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Model for motion of comet Encke during all its apparitions

Transactions of IAA RAS, issue 26, 99–109 (2012)

Keywords: comet motion, apparition, nongravitational effects, Marsden's model

Abstract

The shrinking of the ice fraction of comet nucleus is considered as the principal factor of the variation of nongravitational effects for 2P/Encke. Equations for determination of parameters of Marsden formula for nongravitational effects are developed. The least-square differential correction solution based on all available observations from 1786 to 2010 is obtained. A posteriori RMS residual is 32.7 times greater than RMS residual a priori, but this is the first solution consistent with observations in all apparitions of 2P/Encke. The error in the representation of time of perihelion passagein 1786 is 1.3 days versus 58 days in JPL theory. It may be concluded that present model is one and a half orders better than that of JPL, but one and a half orders worse than ideal theory

Citation

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RIS

V. Usanin. Model for motion of comet Encke during all its apparitions // Transactions of IAA RAS. — 2012. — Issue 26. — P. 99–109.

@article{usanin2012,
  abstract = {The shrinking of the ice fraction of comet nucleus is considered as the principal factor of the variation of nongravitational effects for 2P/Encke. Equations for determination of parameters of Marsden formula for nongravitational effects are developed. The least-square differential correction solution based on all available observations from 1786 to 2010 is obtained. A posteriori RMS residual is 32.7 times greater than RMS residual a priori, but this is the first solution consistent with observations in all apparitions of 2P/Encke. The error in the representation of time of perihelion passagein 1786 is 1.3 days versus 58 days in JPL theory. It may be concluded that present model is one and a half orders better than that of JPL, but one and a half orders worse than ideal theory},
  author = {V. Usanin},
  issue = {26},
  journal = {Transactions of IAA RAS},
  keyword = {comet motion, apparition, nongravitational effects, Marsden's model},
  pages = {99--109},
  title = {Model for motion of comet Encke during all its apparitions},
  url = {http://iaaras.ru/en/library/paper/902/},
  year = {2012}
}

TY  - JOUR
TI  - Model for motion of comet Encke during all its apparitions
AU  - Usanin, V.
PY  - 2012
T2  - Transactions of IAA RAS
IS  - 26
SP  - 99
AB  - The shrinking of the ice fraction of comet nucleus is considered as
the principal factor of the variation of nongravitational effects for
2P/Encke. Equations for determination of parameters of Marsden
formula for nongravitational effects are developed. The least-square
differential correction solution based on all available observations
from 1786 to 2010 is obtained. A posteriori RMS residual is 32.7
times greater than RMS residual a priori, but this is the first
solution consistent with observations in all apparitions of 2P/Encke.
The error in the representation of time of perihelion passagein 1786
is 1.3 days versus 58 days in JPL theory. It may be concluded that
present model is one and a half orders better than that of JPL, but
one and a half orders worse than ideal theory
UR  - http://iaaras.ru/en/library/paper/902/
ER  -