Explanation of quantities on asteroids with satellites pages (original) (raw)

### Explanation of quantities on asteroids with satellites pages

(under construction)
compiled by Wm. Robert Johnston
last updated 20 September 2014

• dynamical type, primary
• orbital data, primary
  • Earth MOID=minimum orbital intersection distance
  • Tisserand invariant is given with respect to Jupiter and, for TNOs, with respect to Neptune
• orbital data, additional components
  • binary dynamical types are based on taxonomy described by Pravec and Harris (2007) and by Lindsay et al. (2014); more discussion is available here. In summary, type codes are:
    * A = small binary (D1<20 km) with smaller secondary (D2/D1<0.5)
    * B = small binary (D1<20 km) with similar sized secondary (D2/D1>0.8)
    * C = contact binary
    * L = large asteroid (D1>90 km) with small satellite (D2/D1<0.25)
    * O = outlier, particularly large asteroid (D1>90 km) with similar sized secondary (D2/D1>0.8)
    * U = unclassified
    * W = wide small binary (D1<10 km, A2/D1>10)
• **other data, system (combined)**--measurements where components are not separated, representing system totals or averages
  • absolute magnitude is from MPC data sets and, if available, from other sources
  • as available, taxonomic types are given for SMASSII (Bus and Binzel, 2002) and Tholen (Tholen, 1989) systems and the G-mode system for TNOs (Fulchignoni et al., 2008)
• other data, primary
• other data, additional components

Reference codes are given in brackets with full references here. The following are special codes:

• [*A]: Assumed or adopted values (used to obtain estimates for other values)
• [*D]: Derived values (based on other measured values)
• [*E]: Estimated values (based on assumed values)

References:

• Bus, S. J., and R. P. Binzel, 2002, Phase II of the Small Main-belt Asteroid Spectroscopy Survey: A feature-based taxonomy, Icarus, 158:146-177.
• Fulchignoni, M., I. Belskaya, M. A. Barucci, M. C. De Sanctis, and A. Doressoundiram, 2008, Transneptunian object taxonomy, in The Solar System Beyond Neptune, M. A. Barucci, H. Boehnhardt, D. P. Cruikshank, and A. Morbidelli (eds.), Univ. of Arizona Press, Tucson, 181-192.
• Lindsay, S. S., F. Marchis, J. P. Emery, J. E. Enriquez, and M. Assafin, 2014, Composition, mineralogy, and porosity of multiple asteroid systems from visible and near-infrared spectral data, ArXiv, 1409.0359.
• Pravec, P., and A. W. Harris, 2007, Binary asteroid population I. Angular momentum content, Icarus, 190:250-259.
• Tholen, D. J., 1989, Asteroid taxonomic classifications, in Asteroids II, R. P. Binzel, T. Gehrels, and M. S. Matthews (eds.), Univ. of Tucson Press (Tucson, AZ), 1139-1150.

© 2014 by Wm. Robert Johnston.
Last modified 20 September 2014.
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