What are the P-type Asteroids Made Of?The P-type asteroids, together with the D asteroids, had been believed to be one of the most primitive asteroid classes having surface materials rich in carbon and/or organics. Upon a fall of a new type of meteorite, Tagish Lake in 2000, we came to have a possible sample of the D (and/or T) asteroids. In both spectrally and distance from the sun, the P asteroids are located in between the C/G/B/F asteroids and the D asteroids. Because it is believed that the former group are similar to (thermally metamorphosed) CI/CM chondrites and the latter the Tagish Lake meteorite, the surface material of the P asteroids may be understood in combination of those two meteorite groups. Taking that direction, this paper presents possibly the first quantitative characterization of the P asteroids in terms of carbonaceous chondrites and their experimental derivatives.
Document ID
20040059603
Acquisition Source
Johnson Space Center
Document Type
Conference Paper
Authors
Hiroi, T. (Brown Univ. Providence, RI, United States)
Pieters, C. M. (Brown Univ. Providence, RI, United States)
Rutherford, M. J. (Brown Univ. Providence, RI, United States)
Zolensky, M. E. (NASA Johnson Space Center Houston, TX, United States)
Sasaki, S. (Tokyo Univ. Japan)
Ueda, Y. (Tokyo Univ. Japan)
Miyamoto, M. (Tokyo Univ. Japan)
Date Acquired
August 21, 2013
Publication Date
January 1, 2004
Publication Information
Publication: Lunar and Planetary Science XXXV: Asteroids, Meteors, and Comets