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.
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).