1620 Geographos



Contents

  1. Background
  2. Data
  3. Data Archives
  4. File Organization
  5. References
  6. Pictures
  7. Movies


    Background

    The 8th NEA to be observed using radar, 1620 Geographos was observed again in 1994. The asteroid was discovered on 1951 September 14 at Mt. Palomar and was originally given the provisional designation 1951 RA.


    figure 8.

    Geographos low-resolution radar movie. 150 single-run images from observations with the 1.0-microsecond X 2.86-Hz (150 x 151 m) setup are shown in chronological order from left to right in the top row, etc. Labels give rotation phase in degrees. Data file names are indicated in the margins. The radar is toward the top, time delay (range) increases toward the bottom, and Doppler frequency (radial velocity) increases toward the left. This is Fig. 8 from Ostro et al. (1996), Icarus 121, 46-66; copyright Academic Press.

    figure 10.

    Geographos high-resolution radar movie. 250 single-run images from observations with the 0.5-microsecond X 1.64-Hz (75 m x 87 m) setup are shown in chronological order from left to right in the top row, etc. Labels give rotation phase in degrees. Data file names are indicated in the margins. The radar is toward the top, time delay (range) increases toward the bottom, and Doppler frequency (radial velocity) increases toward the left. This is Fig. 10 from Ostro et al. (1996), Icarus 121, 46-66; copyright Academic Press.

    References

    Radar observations of asteroid 1620 Geographos.
    Ostro, S. J., R. F. Jurgens, K. D. Rosema, R. S. Hudson, J. D. Giorgini, R. Winkl er, D. K. Yeomans, D. Choate, R. Rose, M. A. Slade, S. D. Howard, D. J. Scheeres, and D. L. Mitchell. Icarus 121, 44-66 (1996).

    Photometric observations and modeling of asteroid 1620 Geographos.
    Magnusson, P., M. Dahlgren, M. A. Barucci, L. Jorda, R. P. Binzel, S. M. Slivan, C. Blanco, D. Ruccioli, B. J. Buratti, F. Colas, J. Berthier, G. de Angelis, M. Di Martino, E. Dotto, J. D. Drummond, U. Fink, M. Hicks, W. Grundy, W. Wisniewski, N. M. Gaftonyuk, E. H. Ge yer, T. Bauer, M. Hoffman, V. Ivanova, B. Komitov, Z. Donchev, P. Denchev, Yu. N. Krugly , F. P. Velichko, V. G. Chiorny, D. F. Lupishko, V. G. Shevchenko, T. Kwiatkowski, A. Kr yszczynska, J. F. Lahulla, J. Licandro, O. Mendez, S. Mottola, A. Erikson, S. J. Ostro, P. P ravec, W. Pych, D. J. Tholen, R. Whiteley, W. J. Wild, M. Wolf, and L. Sarounovà. Icarus 123, 2 27-244 (1996).

    Extreme elongation of asteroid 1620 Geographos from radar images.
    Ostro, S. J., K. D. Rosema, R. S. Hudson, R. F. Jurgens, J. D. Giorgini, R. Winkler, D. K. Yeomans, D. Choate, R. Rose, M. A. Slade, S. D. Howard, and D. L. Mitchell. Nature 375, 474-477 (1995).

    Rotationally resolved spectra of 1620 Geographos.
    Hicks, M., W. Grundy, U. Fink, S. Mottola, and G. Neukum. Icarus 113, 456-451 (1995).

    Minor planets and related objects. XV. Asteroid (1620) Geographos.
    Dunlap, J. L. Astron. J. 79, 324-332 (1974).

    Man on an asteroid.
    Staley, D. O. J. Geophys. Res. 75, 5571-5573 (1970).


    Radar-Detected Asteroids Asteroid Radar Astronomy