A near-Earth asteroid population estimate from the LINEAR survey

被引:76
作者
Stuart, JS [1 ]
机构
[1] MIT, Lincoln Lab, Lexington, MA 02421 USA
关键词
D O I
10.1126/science.1065318
中图分类号
O [数理科学和化学]; P [天文学、地球科学]; Q [生物科学]; N [自然科学总论];
学科分类号
07 ; 0710 ; 09 ;
摘要
I estimate the size and shape of the near-Earth asteroid (NEA) population using survey data from the Lincoln Near-Earth Asteroid Research (LINEAR) project, covering 375,000 square degrees of sky and including more than 1300 NEA detections. A simulation of detection probabilities for different values of orbital parameters and sizes combined with the detection statistics in a Bayesian framework provides a correction for observational bias and yields the NEA population distribution as a function of absolute magnitude, semi-major axis, eccentricity, and inclination. The NEA population is more highly inclined than previously estimated, and the total number of kilometer-sized NEAs is 1227(-90)(+170) (1 sigma).
引用
收藏
页码:1691 / 1693
页数:3
相关论文
共 6 条
[1]   Understanding the distribution of near-Earth asteroids [J].
Bottke, WF ;
Jedicke, R ;
Morbidelli, A ;
Petit, JM ;
Gladman, B .
SCIENCE, 2000, 288 (5474) :2190-2194
[2]  
BOTTKE WF, IN PRESS ICARUS
[3]  
Opik E.J., 1951, Proc. R. Ir. Acad. Sect. A Math. Phys. Sci. JSTOR, V54, P165
[4]   A reduced estimate of the number of kilometre-sized near-Earth asteroids [J].
Rabinowitz, D ;
Helin, E ;
Lawrence, K ;
Pravdo, S .
NATURE, 2000, 403 (6766) :165-166
[5]  
Shoemaker E.M., 1990, GEOL SOC AM SPEC PAP, V247, P155, DOI [10.1130/SPE247-p155, DOI 10.1130/SPE247-P155]
[6]   Lincoln Near-Earth Asteroid Program (LINEAR) [J].
Stokes, GH ;
Evans, JB ;
Viggh, HEM ;
Shelly, FC ;
Pearce, EC .
ICARUS, 2000, 148 (01) :21-28