Masses of asteroids and total mass of the main asteroid belt

E. V. Pitjeva, N. P. Pitjev

Research output: Contribution to journalArticlepeer-review

3 Scopus citations

Abstract

An estimation of the mass of the main asteroid belt was made on the basis of the new version of EPM2014 ephemerides of the Institute of Applied Astronomy of Russian Academy of Sciences using about 800000 positional observations of planets and spacecraft. We obtained the individual estimations of masses of large asteroids from radar data, as well as estimates of the masses of asteroids by using known diameters and estimated average densities for the three taxonomic types (C, S, M), and used the known mass values of binary asteroids and asteroids to which spacecraft approached. A two-dimensional homogeneous annulus with dimensions corresponding observed width of the main asteroid belt (2.06 au and 3.27 au) was used instead of a previous massive one-dimensional ring for modeling total perturbations from small asteroids. The obtained value of the total mass of the main asteroid belt is (12.25 ± 0.19)10-10 M.

Original languageEnglish
Pages (from-to)212-217
Number of pages6
JournalProceedings of the International Astronomical Union
Volume10
DOIs
StatePublished - 2016

Scopus subject areas

  • Medicine (miscellaneous)
  • Astronomy and Astrophysics
  • Nutrition and Dietetics
  • Public Health, Environmental and Occupational Health
  • Space and Planetary Science

Keywords

  • asteroids
  • data analysis
  • ephemerides
  • methods: analytical
  • minor planets
  • numerical

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