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Table 2

Period, spin (ECJ2000 longitude λ, latitude β and initial Julian date T0), and dimensions (volume-equivalent diameter D, volume V, and tri-axial ellipsoid diameters a, b, c along principal axes of inertia) of Hebe derived with ADAM.

Parameter Value Value Unc. Unit
(all AO) (SPHERE-only)

Period 7.274467 7.274465 5 × 10-5 hour
λ 341.7 343.2 3 deg.
β +49.9 +46.8 4 deg.
T0 2434569.00 2434569.00

D 196 193 6 km
V 3.95 × 106 3.75 × 106 1.2 × 105 km3
a 218.4 213.4 6.0 km
b 206.2 200.2 6.0 km
c 172.1 172.6 6.0 km
a/b 1.06 1.07 0.04
b/c 1.20 1.16 0.05

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