Formation of the binary near-Earth object 1996 FG3: Can binary NEOs be the source of short-CRE meteorites?

Details Formation of the binary near-Earth object 1996 FG3: Can binary NEOs be the source of short-CRE meteorites? Formation of the binary near-Earth object 1996 FG3: Can binary NEOs be the source of short-CRE meteorites?

Jun 2006

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2006m%26ps...41..875m&link_type=abstract

Meteoritics, vol. 41, Issue 6, p.875-887

Computer Science

5

Scientific paper

1996 FG3 is a binary near-Earth object (NEO) that was likely formed during a tidal disruption event. Our results indicate that the formation of this binary object was unlikely to have occurred when the progenitor had a encounter velocity with the Earth significantly smaller than its current value (10.7 km/s); The formation of the binary object on an orbit similar to the present one is possible, and the survival of the satellite constrains this to have happened less than 1.6 Ma ago. However, the binary object could also have been formed when the progenitor's encounter velocity with Earth was >12 km/s, and in this case we cannot constrain its formation age. Our results indicate that tidal disruptions occurring among NEOs with low velocity encounters with Earth are unlikely to produce long-lasting NEO binaries. Thus, tidal disruption may not be able to completely re-supply the observed population. This would imply that a significant fraction of the observed NEO binaries evolved out of the main asteroid belt. Overall, our results suggest to us that the CM2 meteorites having cosmic ray exposure (CRE) ages of ˜200,000 yr were likely liberated by the tidal disruption of a primitive NEO with a relative velocity with the Earth significantly smaller than that of 1996 FG3. We propose a list of such objects, although as far as we know, none of the candidates is a binary for the reasons described above.

Affiliated with

Also associated with

No associations

Rating

Formation of the binary near-Earth object 1996 FG3: Can binary NEOs be the source of short-CRE meteorites? 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 Formation of the binary near-Earth object 1996 FG3: Can binary NEOs be the source of short-CRE meteorites?, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Formation of the binary near-Earth object 1996 FG3: Can binary NEOs be the source of short-CRE meteorites? will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-1065147