A Study of the Nuclei of Earth-Approaching Comets

接近地球彗星核的研究

• 批准号: 9115580
• 负责人: Humberto Campins
• 金额: $ 11.76万
• 依托单位: University of Florida
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 1992
• 资助国家: 美国
• 起止时间: 1992-05-15 至 1996-04-30
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=9115580&HistoricalAwards=false
• 关键词: Study; Nuclei; Earth; Approaching; Comets

Dr. Campins will continue an ongoing study of Earth-approaching comets. This study involves an observational approach pioneered very successfully by Dr. Campins in the study of Comets Neujmin 1, Arend-Regaux, and Tempel 2. This approach employs simultaneous visible and infrared wavelength observations of comets that pass within 1.5 Astronomical Units of Earth. The observations will yield the size, albedo, color, rotational characteristics and approximate shape of the nuclei of several comets chosen for study. The results obtained from the previous study of three comets, and the results from Comet Halley, have provided tantalizing insights into the nature of cometary nuclei; however, the sample of properly observed comets consists of only four objects. The goal of this project is to double this number over the next three years. Knowledge of the nuclear properties for a statistically meaningful sample of comets will allow general conclusions to be drawn about the processes that determine these properties, and about the relationship between comets and other minor bodies in the Solar System, such as Earth-approaching asteroids, and meteorites.

坎平斯博士将继续对接近地球的彗星进行持续研究。这项研究涉及由Campins博士在研究Neujmin 1、Arend-Regaux和Tempel 2彗星时开创的非常成功的观测方法。该方法对经过地球1.5个天文单位范围内的彗星进行同时的可见光和红外波长观测。观测将得出几颗被选中进行研究的彗星的大小、反照率、颜色、旋转特征和大致形状。以前对三颗彗星的研究结果和哈雷彗星的研究结果，为彗核的性质提供了诱人的见解；然而，适当观测的彗星样本只包括四个物体。该项目的目标是在未来三年内将这一数字翻一番。对具有统计意义的彗星样本的核性质的了解将使人们能够得出关于决定这些性质的过程的一般性结论，以及关于彗星与太阳系其他较小天体之间的关系的结论，例如接近地球的小行星和陨石。