Spherical harmonic models of the gravitational field and shape of (101955) Bennu

Provided are (i) three types of spherical harmonic models of the gravitational field of Bennu, (ii) reference gravitational data and (iii) a spherical harmonic model of Bennu's shape. The gravitational field models and the reference data were obtained by gravity forward modelling using a degree-15 spherical harmonic expansion of Bennu's shape and a constant mass density. The datasets have been published in Bucha, B., Sanso, F., 2021. <em>Gravitational field modelling near irregularly shaped bodies using spherical harmonics: a case study for the asteroid (101955) Bennu</em>. Journal of Geodesy, 95, 56, https://link.springer.com/article/10.1007/s00190-021-01493-w本数据集包含三类贝努（Bennu）小行星重力场球谐模型（spherical harmonic models）、参考重力数据，以及一套贝努小行星形状的球谐模型。上述重力场模型与参考数据，通过以贝努小行星形状为基础的15阶球谐展开（spherical harmonic expansion）与恒定质量密度的重力正演模拟（gravity forward modelling）方法获取。该数据集已发表于Bucha B、Sanso F于2021年发表的论文《利用球谐函数开展不规则形状天体附近重力场建模——以(101955)贝努小行星为例》（*Gravitational field modelling near irregularly shaped bodies using spherical harmonics: a case study for the asteroid (101955) Bennu*），刊载于《大地测量学杂志》（*Journal of Geodesy*）第95卷第56期，链接地址为：https://link.springer.com/article/10.1007/s00190-021-01493-w