On the possibility of a major impact on Uranus in the past century

Details On the possibility of a major impact on Uranus in the past century On the possibility of a major impact on Uranus in the past century

Aug 1993

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1993a%26a...275..630t&link_type=abstract

Astronomy and Astrophysics, Vol. 275, p. 630 (1993)

Astronomy and Astrophysics

Astrophysics

Planets And Satellites: Uranus, Interplanetary Medium, Celestial Mechanics, Stellar Dynamics

Scientific paper

It has been suggested recently by Brunini (1992b) that the systematic residuals in the computed orbit of Uranus may be explained by the influence of a major impact 100 years ago, rather than by the perturbing effects of a tenth planet. According to Brunini, this impact would be energetic enough to alter the orbit of Uranus, yet weak enough to have not caused a change in the planet's surface appearance. We demonstrate, however, that Brunini under-estimated the energetics of such an encounter by twelve orders of magnitude, and we discuss possible atmospheric and observational consequences.

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