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The 2004 Las Campanas/Lowell Observatory campaign II. Surface properties of Hayabusa target Asteroid 25143 Itokawa inferred from Hapke modeling

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We present an analysis of Hapke photometric modeling applied to uniform ground-based UBVRIJHK broadband data of asteroid 25143 Itokawa collected over a wide range of solar phase angles (4°–130°) during the 2004 apparition (Thomas-Osip et al., this issue, hereafter Paper I). Our photometric analyses indicate that Itokawa has a blocky surface with properties different from other, albeit larger, S-class asteroids studied using similar Hapke modeling analyses. Images from the Hayabusa spacecraft affirm the Hapke modeling results, demonstrating the ability of Hapke photometric modeling to predict a rocky asteroid surface correctly; this is the first time that a predicted rocky surface has been observed by a spacecraft. The single particle scattering functions are dominantly forward scattering, suggesting the surface material is composed primarily of clear particles whose scattering is dictated by the particle’s surface as opposed to internal scatterers (more typical of S-class asteroids), while the opposition parameters indicate that the regolith may be more compact than most of the limited number of asteroids visited by spacecraft to date. The roughness properties, single particle scattering properties, and opposition surge characteristics are all indicative of a surface where multiple scattering does not play a major role in defining the photometric properties of the regolith.


  1. Abell, P. A., F. Vilas, K. S. Jarvis, M. J. Gaffey, and M. S. Kelley, Mineralogical Composition of (25143) Itokawa 1998 SF36 from visible and Near-Infrared Reflectance Spectroscopy: Evidence for Partial Melting, Meteoritics Planet. Sci., (in press).

  2. Binzel, R. P., A. S. Rivkin, S. J. Bus, J. M. Sunshine, and T. H. Burbine, MUSES-C target asteroid (25143) Itokawa: A reddened ordinary chondrite, Meteoritics Planet. Sci., 36, 1167–1172, 2001.

  3. Chapman, C. R., S-Type Asteroids, Ordinary Chondrites, and Space Weathering: The Evidence from Galileo’s Fly-bys of Gaspra and Ida, Meteoritics Planet. Sci., 31, 699–725, 1996.

  4. Cheng, A. F. and D. L. Domingue, Radiative transfer models for light scattering from planetary surfaces, J. Geophys. Res., 105, 9477–9482, 2000.

  5. Clark, B. E., P. Lucey, P. Helfenstein, J. F. Bell III, C. Peterson, J. Veverka, T. McConnochie, M. S. Robinson, B. Bussey, S. L. Murchie, N. I. Izenberg, and C. R. Chapman, Space weathering on Eros: Constraints from albedo and spectral measurements of Psyche crater, Meteoritics Planet. Sci., 36, 1617–1637, 2001.

  6. Clark, B. E., B. Hapke, C. Pieters, and D. Britt, Asteroid SpaceWeathering and Regolith Evolution, in Asteroids III, edited by B. Bottke et al., 585–599, Univ. of Arizona Press, Tucson, 2002a.

  7. Clark, B. E., P. Helfenstein, J. F. Bell, C. Peterson, J. Veverka, N. I. Izenberg, D. Domingue, D. Wellnitz, and L. McFadden, NEAR Infrared Spectrometer Photometry of Asteroid 433 Eros, Icarus, 155, 189–204, 2002b.

  8. Domingue, D. L., M. Robinson, B. Carcich, J. Josesph, P. Thomas, and B. E. Clark, Disk integrated photometry of 433 Eros, Icarus, 155, 205–219, 2002.

  9. Fujiwara, A., J. Kawaguchi, D. K. Yeomans, M. Abe, T. Mukai, T. Okada, J. Saito, H. Yano, M. Yoshikawa, D. J. Scheeres, O. Barnouin-Jha, A. F. Cheng, H. Demura, R.W. Gaskell, N. Hirata, H. Ikeda, T. Kominato, H. Miyamoto, A. M. Nakamura, R. Nakamura, S. Sasaki, and K. Uesugi, The Rubble-Pile Asteroid Itokawa as Observed by Hayabusa, Science, 312, 1330–1334, 2006.

  10. Hapke, B., Bidirectional reflectance spectroscopy. I. Theory., J. Geophys. Res., 86, 3039–3054, 1981.

  11. Hapke, B., Bidirectional reflectance spectroscopy. III. Correction for macroscopic roughness, Icarus, 59, 41–59, 1984.

  12. Hapke, B., Bidirectional reflectance spectroscopy. IV. The extinction coefficient and the opposition effect, Icarus, 67, 264–280, 1986.

  13. Hapke, B., Bidirectional reflectance spectroscopy. 5. The coherent backscatter opposition effect and anisotropic scattering, Icarus, 157, 523–534, 2002.

  14. Hapke, B., R. Nelson, and W. Smythe, The Opposition Effect of the Moon: Coherent Backscatter and Shadow Hiding, Icarus, 133, 89–97, 1998.

  15. Harris, A. W., J. W. Young, L. Contreiras, T. Dockweiler, L. Belkora, H. Salo, W. D. Harris, E. Bowell, M. Poutanen, R. P. Binzel, D. J. Tholen, and S. Wang, Phase relations of high albedo asteroids—The unusual opposition brightening of 44 NYSA and 64 Angelina, Icarus, 81, 365–374, 1989.

  16. Hartman, B. and D. Domingue, Scattering of light by individual particles and the implications for models of planetary surfaces, Icarus, 131, 421–448, 1998.

  17. Helfenstein, P. and J. Veverka, Photometric properties of lunar terrains derived from Hapke’s equation, Icarus, 72, 342–357, 1987.

  18. Helfenstein, P. and J. Veverka, Physical characterization of asteroid surfaces from photometric analysis, in Asteroids II, edited by R. P. Binzel, T. Gehrels, M. S. Matthews, 557–593, Univ. of Arizona Press, Tucson, 1989.

  19. Helfenstein, P., J. Veverka, P. C. Thomas, D. P. Simonelli, P. Lee, K. Klaasen, T. V. Johnson, H. Breneman, J. W. Head, and S. Murchie, Galileo photometry of Asteroid 951 Gaspra, Icarus, 107, 37, 1994.

  20. Helfenstein, P., J. Veverka, P. C. Thomas, D. P. Simonelli, K. Klaasen, T. V. Johnson, F. Fanale, J. Granahan, A. S. McEwen, M. Belton, and C. Chapman, Galileo photometry of Asteroid 243 Ida, Icarus, 120, 48–65, 1996.

  21. Kaasalainen, M., T. Kwiatkowski, M. Abe, J. Piironen, T. Nakamura, Y. Ohba, B. Dermawan, T. Farnham, F. Colas, S. Lowry, P. Weissman, R. J. Whitely, D. J. Tholen, S. M. Larson, M. Yoshikawa, I. Toth, and F. P. Velichko, CCD photometry and model of MUSES-C target 25143 Itokawa, Astron. Astrophys., 405, L29–L32, 2003.

  22. Lederer, S. M., D. L. Domingue, F. Vilas, M. Abe, T. L. Farnham, K. S. Jarvis, S. C. Lowry, Y. Ohba, P. R. Weissman, L. M. French, H. Fukai, S. Hasegawa, M. Ishiguro, S. M. Larson, and Y. Takagi, Physical characteristics of Hayabusa target Asteroid 25143 Itokawa, Icarus, 173, 153–165, 2005.

  23. McFadden, L. A., M. J. Gaffey, and T. B. McCord, Mineralogicalpetrological characterization of near-earth asteroids, Icarus, 59, 25–40, 1984.

  24. McGuire, A. F. and B.W. Hapke, An experimental study of light scattering by large irregular particles, Icarus, 113, 134, 1995.

  25. Müller, T. G., T. Sekiguchi, M. Kaasalainen, M. Abe, and S. Hasegawa, Thermal infrared observations of the Hayabusa spacecraft target asteroid 25143 Itokawa, Astron. Astrophys., 443, 347–355, 2005.

  26. Pieters, C. M., L. A. Taylor, S. K. Noble, L. P. Keller, B. Hapke, R. V. Morris, C. C. Allen, D. S. McKay, and S. Wentworth, Space weathering on airless bodies: Resolving a mystery with lunar samples, Meteorit. Planet. Sci., 35, 1101, 2000.

  27. Rabinowitz, D. L., Size and orbit dependent trends in the reflectance colors of Earth-approaching asteroids, Icarus, 134, 342–346, 1998.

  28. Saito, J., H. Miyamoto, R. Nakamura, M. Ishiguro, T. Michikami, A. M. Nakamura, H. Demura, S. Sasaki, N. Hirata, C. Honda, A. Yamamoto, Y. Yokota, T. Fuse, F. Yoshida, D. J. Tholen, R. W. Gaskell, T. Hashimoto, T. Kubota, Y. Higuchi, T. Nakamura, P. Smith, K. Hiraoka, T. Honda, S. Kobayashi, M. Furuya, N. Matsumoto, E. Nemoto, A. Yukishita, K. Kitazato, B. Dermawan, A. Sogame, J. Terazono, C. Shinohara, and H. Akiyama, Detailed Images of Asteroid 25143 Itokawa from Hayabusa, Science, 312, 1341–1344, 2006.

  29. Sasaki, S., T. Nimura, T. Hiroi, M. Ishiguro, N. Hirata, M. Abe, Y. Ueda, A. Yamamoto, and B. E. Clark, SpaceWeathering of Rock SurfaceWithout Regolith: Laboratory Simulation of Spectral Change, LPSCXXXVII, abstract 1705, 2006.

  30. Shkuratov, Yu. G., D. G. Stankevich, D. V. Petrov, P. C. Pinet, Au. M. Cord, and Y. H. Daydou, Interpreting photometry of regolith-like surfaces with different topographies: shadowing and multiple scatter, Icarus, 173, 3–15, 2005.

  31. Thomas-Osip, J. E., S. M. Lederer, D. J. Osip, F. Vilas, D. Domingue, K. Jarvis, and S. L. Leeds, The 2004 Las Campanas/Lowell Observatory Itokawa campaign: I. Simultaneous visible and near-infrared photometry of the Hayabusa mission target, Earth Planets Space, 60, this issue, 39–48, 2008.

  32. Verbiscer, A. J. and J. Veverka, Interpretation of the IAU two-parameter magnitude system for asteroids in terms of Hapke photometric theory, Icarus, 115, 369–373, 1995.

  33. Whiteley, R. J., A compositional and dynamical survey of the near Earth asteroids, Ph.D. thesis, Univ. Hawaii, 2001.

  34. Yano, H., T. Kubota, H. Miyamoto, T. Okada, D. Scheeres, Y. Takagi, K. Yoshida, M. Abe, S. Abe, O. Barnouin-Jha, A. Fujiwara, S. Hasegawa, T. Hashimoto, M. Ishiguro, M. Kato, J. Kawaguchi, T. Mukai, J. Saito, S. Sasaki, and M. Yoshikawa, Science, 312, 1350–1353, 2006.

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Correspondence to S. M. Lederer.

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Lederer, S.M., Domingue, D.L., Thomas-Osip, J.E. et al. The 2004 Las Campanas/Lowell Observatory campaign II. Surface properties of Hayabusa target Asteroid 25143 Itokawa inferred from Hapke modeling. Earth Planet Sp 60, 49–59 (2008) doi:10.1186/BF03352761

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Key words

  • Surfaces
  • asteroids
  • photometry
  • regoliths
  • composition