Orbital elements and other data (Assumed or derived values in parenthesis, my estimates in italics and parenthesis. Source identifications in brackets, see this link for sources):

--(1862) Apollo--discovery and notes:

Primary discovered on 24 April 1932 by K. Reinmuth at Heidelberg, Germany. Alternative designation 1932 HA.

Secondary identified based on radar observations on 29 October-2 November 2005 from Arecibo Observatory, Puerto Rico.

See more information and links at Asteroid/Comet Connection Catchall Catalog page

--Links, more technical:

• IAUC 8627
• IAUC 5921
• IAUC 3526
• 1862 Apollo planning

--Links, less technical:

--Links to ADS abstracts:

• Kaasalainen, Mikko, Ďurech, Josef, Warner, Brian D., Krugly, Yurij N., & Gaftonyuk, Ninel M. 2007, Nature Acceleration of the rotation of asteroid 1862 Apollo by radiation torques
• Muinonen, K., Torppa, J., Virtanen, J., Laakso, T., Niemelae, J., Naeraenen, J., Granvik, M., Parviainen, H., Aksnes, K., Dai, Z., Lagerkvist, C.-I., Rickman, H., Karlsson, O., Hahn, G., Michelsen, R., Grav, T., & Joergensen, U. 2006, IAU Symposium Physical and Dynamical Properties of Near-Earth Objects from Nordic NEON
• Warner, Brian D. 2006, Minor Planet Bulletin Analysis of 13 asteroid lightcurves obtained at the Palmer Divide Observatory
• Benner, L. A. M. 2006, Society for Astronomical Sciences Annual Symposium Arecibo and Goldstone Radar Imaging of Near-Earth and Main-Belt Asteroids in 2005
• Ostro, S. J., Benner, L. A. M., Giorgini, J. D., Nolan, M. C., Hine, A. A., Howell, E. S., Margot, J. L., Magri, C., & Shepard, M. K. 2005, International Astronomical Union Circular (1862) Apollo
• Pilcher, Frederick 2005, Minor Planet Bulletin Minor planets at unusually favorable elongations in 2005
• Ostro, Steven J., Rosema, Keith D., Campbell, Donald B., & Shapiro, Irwin I. 2002, Icarus NOTE: Radar Observations of Asteroid 1862 Apollo
• Magri, C., Ostro, S. J., Benner, L. A. M., & Beeney, B. R. 2000, Bulletin of the American Astronomical Society Radar Constraints on the Compositions of 45 Asteroids
• Binzel, R. P., Bus, S. J., & Burbine, T. H. 1997, Bulletin of the American Astronomical Society Compositional Distribution of Near-Earth Asteroids: New Results for 80 Objects
• Binzel, R. P., Bus, S. J., Burbine, T. H., & Sunshine, J. M. 1996, Bulletin of the American Astronomical Society A Spectroscopic Survey of Near-Earth Asteroids: Evidence for an S-asteroid Ordinary Chondrite Link
• Binzel, R. P. 1995, Meteoritics Forging New Links in the Asteroid-Meteorite Connection
• Sitarski, G. 1995, Acta Astronomica Determination of Masses of Mercury and Venus from Observations of Five Minor Planets
• Binzel, R. P. & Bus, S. J. 1994, International Astronomical Union Circular 1993 VW
• Yeomans, D. K. 1991, Astronomical Journal A comet among the near-earth asteroids?
• Harris, A. W., Young, J. W., Goguen, J., Hammel, H. B., Hahn, G., Tedesco, E. F., & Tholen, D. J. 1987, Icarus Photoelectric lightcurves of the asteroid 1862 Apollo
• Olsson-Steel, Duncan 1987, European Regional Astronomy Meeting of the IAU, Volume 2 Meteoroid streams associated with Apollo asteroids - Evidence from the Adelaide radar orbit surveys
• Tholen, D. J. 1984, Ph.D. Thesis Asteroid taxonomy from cluster analysis of Photometry
• McFadden, L. A., Gaffey, M. J., & McCord, T. B. 1983, Lunar and Planetary Institute Conference Abstracts Spectral Reflectance of Near-Earth Asteroids: Implications for Composition, Origin and Evolution
• Hahn, G. 1983, Asteroids, comets, meteors; Proceedings of the Meeting, Uppsala, Sweden, June 20-22, 1983 (A85-26851 11-89). Uppsala, Sweden, Astronomiska Observatoriet, 1983, p. 35-44. UBVRI and JHK photometry of the near-earth asteroid 1862 Apollo
• Lebofsky, L. A., Veeder, G. J., Rieke, G. H., Lebofsky, M. T., Matson, D. L., Kowal, C., Wynn-Williams, C. G., & Becklin, E. E. 1981, Icarus The albedo and diameter of 1862 Apollo
• Ostro, S. J. 1981, Cornell Univ. Final Report Radar investigation of asteroids
• Ostro, S. J. 1981, NASA STI/Recon Technical Report N Radar investigation of asteroids
• Klemola, A. R. 1981, Astronomical Journal Astrometric observations of planets, minor planets, and satellites - 1976-1980
• Marsden, B. G. 1980, International Astronomical Union Circular (1862) Apollo
• Whipple, Fred Lawrence, Cunningham, L. E., & Shapley, Harlow 1937, Annals of Harvard College Observatory A definitive orbit of Apollo (Reinmuth object, 1932 HA)
• Stracke, G. 1933, Astronomische Nachrichten Über die Bahn des Reinmuthschen Planeten 1932 HA
• Stracke, G. 1932, Astronomische Nachrichten Über die Bahn des Planeten 1932 HA
• 1932, Popular Astronomy The Reinmuth asteroid 1932 HA
• van Biesbroeck, G. 1932, Popular Astronomy Asteroids 1932 EA<SUB>1</SUB> (Delporte) and 1932 HA (Reinmuth)

© 2005, 2007 by Wm. Robert Johnston.
Last modified 19 May 2007.
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