Investigation of Asteroid Families and Shapes

小行星家族和形状的调查

• 批准号: 9318674
• 负责人: Michael Gaffey
• 金额: $ 30万
• 依托单位: Rensselaer Polytechnic Institute
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 1994
• 资助国家: 美国
• 起止时间: 1994-01-15 至 1998-03-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=9318674&HistoricalAwards=false
• 关键词: Investigation; Asteroid; Families; Shapes

9318674 Gaffey Investigations of Asteroid Families and Shapes. Most asteroids are fragments of collisionally disrupted planetesimals, and many asteroid families are such disrupted bodies in an early stage of dispersal. Investigations of individual parent body fragments and of asteroid families provide information on the early inner Solar System transient thermal events which heated their parent bodies, the internal structures of their parent planetesimals resulting from planetary differentiation, and the large scale collisions which fragmented them. Dr. Gaffey will conduct observations to investigate asteroid shapes and asteroid families. Mineralogic compositions of asteroid family members will be determined from spectra to test the genetic models of asteroid families, to identify interlopers within families, to test the reality of proposed families with small memberships, to constrain the lifetimes of asteroid families, and to evaluate the internal structure of the parent planetesimals of interesting and important families.

小行星9318674 小行星家族和小行星的研究。 大多数小行星都是碰撞破裂的星子的碎片，许多小行星家族都是这种处于分散早期阶段的破裂体。 对单个母体碎片和小行星家族的研究提供了早期内太阳系瞬时热事件的信息，这些事件加热了它们的母体，它们的母体微行星的内部结构来自行星分化，以及使它们破碎的大规模碰撞。 加菲博士将进行观测，以调查小行星的形状和小行星家族。 将从光谱中确定小行星家族成员的矿物学组成，以检验小行星家族的遗传模型，查明家族内的闯入者，检验成员较少的拟议家族的现实性，限制小行星家族的寿命，并评价重要家族的母星子的内部结构。