Mass and orbit estimation of Planet X via a family of comets

Details Mass and orbit estimation of Planet X via a family of comets Mass and orbit estimation of Planet X via a family of comets

Sep 1991

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1991em%26p...54..193n&link_type=abstract

Earth, Moon, and Planets (ISSN 0167-9295), vol. 54, Sept. 1991, p. 193-202.

Physics

1

Comets, Planetary Mass, Planets, Solar Orbits, Aphelions, Brightness, Orbit Calculation, Orbit Perturbation, Orbital Elements, Orbital Position Estimation

Scientific paper

Characteristics of Planet X are developed by examining the aphelion distances and orbital parameters of comets that are assumed to be influenced by the unobserved planet. Planet X's semimajor axis and orbital eccentricity are found by, respectively, averaging the aphelion distances and studying the orbits of certain transplutonic comets. The orbital inclination is also estimated based on the assumed role of Planet X in directing quasi-periodic comet showers toward the inner solar system. The mass of the planet is calculated by extrapolating the density distribution of the primordial solar nebula. A list of assumptions including the cause of planetary perturbations is used to describe the actual location of Planet X including declination and ecliptic longitude as well as the apparent brightness.

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