 0.6 109.3 ± 0.9 109.7 ± 0.5
b (km) 108.4 ± 1.4 108.4 ± 0.4
c (km) 101.8 ± 0.3 101.8 ± 0.2 101.2 ± 0.5
(km) 7.1 ± 1.0 7.1 ± 0.7 8.5 ± 0.7
a − b (km) 0.9 ± 1.5 0.9 ± 1.00

Notes. The uncertainties in Castillo-Rogez et al. (2012) and in Thomas et al. (2018) did not take into account the heavily crater surface and as argued in Castillo-Rogez et al. (2012) the estimated uncertainties is around 2 km. The quantity corresponds to (a + b)/2. In the column Thomas et al. (2018), we invert the a and b values.

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