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Title:
Mass and orbit estimation of Planet X via a family of comets
Authors:
Neuhaeuser, R.; Feitzinger, J. V.
Affiliation:
AA(Bochum, Ruhr-Universitaet, Federal Republic of Germany), AB(Bochum, Ruhr-Universitaet; Sternwarte, Federal Republic of Germany)
Publication:
Earth, Moon, and Planets (ISSN 0167-9295), vol. 54, Sept. 1991, p. 193-202. (EM&P Homepage)
Publication Date:
09/1991
Category:
Astronomy
Origin:
STI
NASA/STI Keywords:
COMETS, PLANETARY MASS, PLANETS, SOLAR ORBITS, APHELIONS, BRIGHTNESS, ORBIT CALCULATION, ORBIT PERTURBATION, ORBITAL ELEMENTS, ORBITAL POSITION ESTIMATION
DOI:
10.1007/BF00056320
Bibliographic Code:
1991EM&P...54..193N

Abstract

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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