Mass
In 2000, Michalak estimated Hestia to have a mass of 3.5×1018 kg.
Even though Hestia is only about 124 km in diameter, in 1997, Bange and Bec-Borsenberger estimated Hestia as having a mass of 2.1×1019 kg, based on a perturbation by 19 Fortuna. This older 1997 estimate would give it a density of 14+ g/cm³ and make Hestia more massive than several much larger asteroids.
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