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6 Hebe
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==Physical characteristics== [[File:Not the mother of meteorites.jpg|left|thumb|Simulations (top) and direct images (bottom) of 6 Hebe<ref name=mother/>]] [[File:Moon and Asteroids 1 to 10.svg|thumb|left|Size comparison: the first 10 asteroids profiled against the [[Moon]]. Hebe is sixth from the left.]] Hebe is a large asteroid, with a volume-equivalent [[spheroid]]al diameter of {{convert|193|±|6|km|mi}}. Though Hebe's shape approximates an oblate spheroid, it hosts numerous extreme topographical features. Five large depressions have been identified on its surface, possibly representing deep [[impact crater]]s.<ref name="Marsset2017"/>{{rp|4–6}} The depressions range from around {{convert|50|km|mi|abbr=on}} to over {{convert|100|km|mi|abbr=on}} in size, with depths between {{convert|7|and|18|km|mi}}.<ref name="Marsset2017"/>{{rp|6}} Hebe additionally has a large, flattened face, giving it the appearance of a "lopped-off tooth". This large facet may represent a section of the asteroid that was blasted away into space by an ancient [[impact event]].<ref name="Fieber-Beyer2020"/>{{rp|9}} Based on Hebe's [[lightcurve]], or variations in its observed brightness, it rotates in a [[prograde and retrograde motion|prograde]] (counterclockwise) direction with a rotation period of 7.27 hours. Its north pole pointing towards [[ecliptic coordinate system|ecliptic coordinates]] (β, λ) = (45°, 339°) with a 10° uncertainty.<ref name=Torppa2003 />{{rp|349}} ===Spectrum and composition=== Hebe is classified as an [[S-type asteroid]]<ref name="Migliorini1997"/>{{rp|104}} under the [[Tholen classification]] scheme.<ref name="DeMeo2015"/> Planetary scientist [[Michael James Gaffey]] further subdivided S-type asteroids into seven mineralogical subclasses,<ref name="Gaffey1993b"/> categorizing Hebe as an S(IV)-type asteroid. Hebe's S(IV) classification indicates its surface is silicate (or stony) in composition and [[planetary differentiation|undifferentiated]] or partially differentiated.<ref name="Gaffey1998"/>{{rp|1282}}
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