Abstract
Near real time astrometric and photometric observations of the asteroid 2008 TC3, discovered 19 hours before it fell to Earth in the area of northern Sudan, were conducted on the night of October 6–7, 2008, using an automated telescope ZA-320M of the Pulkovo Observatory. In the interval of 4 h, 270 observations in the integral band of the telescope were performed, which was about one-third of all global observations of the asteroid. Based on the analysis of all cases, physical parameters of the asteroid were assessed. The estimates of the absolute magnitude of the asteroid (M V = 30.6 ± 0.4 μm), its size (4.8 ± 0.8 m), and weight (131 ± 5 t) were obtained. A frequency analysis of the observational series was conducted, which helped to detect the periodicity in the brightness variation of the asteroid. The elements of the heliocentric orbit of the asteroid were refined. The trajectory of the asteroid, taking into account the atmospheric drag and nonsphericity of the Earth, was simulated.
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References
Beletskii, V.V., Dvizhenie iskusstvennogo sputnika otnositel’no tsentra mass (Motion of an Artificial Satellite with Respect to the Center of Mass), Moscow: Nauka, 1965.
Devyatkin, A.V., Kanaev, I.I., Kulish, A.P., et al., Automation of Astronomic Observations at ZA-320.II, Izv. GAO, 2004, no. 217, pp. 505–530.
Devyatkin, A.V, Kulish, A.P, Kouprianov, V.V, et al., in The Observations of Near Earth Objects by the Automatic Mirror Astrograph ZA-320M at Pulkovo Observatory, in Proc. IAU Symp. 236, Near Earth Objects, our Celestial Neighbours: Opportunity and Risk, Valsecchi, G.B. and Vokrouhlicky, D., Eds., Cambridge: Univ. Press, 2007, pp. 391–398.
Devyatkin, A.V., Aleshkina, E.Yu., and Kouprianov, V.V., Minor Planet Observations (084 Pulkovo), Minor Planet Circ., 2009, no. 65326.
Devyatkin, A.V., Gorshanov, D.L., Kouprianov, V.V., et al., Astrometric and Photometric Observations of Solar System Bodies by Pulkovo Observatory’s Automatic Mirror Astrograph ZA-320M, Sol. Syst. Res., 2009, vol. 43, no. 3, pp. 229–239.
Devyatkin, A.V., Gorshanov, D.L., Kouprianov, V.V., et al., Apex I and Apex II Software Packages for the Reduction of Astronomical CCD Observations, Sol. Syst. Res., 2010, vol. 44, no. 1, pp. 68–80.
Jenniskens, P., Shaddad, M.H., Numan, D., Elsir, S., et al., The Impact and Recovery of Asteroid 2008 TC3, Nature, 2009, vol. 458, pp. 485–488.
Kwok, R., The Rock That Fell to Earth, Nature, 2009, vol. 458, pp. 401–403.
Lagerkvist, C.-I. and Williams, I.P., Physical Studies of Asteroids. XV. Determination of Slope Parameters and Absolute Magnitudes for 51 Asteroids, Astron. Astrophys., 1987, vol. 68, pp. 295–315.
L’vov V.N. and Tsekmeister, S.D., EPOS is an Effective Research Instrument for Ephemeris Support of Observing the Solar System Objects, Available from: http://neopage.pochta.ru/RUS/ESUPP/main.htm
McGaha, J.E., Jacques, C., Pimentel, E., et al., 2008 TC3, Minor Planet Electron. Circ., 2008, no. 2008-T50.
Scargle, J.D., Studies in Astronomical Time Series Analysis. II. Statistical Aspects of Spectral Analysis of Unevenly Spaced Data, Astrophys. J., 1982, vol. 263, pp. 835–853.
Spravochnoe rukovodstvo po nebesnoi mekhanike i astrodinamike (Handbook on Celestial Mechanics and Astrodynamics), Duboshin, G.N., Ed., Moscow: Nauka, 1971.
Vinogradova, T.A., Zheleznov, N.B., Kuznetsov, V.B., et al., Catalog of the Potentially Dangerous Asteroids and Comets, in Trudy IPA RAN (Works of Institute of Applied Astronomy of Russian Academy of Sciences), St. Petersburg, 2003, issue 9, pp. 7–218.
Vityazev, V.V., Analiz neravnomernykh vremennykh ryadov (Analysis of Irregular Time Series), St. Petersburg: Izd. SPb univ., 2001a.
Vityazev, V.V., Veivlet-analiz vremennykh ryadov (Wavelet Analysis of the Time Series), St. Petersburg: Izd. SPb. univ., 2001b.
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Original Russian Text © E.Y. Aleshkina, V.V. Kupriyanov, A.V. Devyatkin, I.A. Vereshchagina, V.Yu. Slesarenko, V.N. L’vov, S.D. Tsekmeyster, 2011, published in Astronomicheskii Vestnik, 2011, Vol. 45, No. 1, pp. 36–44.
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Aleshkina, E.Y., Kupriyanov, V.V., Devyatkin, A.V. et al. Astrometric and photometric studies of the asteroid 2008 TC3. Sol Syst Res 45, 34–42 (2011). https://doi.org/10.1134/S0038094611010011
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DOI: https://doi.org/10.1134/S0038094611010011