More Results from a Long-Term Radar Survey of M-Class Asteroids.

Details More Results from a Long-Term Radar Survey of M-Class Asteroids. More Results from a Long-Term Radar Survey of M-Class Asteroids.

Sep 2006

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2006dps....38.7101s&link_type=abstract

American Astronomical Society, DPS meeting #38, #71.01; Bulletin of the American Astronomical Society, Vol. 38, p.626

Astronomy and Astrophysics

Astronomy

Scientific paper

We present more results from our long-term radar survey of main-belt M-class asteroids. Because metals are denser and more radar reflective than silicates, an asteroid's radar cross-section can provide unambiguous information on its composition and near surface porosity [1]. The composition of this enigmatic class has important implications for the structure and evolution of the asteroid belt. As of July 2006 the following twelve main-belt M-class asteroids had been observed with radar: 16 Psyche [2,3,5], 21 Lutetia [3,5], 22 Kalliope [3], 83 Beatrix [4], 97 Klotho [3], 129 Antigone [5], 135 Hertha [5], 224 Oceana [5], 325 Heidelberga [5], and 785 Zwetana [5], 216 Kleopatra [4], and 796 Sarita [3]. Only one-third of this sample -- 16 Psyche, 129 Antigone, 216 Kleopatra and 785 Zwetana -- have radar albedos unambiguously consistent with metallic compositions [1,5]. Our goal is to triple the number of radar observed M-class targets within the next five years. We will present results focusing on the unusual radar variability of 129 Antigone.
Acknowledgements. This work was partially supported by a grant from Bloomsburg University to MKS and NSF grant AST-0605903. The Arecibo Observatory is part of the National Astronomy and Ionosphere Center, which is operated by Cornell University under a cooperative agreement with the National Science Foundation.
[1] Ostro et al. Science 252, 1399-1404, 1991. [2] Ostro et al. Science 229,442-446, 1985. [3] Magri et al. Icarus 140, 379-407, 1999. [4] Magri et al. submitted to Icarus. [5] Shepard et al in prep.

Affiliated with

Also associated with

No associations

Rating

More Results from a Long-Term Radar Survey of M-Class Asteroids. does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.

If you have personal experience with More Results from a Long-Term Radar Survey of M-Class Asteroids., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and More Results from a Long-Term Radar Survey of M-Class Asteroids. will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-1078194