The Impact and Recovery of Asteroid 2008 TC3
[2008 October 7, 2:46 UT]
[Story of the recovery of 2008 TC3 (with images)]
Publications
2012 July 19 - What cratered the Moon also destroyed a dwarf planet. In a paper in MAPS, Matthias Meier and collaborators report that the Ureilite Parent Body was last broken 3.8 billion years ago, at the time of the Late Heavy Bombardment. This means that the asteroid family responsible for sending 2008 TC3 and other ureilites our way, is dynamically very old.
[Press Release]
[Full article]
2010 December 15 - Special issue online! The
Meteoritics and Planetary Science October/November 2010 double issue is devoted to the impact and recovery of 2008 TC3. The papers will appear online first on December 15.
NASA press release
NASA Goddard
Carnegie Institution of Washington
Point of Contact for media:
Rachel Hoover
NASA Ames Research Center (Public Affairs Office)
Tel.: 1-650-604-0643
Email: Rachel.L.Hoover [at] nasa.gov
Media access to papers, contact publisher:
Ben Norman
Life Science Publicist, Wiley-Blackwell
+44 (0) 1243 770 375 (U.K.)
Email: benorman [at] wiley.com
AGU Award: On December 15, at 7 pm, science journalist Roberta Kwok will be awarded a prestigious price by the American Geophysical Union for her Nature journal feature article on 2008 TC3. She will accept the price during an awards ceremony at the AGU General Assembly in San Francisco. [Press release]
Papers in special issue:
Other papers prepared for this special issue (update: 2011 January 15):
Papers accepted for next issue:
- Ross et al. - "MicroRaman spectroscopy of diamond in Almahata Sitta and comparisons with other ureilites"
- Kozubal et al. - "Photometric observations of Earth-impacting asteroid 2008 TC3"
Papers in review:
- Hoffmann et al. - "Magnetism and mineralogy of Almahata Sitta polymict ureilite: implications for the ureilite parent body magnetic field"
Other publications:
Jenniskens et al., 2009. "The impact and recovery of asteroid 2008 TC3". Nature magazine, March 26
Borovicka and Charvat, 2009. "Meteosat observation of the atmospheric entry of 2008 TC3 over Sudan and the associated dust cloud". Astron. Astrophys. 507, 2009, 1015-1022.
Meetings
2009 December 6 - A 2008 TC3 Workshop was held at the Physics Department of Khartoum University, Sudan, on December 6 - 7 of 2009, one year after the first find, to discuss the results from the analysis of 2008 TC3's impact and recovered remnants. Immediately
following, the Nubian Desert site was re-visited for an additional search to extend the range of meteorites recovered,
after which some of Sudan's amazing archeological sites were visited on the way back (Dec 8-15). The workshop website is at:
[Scientific program, abstracts, pictures]
Other meetings:
74th Annual Meeting of the Meteoritical Society, University of Greenwich, London, UK (August 8-12, 2011)
Asteroids, Comets, Meteors 2011, Niigata, Japan (July 17-22, 2011)
Abstracts are due March 21.
European Geosciences Union General Assembly 2011, Vienna, Austria (April 3-18, 2011)
Several abstracts on the analysis of AS meteorites have been submitted.
42nd LUNAR AND PLANETARY SCIENCE CONFERENCE, Woodlands, Texas (March 7-11, 2011)
Several abstracts on the analysis of AS meteorites have been submitted.
DPS/AAS MEETING PASSADENA, CA (October 4-8, 2010)
Several posters and one oral presentation were devoted to 2008 TC3.
73rd annual METEORITICAL SOCIETY MEETING in New York (July 26-30, 2010)
Six Almahata Sitta Consortium abstracts were submitted to the meeting from work by Mikouchi, Meier, Murty, Sandford, Ross and Kohout.
Update: Aidan Ross has won the prize for the best student abstract, for her abstract:
Raman analysis of diamond in Almahata Sitta and other ureilites (Ross, A. J., A. Steele, H. Downes, M. D. Fries, A. P. Jones, L. Kater, C. L. Smith, P. Jenniskens, M. H. Shaddad and M. Zolensky. 2010). 73rd Annual Meteoritical Society Meeting. Meteoritics & Planetary Science Vol. 45, Supplement, p. A174 [PDF]
Meteoroids 2010 (May 24-28, 2010)
An international conference on minor bodies in the solar system in Breckenridge, Colorado, will offered an opportunity to discuss results from the study of 2008 TC3 and its recovered fragments.
41st LUNAR AND PLANETARY SCIENCE CONFERENCE (March 1-5, 2010)
Papers on 2008 TC3 will be discussed at the LPSC
meeting in The Woodlands, Texas in March. A special session "Ureilite asteroids: Insights from Almahata Sitta" will be held on Tuesday March 2 at 1:30 pm (Waterway Ballroom 1). A poster session will follow that day at 7:00 pm in the Town Center Exhibit Area.
[Special Session program] ; [Program poster session]
AAS / DPS MEETING (OCTOBER 4-9, 2009)
A topical session on the impact and recovery of 2008 TC3 was held at the DPS
meeting in Puerto Rico on October 4-9, 2009, during the one-year aniversary of the fall.
[Program Topical Session]; [Abstracts]
Almahata Sitta Consortium
The following research teams (team lead given) are participating in a consortium established to coordinate the analysis of 2008 TC3 samples (POC) :
M. Shaddad U. of Khartoum Meteorite recovery # all samples
P. Jenniskens SETI Institute Meteorite recovery # selected samples
M. Zolensky NASA/JSC Petrograpy #1,4,7,15,25,27,47,A100,2,16,33,41,22,27,S138,
24,33,27,49,36,32,44,22
N. Kita U. Wisconsin-Madison SEM, EPMA, SIMS #44,36,51,54
I. Hope LLNL TEM,SEM #4,7
P. Warren UCLA SEM #1,27
D. Rumble Carnegie Inst. Oxygen isotopes #4,7,47,15,25,27,36,44,49,51,54,S138,22,24,A100,
29,31,32,34,37,42,46,48,16,41
J. Friedman Fordham U. Bulk chemistry (ICPMS) #4,7,47,15
S. Wolf Indiana St. Un. bulk chemistry (ICPMS) #4,7,47,15
J. Kucera Nuclear Phys. Inst., Czech Rep. multi-element analysis -.-
T. Hiroi Brown U. Reflection spectroscopy #4,7,25,27,47,19,32,36,44,50,51,22,16
S. Sandford NASA/Ames IR spectroscopy #4,7,15,19,24,25,27,28,29,
#31,32,34,36,37,39,42,44,46
#47,48,49,50,51,52,53,54
D. Lupishko Kharkiv, Ukraine polarimetry -.- [needs large sample]
A. Steele Carnegie Inst. Raman spectroscopy #7,#4
A. Morrow Stanford U. PAHs #1,4,7,15,25,27,47[....]
D. Glavin NASA/Goddard amino acids #4
A. Ross Nat Hist Museum carbon isotopes #4,7,22,36,44
H. Imanaka SETI Institute/LPL high res MS #22
K. Welten UC Berkeley Cosmic radio isotopes #4, 47,1,15,36,44,25,A100
C. Taricco Turin, Italy gamma-ray spectr. #15
R. Weiler Switzerland Nobel gasses #4, 47
S. Murty Navrangpura, India Nobel gasses #36, 44
U. Ott MPI fur Chemie, Mainz Nobel gasses #1,47
K. Nagao University of Tokyo Nobel gasses #1,47
B. Marty CRPG/CNRS, Nancy Nobel gasses #1,47
V. Hoffmann Univ. Muenich magnetic properties #4,39
T. Kohout Univ. Helsinki density, magn. susc. #22,27
G. Patesi Univ. Firenze cathodoluminescence -.- [needs large samples]
H. Chennaoui Hassan II Univ. cathodoluminescence -.- [needs thin section]
The following research teams are participating in the coordinated analysis
of observations of 2008 TC3 and the impact:
S. Larson Catalina Sky Survey 2008TC3: discovery
S. Chesley NASA/JPL 2008TC3: orbit, impact trajectory
P. Chodas NASA/JPL 2008TC3: orbit, impact
A. Fitzimmons Queens U. Belfast 2008TC3: spectroscopy
R. Dantowitz Clay Center Obs. 2008TC3: imaging
P. Pravec Ondrejov Observatory 2008TC3: rotation curve
P. Scheirich Ondrejov Observatory 2008TC3: shape model
J. Borovicka Ondrejov Observatory Impact: Meteosat 8 satelite data
M. Boslough Sandia Nat. Lab. Impact: USAF satellite data
P. Brown U. Western Ontario Impact: infrasound
W. Edwards U. Western Ontario Impact: dark flight
D. ReVelle Los Alamos Nat. Lab. Impact: modeling
O. Popova Inst. Geosc. Moscow Impact: modeling
J. Vaubaillon IMCCE, Paris Big picture: orbital dynamics
R. Binzel MIT Big picture: asteroid taxonomy
OVERVIEW OF RESEARCH ON ALMAHATA SITTA SAMPLES:
Number: Density (g/cm3) Spectral shape Albedo d17 d18 Petr. Min. Texture;Notes
[1] [2] [3] [4] [5] [6] [7]
Non-ureilite samples of 2008 TC3:
#16: 3.42+0.35/-0.17 -.- -.- -.- n -.- EH6 chondrite
#25: -.- strong pyroxene 0.23 3.2 4.3 y Prx H5 chondrite
#41: 3.16+0.12/-0.06 -.- -.- -.- n -.- EL6 chondrite
#A100: -.- -.- -.- -.- y -.- L4 chondrite
Ureilite samples:
#1: 1.77+1.08/-0.39 -.- -.- -.- y -.- layered
#4: 2.55+0.61/-0.26 flat spectrum 0.10 2.6 6.9 y Oli scruffy; *) **)
#7: -.- weak pyroxene 0.16 3.5 7.7 y Oli layered, porous
#13: -.- -.- -.- -.- n -.- full crust, oriented
#15: 3.11+0.14/-0.07 -.- -.- 2.6 6.8 y Mix gamma-ray
#19: -.- -.- -.- -.- n Oli (crumbs)
#22: 3.24+0.35/-0.17 -.- -.- -.- n -.-
#24: 2.72+0.31/-0.15 -.- -.- -.- n Oli (crumbs)
#27: 2.83+0.07/-0.03 weak pyroxene 0.10 1.7 5.9 y Oli flaky
#28: 2.57+0.25/-0.12 -.- -.- -.- n Oli ; weak band depth
#29: 2.81+0.16/-0.07 -.- -.- -.- n Mix (crumbs)
#31: 2.96+0.09/-0.05 -.- -.- -.- n Prx (crumbs)
#32: 2.98+0.26/-0.12 -.- -.- -.- n Oli (crumbs)
#33: 4.85+0.39/-0.17 -.- -.- -.- n -.- ureilite/kam-troilite
#34: 2.71+0.28/-0.13 -.- -.- -.- n Oli (crumbs)
#36: 2.67+0.14/-0.06 -.- -.- 1.3 5.3 n Mix fine grained **)
#37: -.- -.- -.- -.- n Oli (crumbs)
#39: -.- -.- -.- -.- n Oli single fragment
#42: 2.95+0.12/-0.06 -.- -.- -.- n Mix (crumbs)
#44: -.- -.- -.- 2.7 7.1 n Oli fragments only **)
#46: 2.82+0.17/-0.08 -.- -.- -.- n Oli (crumbs)
#47: 2.96+0.44/-0.21 weak pyroxene 0.11 3.3 8.0 y Oli weathered pieces **)
#48: 2.88+0.19/-0.09 -.- -.- -.- n Oli (crumbs)
#49: 2.55+2.66/-0.75 -.- -.- 2.6 6.9 n Oli (crumbs)
#50: 2.37+1.49/-0.52 -.- -.- -.- n Oli (crumbs)
#51: 2.70+0.49/-0.22 -.- -.- 0.9 5.3 n Prx (crumbs)
#52: 2.57+0.53/-0.12 -.- -.- -.- n Mix (crumbs)
#53: 2.40+0.23/-0.11 -.- -.- -.- n Oli (crumbs)
#54: 2.57+0.20/-0.09 -.- -.- 0.4 5.1 n Oli (crumbs)
#S138: -.- -.- -.- -.- y Oli ureilite
Ref.:
*) amino acid analyis
**) cosmic ray and nobel gasses
[1] Densities measured by Jenniskens using sand method (Shaddad et al., 2010)
[2] From data by Hiroi et al. (2010)
[3] From data by Hiroi et al. (2010)
[4] From data by Rumble et al. (2010)
[5] Petrographic study done, from data by Zolensky et al. (2010)
[6] Dominant mineral type determined by mid-IR spectroscopy, data by Sandford et al. (2010)
[7] Typing from petrography by Zolensky; Descriptions from photographs by Jenniskens
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