Roberto Gorelli points our attention at a recently published meteor related paper:
Exoatmospheric detection of a meter-sized Earth impactor
This article has been submitted for publication by David L. Clark, Paul A. Wiegert, Peter G. Brown, Denis Vida, Aren Heinze, and Larry Denneau.
Abstract: On 2020 September 18 US Government sensors detected a bolide with peak bolometric magnitude of -19 over the western Pacific. The impact was also detected by the Geostationary Lightning Mapper (GLM) instrument on the GOES-17 satellite and infrasound sensors in Hawaii. The USG measurements reported a steep entry angle of 67°
from horizontal from a radiant 13° E of N and an impact speed of 11.7 km/s. Interpretation of all energy yields produces a preferred energy estimate of 0.4 KT TNT, corresponding to a 23000 kilogram 3 meter diameter meteoroid. A post-impact search of telescopic images found that the ATLAS survey captured the object just 10 minutes prior to impact at an Earthcentred distance of nearly 11900 kilometers with apparent magnitude m=12.5. The object appears as a 0.44° streak originating on the eastern edge of the image extending one-third of the predicted (based on the CNEOS state vector) 1.26° over the 30 second exposure. The streak shows brightness variability consistent with small asteroid rotation. The position of Earth’s shadow, the object’s size, and its consistency with the CNEOS state vector confirm the object is likely natural. This is the sixth exoatmospheric detection of an NEA impactor and the closest initial telescopic detection prior to an impact. The high altitude of peak fireball brightness suggest it was a weak object comparable in many respects with 2008 TC3 (Almahatta Sitta meteorite), with an absolute magnitude of H = 32.5 and likely low albedo. Therefore we suggest the NEA as having been a C-complex asteroid.
You can download this paper for free: https://arxiv.org/pdf/2209.04583.pdf (24 pages).
Older meteor library news:
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- Ejby—A new H5/6 ordinary chondrite fall in Copenhagen, Denmark, by by H. Haack, A. N. Sørensen, A. Bischoff, M. Patzek, J.-A. Barrat, S. Midtskogen, E. Stempels, M. Laubenstein, R. Greenwood, P. Schmittkopplin, H. Busemann, C. Maden, K. Bauer, P. Morina, M. Schönbächler, P. Voss and T. Dahl-Jensen. (2 February 2021).
- The Great Chinese Fireball of December 22, 2020, by Albino Carbognani. (7 January 2021).
- Trajectory and orbit of the unique carbonaceous meteorite Flensburg, by Jiří Borovička, Felix Bettonvil, Gerd Baumgarten, Jörg Strunk, Mike Hankey, Pavel Spurný, and Dieter Heinlein. (7 January 2021).
- Remarks on generating realistic synthetic meteoroid orbits, by T. J. Jopek. (6 January 2021).
- FRIPON: A worldwide network to track incoming meteoroids, by F. Colas, B. Zanda, S. Bouley, S. Jeanne, A. Malgoyre, M. Birlan, C. Blanpain, J. Gattacceca, L. Jorda, J. Lecubin, C. Marmo, J.L. Rault, J. Vaubaillon, P. Vernazza, C. Yohia, D. Gardiol, A. Nedelcu, B. Poppe, J. Rowe, M. Forcier, D. Koschny, J.M. Trigo-Rodriguez, H. Lamy, R. Behrend, L. Ferrière, D. Barghini, A. Buzzoni, A. Carbognani, M. Di Carlo, M. Di Martino, C. Knapic, E. Londero, G. Pratesi, S. Rasetti, W. Riva, G.M. Stirpe, G.B. Valsecchi, C.A. Volpicelli, S. Zorba, D. Coward, E. Drolshagen, G. Drolshagen, O. Hernandez, E. Jehin, M. Jobin, A. King, C. Nitschelm, T. Ott, A. Sanchez-Lavega, A. Toni, P. Abraham, F. Affaticati, M. Albani, A. Andreis, T. Andrieu, S. Anghel, E. Antaluca, K. Antier, T. Appéré, A. Armand, G. Ascione, Y. Audureau, G. Auxepaules, T. Avoscan, D. Baba Aissa, P. Bacci, O. Badescu, R. Baldini, R. Baldo58, Balestrero, D. Baratoux, E. Barbotin, M. Bardy, S. Basso, O. Bautista, L. D. Bayle, P. Beck, R. Bellitto, R. Belluso, C. Benna, M. Benammi, E. Beneteau, Z. Benkhaldoun, P. Bergamini, F. Bernardi, M.E. Bertaina, P. Bessin, L. Betti, F. Bettonvil, D. Bihel, C. Birnbaum, O. Blagoi, E. Blouri, I. Boaca, R. Boata, B. Bobiet, R. Bonino, K. Boros, E. Bouchet, V. Borgeot, E. Bouchez, D. Boust, V. Boudon, T. Bouman, P. Bourget, S. Brandenburg, Ph. Bramond, E. Braun, A. Bussi, P. Cacault, B. Caillier, A. Calegaro, J. Camargo, S. Caminade, A.P.C. Campana, P. Campbell-Burns, R. Canal-Domingo, O. Carell, S. Carreau, E. Cascone, C. Cattaneo, P. Cauhape, P. Cavier, S. Celestin, A. Cellino, M. Champenois, H. Chennaoui Aoudjehane, S. Chevrier, P. Cholvy, L. Chomier, A. Christou, D. Cricchio, P. Coadou, J.Y. Cocaign, F. Cochard, S. Cointin, E.. Colombi, J. P. Colque Saavedra, L. Corp, M. Costa, F. Costard, M. Cottier, P. Cournoyer, E. Coustal, G. Cremonese, O. Cristea, J.C. Cuzon, G. D’Agostino, k. Daiffallah, C. Danescu, A. Dardon, T. Dasse, C. Davadan, V. Debs, J.P. Defaix, F. Deleflie, M. D’Elia, P. De Luca, P. De Maria, P. Deverchère, H. Devillepoix, A. Dias, A. Di Dato, R. Di Luca, F.M. Dominici, A. Drouard, J.L. Dumont, P. Dupouy, L. Duvignac, A. Egal, N. Erasmus, N. Esseiva, A. Ebel, B. Eisengarten, F. Federici, S. Feral, G. Ferrant, E. Ferreol, P. Finitzer, A. Foucault, P. Francois, M. Frîncu, J.L. Froger, F. Gaborit, V. Gagliarducci, J. Galard, A. Gardavot, M. Garmier, M. Garnung, B. Gautier, B. Gendre, D. Gerard, A. Gerardi, J.P. Godet, A. Grandchamps, B. Grouiez, S. Groult, D. Guidetti, G. Giuli, Y. Hello, X. Henry, G. Herbreteau, M. Herpin, P. Hewins, J.J. Hillairet, J. Horak, R. Hueso, E. Huet, S. Huet, F. Hyaumé, G. Interrante, Y. Isselin, Y. Jeangeorges, P. Janeux, P. Jeanneret, K. Jobse, S. Jouin, J.M. Jouvard, K. Joy, J.F. Julien, R. Kacerek, M. Kaire, M. Kempf, D. Koschny, C. Krier, M.K. Kwon, L. Lacassagne, D. Lachat, A. Lagain, E. Laisné, V. Lanchares, J. Laskar, M. Lazzarin, M. Leblanc, J.P. Lebreton, J. Lecomte, P. Le Dû, F. Lelong, S. Lera, J.F. Leoni, A. Le-Pichon, P. Le-Poupon, A. Leroy, G. Leto, A. Levansuu, E. Lewin, A. Lienard, D. Licchelli, H. Locatelli, S. Loehle, D. Loizeau, L. Luciani, M. Maignan, F. Manca, S. Mancuso, E. Mandon, N. Mangold, F. Mannucci, L. Maquet, D. Marant, Y. Marchal, J.L. Marin, J.C. Martin-Brisset, D. Martin, D. Mathieu, A. Maury, N. Mespoulet, F. Meyer, J.Y. Meyer, E. Meza, V. Moggi Cecchi, J.J. Moiroud, M. Millan, M. Montesarchio, A. Misiano, E. Molinari, S. Molau, J.Monari, B. Monflier, A. Monkos, M. Montemaggi, G. Monti, R. Moreau, J. Morin, R. Mourgues, O. Mousis, C. Nablanc, A. Nastasi, L., Niacsu, P. Notez, M. Ory, E. Pace, M.A. Paganelli, A. Pagola, M. Pajuelo, J.F. Palacián, G. Pallier, P. Paraschiv, R. Pardini, M. Pavone, G. Pavy, G. Payen, A. Pegoraro, E. Peña-Asensio, L. Perez, S. Pérez-Hoyos, V. Perlerin, A. Peyrot, F. Peth, V. Pic, S. Pietronave, C. Pilger, M. Piquel, T. Pisanu, M. Poppe, L. Portois, J.F. Prezeau, N. Pugno, C. Quantin, G. Quitté, N. Rambaux, E. Ravier, U. Repetti, S. Ribas, C. Richard, D. Richard, M. Rigoni, J.P. Rivet, N. Rizzi, S. Rochain, J.F. Rojas, M. Romeo, M. Rotaru, M. Rotger, P. Rougier, P. Rousselot, J. Rousset, D. Rousseu, O. Rubiera, R. Rudawska, J. Rudelle, J.P. Ruguet, P. Russo, S. Sales, O. Sauzereau, F. Salvati, M. Schieffer, D. Schreiner, Y. Scribano, D. Selvestrel, R. Serra, L. Shengold, A. Shuttleworth, R. Smareglia, S. Sohy, M. Soldi, R. Stanga, A. Steinhausser, F. Strafella, S. Sylla Mbaye, A.R.D. Smedley, M. Tagger, P. Tanga, C. Taricco, J.P. Teng, J.O. Tercu, O. Thizy, J.P. Thomas, M. Tombelli, R. Trangosi, B. Tregon, P. Trivero, A. Tukkers, V. Turcu, G. Umbriaco, E. Unda-Sanzana, R. Vairetti, M. Valenzuela, G. Valente, G. Varennes, S. Vauclair, J. Vergne, M. Verlinden, M. Vidal-Alaiz, R. Vieira-Martins, A. Viel, D.C. Vîntdevara, V. Vinogradoff, P. Volpini, M. Wendling, P. Wilhelm, K. Wohlgemuth, P. Yanguas, R. Zagarella, and A. Zollo.. (2 December 2020).
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- Velocity distribution of larger meteoroids and small asteroids impacting Earth, by Esther Drolshagen, Theresa Ott, Detlef Koschny, Gerhard Drolshagen, Anna Kristiane Schmidt, and Björn Poppe. (14 November 2020).
- Satellite observation of the dust trail of a major bolide event over the Bering Sea on December 18, 2018, by J. Borovička, M. Setvák, H. Roesli, and J. K. Kerkmann. (26 October 2020).
- Effect of the surface shape of a large space body on its fragmentation in a planetary atmosphere, by Daniil E. Khrennikov, Andrei K. Titov, Alexander E. Ershov, Andrei B. Klyuchantsev, Vladimir I. Pariev, and Sergei V. Karpov. (5 October 2020).
- On the possibility of through passage of asteroid bodies across the Earth’s atmosphere, by Daniil E. Khrennikov, Andrei K. Titov, Alexander E. Ershov, Vladimir I. Pariev, and Sergei V. Karpov. (1 October 2020).
- Machine Learning for Semi-Automated Meteorite Recovery, by Seamus Anderson, Martin Towner, Phil Bland, Christopher Haikings, William Volante, Eleanor Sansom, Hadrien Devillepoix, Patrick Shober, Benjamin Hartig, Martin Cupak, Trent Jansen Sturgeon, Robert Howie, Gretchen Benedix, Geoff Deacon. (30 September 2020).
- Murrili Meteorite’s fall and recovery from Kati Thanda, by Eleanor K. Sansom, Philip A. Bland, Martin C. Towner, Hadrien A. R. Devillepoix, Martin Cupak, Robert M. Howie, Trent Jansen-Sturgeon, Morgan A. Cox, Benjamin A. D. Hartig, Jonathan P. Paxman, Gretchen Benedix, and Lucy Forman. (22 September 2020).
- Modeling the past and future activity of the Halleyids meteor showers, by A. Egal, P. Wiegert, P. G. Brown, M. Campbell-Brown, and D. Vida. (8 August 2020).
- Analysis of the dynamical evolution of the Quadrantid meteoroid stream, by G.E. Sambarov, T.Yu. Galushina and O.M. Syusina. (12 August 2020).
- 138175 (2000 EE104) and the Source of Interplanetary Field Enhancements, by David Jewitt. (14 July 2020).
- Comparing the reflectivity of ungrouped carbonaceous chondrites with that of short period comets like 2P/Encke, by Safoura Tanbakouei, Josep M. Trigo-Rodríguez, Jürgen blum, Iwan Williams and Jordi Llorca. (13 July 2020).
- Coordinated Optical and Radar measurements of Low Velocity Meteors, by Peter Brown and Robert J. Weryk. (8 July 2020).
- Meteors – light from comets and asteroids, by Pavol Matlovič and Juraj Tóth. (8 July 2020).
- Forbidden mass ranges for shower meteoroids, by Althea V. Moorhead. (26 June 2020).
- Frequency shifts of head echos in meteoroid trail formation, by Hans Wilschut. (30 June 2020).
- Precision measurements of radar transverse scattering speeds from meteor phase characteristics, by Michael Mazur, Petr Pokorný, Peter Brown, Robert J. Weryk, Denis Vida, Carsten Schult, Gunter Stober, Anamika Agrawal. (25 June 2020).
- Testing the Radiation Pattern of Meteor Radio Afterglow, by S. S. Varghese, K. S. Obenberger, G. B. Taylor and J. Dowell. (25 June 2020).
- The dynamical evolution and the force model for asteroid (196256) 2003 EH1, by T.Yu. Galushina, G.E. Sambarov. (24 June 2020).
- A Global Fireball Observatory, by H. A. R. Devillepoix, M. Cupák, P. A. Bland, E. K. Sansom, M. C. Towner, R. M. Howie, B. A. D. Hartig, T. Jansen-Sturgeon, P. M. Shober, S. L. Anderson, G. K. Benedix, D. Busan, R. Sayers, P. Jenniskens, J. Albers, C. D. K. Herd, P. J. A. Hill, P. G. Brown, Z. Krzeminski, G. R. Osinski, H. Chennaoui Aoudjehane, Z. Benkhaldoun, A. Jabiri, M. Guennoun, A. Barka, H. Darhmaouij, L. Daly, G. S. Collins, S. McMullan, M. D. Suttle, T. Ireland, G. Bonning, L. Baeza, T. Y. Alrefay, J. Horner, T. D. Swindle, C. W. Hergenrother, M. D. Fries, A. Tomkins, A. Langendam, T. Rushmer, C. O’Neill, D. Janches, J. L. Hormaechea, C. Shaw, J. S. Young, M. Alexander, A. D. Mardon and J. R. Tate. (12 June 2020).
- Activity of the Eta-Aquariid and Orionid meteor showers, by A. Egal, P. G. Brown, J. Rendtel, M. Campbell-Brown, and P. Wiegert (16 June 2020).
- Dynamics of spherical space debris of different sizes falling to Earth, by Judit Slíz-Balogh, Dániel Horváth, Róbert Szabó and Gábor Horváth (3 June 2020).
- Near-infrared observations of active asteroid (3200) Phaethon reveal no evidence for hydration, by Driss Takir, Theodore Kareta, Joshua P. Emery, Josef Hanuš , Vishnu Reddy, Ellen S. Howell, Andrew S. Rivkin & Tomoko Arai (1 May 2020).
- Measuring Fluxes of Meteor Showers with the NASA All-Sky Fireball Network, by Steven Ehlert and Rhiannon Blaauw Erskine (20 April 2020).
- Where did they come from, where did they go. Grazing fireballs, by P. M. Shober, T. Jansen-Sturgeon, E. K. Sansom, H.A.R. Devillepoix, M.C. Towner, P.A. Bland, M. Cupák, R.M. Howie, and B.A.D. Hartig (12 April 2020).
- The Quadrantids and December alpha Draconids 2012-2019 – Multi-year Meteor Videography, by Alex Pratt (9 April 2020).
- Characterization of the June epsilon Ophiuchids meteoroid stream and the comet 300P/Catalina, by Pavol Matlovič, Leonard Kornoš, Martina Kováčová, Juraj Tóth and Javier Licandro (7 April 2020).
- The hazard from fragmenting comets, by W.M. Napier (7 April 2020).
- A Real-Time Search for Interstellar Impacts on the Moon, by Amir Siraj and Abraham Loeb (7 April 2020).
- A Global Fireball Observatory, by H. A. R. Devillepoix, M. Cupák, , P. A. Bland, , E. K. Sansom, M. C. Towner, R. M. Howie, B. A. D. Hartig, T. Jansen-Sturgeon, P. M. Shober, S. L. Anderson, G. K. Benedix, D. Busan, R. Sayers, P. Jenniskens, J. Albers, C. D. K. Herd, P. Carlson, P. J. A. Hill, P. G. Brown, Z. Krzeminski, G. R. Osinski, H. Chennaoui Aoudjehane, T. Shisseh, Z. Benkhaldoun, A. Jabiri, M. Guennouni, A. Barka, H. Darhmaoui, L. Daly, G. S. Collins, S. McMullan, M. D. Suttle, C. Shaw, J. S. Younga, M. Alexander, A. D. Mardon, T. Ireland, G. Bonning, L. Baeza, T. Y. Alrefay, J. Horner, T. D. Swindle, C. W. Hergenrother, M. D. Fries, A. Tomkins, A. Langendam, T. A. Rushmer, C. O’Neill, D. Janches and J. L. Hormaechea (3 April 2020).
- Realistic gravitational focusing of meteoroid streams, by Althea V. Moorhead, Tiffany D. Clements, and Denis Vida (14 March 2020).
- On the delivery of DART-ejected material from asteroid (65803) Didymos to Earth, by Paul Wiegert (5 March 2020).
- Physically based alternative to the PE criterion for meteoroids, by Manuel Moreno-Ibáñez, Maria Gritsevich, Josep M. Trigo-Rodríguez, Elizabeth A. Silber. (3 March 2020).
- Hemolithin: a Meteoritic Protein containing Iron and Lithium, by Malcolm. W. McGeoch, Sergei Dikler and Julie E. M. McGeoch (28 February 2020).
- Orbital dynamics of highly probable but rare Orionid outbursts possibly observed by the ancient Maya, by J. H. Kinsman and D. J. Asher (22 February 2020).
- A new method for measuring the meteor mass index: application to the 2018 Draconid meteor shower outburst, by D. Vida, M. Campbell-Brown, P. G. Brown, A. Egal, and M. J. Mazur (11 February 2020).
- A Two Year Survey for VLF Emission from Fireballs, by C. Y. Sung, P. Brown and R. Marshall (11 February 2020).
- Observational Signatures of Sub-Relativistic Meteors, by Amir Siraj and Abraham Loeb (6 February 2020).
- Supercatastrophic disruption of asteroids in the context of SOHO comet, fireball and meteor observations, by Paul Wiegert, Peter Brown, Petr Pokorny, Quanzhi Ye, Cole Gregg, Karina Lenartowicz, Zbigniew Krzeminski and David Clark. (28 January 2020).
- Physical properties of Taurid meteoroids of various sizes, by Jiří Borovička and Pavel Spurný. (27 January 2020).
- The orbital clusters among the near Earth asteroids, by Tadeusz J. Jopek. (27 January 2020).
- Parker Solar Probe Observations of a Dust Trail in the Orbit of (3200) Phaethon, by Karl Battams, Matthew M. Knight, Michael S.P. Kelley, Brendan M. Gallagher, Russell A. Howard, and Guillermo Stenborg. (22 December 2019).
- Meteoroid Stream Formation Due to the Extraction of Space Resources from Asteroids, by Logan Fladeland, Aaron C. Boley, and Michael Byers. (2 December 2019).
- Estimating trajectories of meteors: an observational Monte Carlo approach – II. Results, by Denis Vida, Peter G. Brown, Margaret Campbell-Brown, Paul Wiegert and Peter S. Gural. (27 November 2019).
- Estimating trajectories of meteors: an observational Monte Carlo approach – I. Theory, by Denis Vida, Peter S. Gural, Peter G. Brown, Margaret Campbell-Brown and Paul Wiegert. (11 November 2019).
- Meteor shower activity profiles and the use of orbital dissimilarity (D) criteria, by Althea V. Moorhead. (25 October 2019).
- A fireball and potentially hazardous binary near-Earth asteroid (164121) 2003 YT1, by Toshihiro Kasuga, Mikiya Sato, Masayoshi Ueda, Yasunori Fujiwara, Chie Tsuchiya, and Jun-ichi Watanabe. (18 October 2019).
- Spectral and orbital survey of medium-sized meteoroids, by Pavol Matlovic, Juraj Tóth, Regina Rudawska, Leonard Kornoš and Adriana Pisarcíková. (7 August 2019).
- Rising from Ashes or Dying Flash? Mega Outburst of Small Comet 289P/Blanpain in 2013, by Quanzhi Ye (叶泉志) and David L. Clark. (19 June 2019).
- Discovery of a Meteor of Interstellar Origin, by Amir Siraj and Abraham Loeb. (10 June 2019).
- A Mathematical Model for Simulating Meteor Showers, by M. Cardinot and A. Namen. (4 June 2019).
- The 2019 Taurid resonant swarm: prospects for ground detection of small NEOs, by David Clark, Paul Wiegert and Peter G. Brown. (28 May 2019).
- Analysis of the June 2, 2016 bolide event over Arizona, by Csaba Palotai, Ramanakumar Sankar, Dwayne L. Free, J. Andreas Howell, Elena Botella and Daniel Batcheldor. (25 May 2019).
- Identifying Interstellar Objects Trapped in the Solar System through Their Orbital Parameters, by Amir Siraj and Abraham Loeb. (5 May 2019).
- Meteor Shower Modeling: Past and Future Draconid Outbursts, by A. Egal, P. Wiegert, P. G. Brown, D. E. Moser, M. Campbell-Brown, A. Moorhead, S. Ehlert and N. Moticska. (1 May 2019).
- Meteoroid structure and fragmentation, by M. D. Campbell-Brown. (24 March 2019).
- Solar cycle variation in radar meteor rates, by M. D. Campbell-Brown. (26 February 2019).
- A New Meteoroid Model, by Valeri V. Dikarev, Eberhard Grün, William J. Baggaley, David P. Galligan, Markus Landgraf, Rüdiger Jehn. (12 February 2019).
- Lunar impacts, by Costantino Sigismondi. (12 February 2019).
- Lunar impact flashes, by C. Avdellidou and J. Vaubaillon. (10 February 2019).
- The Geminid parent body: (3200) Phaethon, by Patrick A. Taylor, Edgard G. Rivera-Valentín, Lance A.M. Benner, Sean E. Marshall, Anne K. Virkki, Flaviane C.F. Venditti, Luisa F. Zambrano-Marin, Sriram S. Bhiravarasu, Betzaida Aponte-Hernandez, Carolina Rodriguez Sanchez-Vahamonde and Jon D. Giorgini. (10 February 2019).
- Sun approaching asteroids and meteor streams, by Quanzhi Ye and Mikael Granvik. (10 February 2019).
- Waiting to make an impact: A probable excess of near-Earth asteroids in 2018 LA-like orbits, by C. de la Fuente Marcos and R. de la Fuente Marcos. (18 December 2018).
- What mechanisms dominate the activity of Geminid Parent (3200) Phaethon?, by LiangLiang Yu, Wing-Huen Ip and Tilman Spohn. (6 November 2018).
- The Draconid meteoroid stream 2018: prospects for satellite impact detection, by Auriane Egal, Paul Wiegert, Peter G. Brown, Danielle E. Moser, Althea V. Moorhead and William J. Cooke (21 September 2018).
- Modeling the measurement accuracy of pre-atmosphere velocities of meteoroids, by Denis Vida, Peter G. Brown and Margaret Campbell-Brown (15 July 2018).
- The Mayas and Eta Aquariids in AD 250-909, by J.H. Kinsman and D.J. Asher (31 July 2017).