Abstract
The results of photometric observations of (87) Sylvia, 2006 VV2, (90) Antiopa, and (39) Laetitia asteroids in 2006–2008 are presented. The specific features of light curves are considered for each object. In particular, for asteroid (87) Sylvia, possible mutual phenomena in this triple system are identified. Asteroid 2006 VV2 manifests a strong dependence of the light curve on the filter color, which testifies to the presence of inhomogeneities on its surface. The previously unknown brightness variation period with a duration of about three days was obtained for this asteroid. For binary asteroid (90) Antiopa, the strong dependence of its brightness on the phase angle was noticed; this may testify to the very flattened shape of its components. Considerable time variations of the shape of the light curve for asteroid (39) Laetitia may testify either to its complex shape or to its binary character.
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References
Alen, K. U., Astrophysical Quantities (Mir, Moscow, 1977) [in Russian].
Vereshchagina, I. A. and Shor, V. A., “Dynamics of Binary System of Asteroid 1220 Crocus”, Izv. CAO, 2006, no. 218, pp. 61–67.
Vinogradova, T. A., Zheleznov, N. B., Kuznetsov, V. B., et al., “Catalogue of Potentially Hazardous Asteroids and Comets”, Trudy IAA RAS, Efemeridn. Astron., 2009, issue 9.
Vityazev, V. V., Wavelet Analysis of Time Series (Izd. St. Petersburg Uni., St. Petersburg, 2001) [in Russian].
Vityazev, V. V., Analysis of Inhomogeneous Time Series (Izd. St. Petersburg Uni., St. Petersburg, 2001b) [in Russian].
Devyatkin, A. V., Kanaev, I. I., Kulish, A. P., et al., “Automation of Astronomical Observations at ZA-320M”, Izv. CAO, 2004, no. 217, pp. 505–530.
Devyatkin, A. V., Kulish, A. P., Shumakher, A. V., et al., “Optical Position Angle Sensor of Automated Telescope ZA-320M (Pulkovo Observatory) Optich. Zh., 2008, vol. 75, no. 1, pp. 73–79.
Devyatkin, A. V., Gorshanov, D. L., Kupriyanov, V. V., et al., “Astrometric and Photometric Observations of Bodies of Solar System at Automated Mirror Astrograph ZA-320M (Pulkovo Observatory)”, Astron. Vestn., 2009, vol 43(3), pp. 1–11.
Kamus, S. V., Tergoev, V. I., and Denisenko, S. A., “Wide-Angle Astronomical Telescope”, Optich. Zh., 2002, vol. 69, no. 9, pp. 84–87.
Kanaev, I. I., Devyatkin, A. V., Kulish, A. P., et al., “Automation of Astronoical Observations at ZA-320M”, Izv. CAO, 2002, no. 216, pp. 128–156.
Prokof’eva, V. V., Demchik, M. I., “Frequency Analysis of Simultaneous BVR Observations of Asteroid 87 Sylvia and its Binary Character”, Pisma Astron. Zh., 1994, vol. 20, no. 4, pp. 299–316.
Binzel, R., “Is 1220 Crocus a Precessing Binary Asteroid?” Icarus, 1985, vol. 63, pp. 99–108.
Cellino, A., Pannunzio, R., Zappala, V., et al., “Do We Observe Light Curves of Binary Asteroids?”, Astron. Astrophys., 1985, vol. 144, no. 2, pp. 355–362.
Descamps, P., Marchis, F., Michalowski, T., et al., “Figure of the Double Asteroid 90 Antiope from Adaptive Optics and Lightcurve Observations”, Icarus, 2007, vol. 187, no. 2, pp. 482–499.
Descamps, P., Marchis, F., Pollock, J., et al., New Determination of the Size and Bulk Density of the Binary Asteroid 22 Kalliope from Observations of Mutual Eclipses”, Icarus, 2008, vol. 196, no. 2, pp. 578–600.
Devyatkin, A.V., Gorshanov, D.L., Gritsuk, A.N., et al., “Observations and Theoretical Analysis of Lightcurves of Natural Satellites of Planets”, Solar Syst. Res, 2002, vol. 36, no. 3, pp. 248–259.
Devyatkin, A.V and Kulish, A.P, in Proceedings of IAU Symposium 236 Near Earth Objects, our Celestial Neighbors: Opportunity and Risk., ed. by Valsecchi, G. B., Vorkouhlicky, D. (Cambridge Univ. Press, Cambridge, 2007).
Devyatkin, A. V., Gorshanov, D. L., and Aleshkina, E. Yu., “Photometric Observations of Solar System Bodies with ZA-320M Automatic Mirror Astrograph in Pulkovo Observatory”, Planet. Space Sci., 2008, vol. 56, no. 14, pp. 1888–1892.
Helin, E. F., Pravdo, S., Lawrence, K., et al., “2006 VV2”, Minor Planet Electronic Circ., 2006, pp. 2006-W87.
Kaasalainen, M., Lamberg, L., and Lumme, K., “Interpretation of Lightcurves of Atmosphereless Bodies”, Astron. Astrophys., 1992, vol. 259, pp. 333–340.
Marchis, F., Descamps, P., Hestroffer, D., Berthier, J. “Discovery of the Triple Asteroidal System 87 Sylvia”, Nature, 2005, vol. 436, pp. 822–824.
Merline, W. J., Close, L. M., Dumas, C., et al., “Discovery of Companions To Asteroids 762 Pulcova and 90 Antiope by Direct Imaging”, Bull. Am. Astron. Soc., 2000, vol. 32, p. 1017.
Michalowski, T., Colas, F., Kwiatkowski, T., et al., “Eclipsing Events in the Binary System of the Asteroid 90 Antiope”, Astron. Astrophys., 2002, vol. 396, pp. 293–299.
Prokof’eva, V. V. and Karachkina, L. G., “Satellites of Two Large Asteroids”, Trans, 1998, vol. 15, pp. 219–224.
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.
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Original Russian Text © I.A. Vereshchagina, D.L. Gorshanov, A.V. Devyatkin, P.G. Papushev, 2009, published in Astronomicheskii Vestnik, 2009, Vol. 43, No. 4, pp. 305–314.
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Vereshchagina, I.A., Gorshanov, D.L., Devyatkin, A.V. et al. Some specific features of light curves of (39) Laetitia, (87) Sylvia, (90) Antiopa, and 2006 VV2 asteroids. Sol Syst Res 43, 291–300 (2009). https://doi.org/10.1134/S0038094609040030
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DOI: https://doi.org/10.1134/S0038094609040030