Abstract
In recent years, following the Chelyabinsk event of February 15, 2013, the lower size limit for presumably dangerous near-Earth objects has been decreased manyfold (essentially, from 140 m to ~10 m). This has drawn an increased attention to the properties of the population of decameter-sized bodies, in particular, the bodies that approach the Earth from the sunward side (daytime sky). The current paper is concerned with various properties of this population. The properties of the ensemble are analyzed using both observational data from other authors and theoretical estimates obtained by cloning virtual bodies. This question is of great practical importance, as the means for detecting such bodies (for example, the SODA project) need to be developed with consideration for the requirements imposed by the population properties. We have shown that the average rate of entering near-Earth space (NES), i.e., at distances less than ~1 million km from the Earth, for decameter-sized and larger bodies from the daytime sky (elongation values of entry points less than 90°) is approximately 620 objects per year for elongation angles of the detection point <90° and approximately 220 objects per year for elongation angles of the detection point <45°.
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References
Billings, L., Newly released map data shows frequency of small asteroid impacts, provides clues on larger asteroid population, 2014. http://neo.jpl.nasa.gov/news/ news186.html.
Bodin, B.V., Emel’yanov, V.A., Levitskii, Yu.E., Luk’yashchenko, V.I., Cheryapkin, I.Ya., and Utkin, V.F., Space remote control and early warning systems of previously unknown dangerous asteroids large 50 m, Izv. Chelyab. Nauch. Tsentra, 1997, special issue, pp. 8–17.
Brown, P.G., Assink, J.D., Astiz, L., Blaauw, R., Boslough, M.B., Borovicka, J., Brachet, N., Brown, D., Campbell-Brown, M., Ceranna, L., Cooke, W., de Groot-Hedlin, C., Drob, D.P., Edwards, W., Evers, L.G., et al., A 500-kiloton airburst over Chelyabinsk and an enhanced hazard from small impactors, Nature, 2013, vol. 503, pp. 238–241.
Emel’yanenko, V.V. and Naroenkov, S.A., Dynamical features of hazardous near-Earth objects, Astrophys. Bull., 2015, vol. 70, no. 3, pp. 342–348.
Emel’yanenko, V.V., Naroenkov, S.A., and Shustov, B.M., Distribution of the near-earth objects, Sol. Syst. Res., 2011, vol. 45, no. 6, pp. 498–503.
Emel’yanenko, V.V., Popova, O.P., Chugai, N.N., Shelyakov, M.A., Pakhomov, Yu.V., Shustov, B.M., Shuvalov, V.V., Biryukov, E.E., Rybnov, Yu.S., Marov, M.Ya., Rykhlova, L.V., Naroenkov, S.A., Kartashova, A.P., Kharlamov, V.A., and Trubetskaya, I.A., Astronomical and physical aspects of the Chelyabinsk event (February 15, 2013), Sol. Syst. Res., 2013, vol. 47, no. 4, pp. 240–254.
Hahn, G., Granvik, M., Morbidelli, A., Michel, P., Jedicke, R., Bolin, B., Bottke, B., Nesvorny, D., Vokrouhlicky, D., and Beshore, E., Modeling the NEO population, in Technical Note, ESA/ESTEC Contract No. 4000106274, 2014.
Harris, A., The population of near-Earth asteroids, Icarus, 2015, vol. 257, pp. 302–312.
JPL’s Center for NEO Studies (CNEOS). http://neo.jpl.nasa.gov/fireballs/.
Laurin, D., Hildebrand, A., Cardinal, R., Harvey, W., and Tafazoli, S., NEOSsat: a Canadian small space telescope for near Earth asteroid detection, in Space Telescopes and Instrumentation 2008: Optical, Infrared, and Millimeter, Proc. SPIE, Oschmann, J.M., Graauw, M.W., and MacEwen, H.A., Eds., Bellingham, WA: Soc. Photo-Opt. Instrum. Eng., 2008, vol. 7010, pp. 701013–701013-12. Near-Earth Object Camera (NEOCam). http://neocam.ipac.caltech.edu/.
Popova, O., Jenniskens, P., Emel’yanenko, V., Kartashova, A., Biryukov, E., Khaibrakhmanov, S., Shuvalov, V., Rybnov, Yu., Dudorov, A., Grokhovsky, V.I., Badyukov, D.D., Qing-Zhu Yin, Gural, P.S., Albers, J., Granvik, M., et al., Chelyabinsk airburst and damage assessment, Science, 2013, vol. 342, pp. 1069–1073.
Shugarov, A.S., Shustov, B.M., Martynov, M.B., Kudryashov, V.A., and Terebizh, V.Yu., On the concept of a low-cost space system for detecting hazardous celestial bodies, Cosmic Res., 2015, vol. 53, no. 2, pp. 89–97.
Shustov, B.M., Naroenkov, S.A., Emel’yanenko, V.V., and Shugarov, A.S., Astronomical aspects of building a system for detecting and monitoring hazardous space objects, Sol. Syst. Res., 2013, vol. 47, no. 4, pp. 288–295.
Shustov, B.M., Shugarov, A.S., Naroenkov, S.A., and Prokhorov, M.E., Astronomical aspects of cosmic threats: new problems and approaches to asteroid—comet hazard following the Chelyabinsk event of February 15, 2013, Astron. Rep., 2015, vol. 59, no. 10, pp. 983–996.
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Original Russian Text © B.M. Shustov, S.A. Naroenkov, E.V. Efremova, 2017, published in Astronomicheskii Vestnik, 2017, Vol. 51, No. 1, pp. 44–50.
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Shustov, B.M., Naroenkov, S.A. & Efremova, E.V. On population of hazardous celestial bodies in the near-Earth space. Sol Syst Res 51, 38–43 (2017). https://doi.org/10.1134/S0038094617010038
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DOI: https://doi.org/10.1134/S0038094617010038