In this paper, we study the behavior of singular values Hankel operators on weighted Bergman spaces Aωφ2, where ωφ=e−φ and φ is a subharmonic function. We consider compact Hϕ‾, with anti-analytic symbols ϕ‾, give estimates trace h(|Hϕ‾|) for any convex function h. This allows us to asymptotic (sn(Hϕ‾))n in terms nonincreasing rearrangement |ϕ′|/Δφ respect an adequate measure. For radial weights...