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Appearance of the Comet Encke’s Outburst Activity in Its Positional Observations

Transactions of IAA RAS, issue 45, 124–134 (2018)

Keywords: comets, the comet Encke, positional observations, dust clouds, impulsive activity, photocenter.

Abstract

An attempt is made to investigate the features of the comet Encke’ coma on the basis of its optical observations. The orbit of the comet Encke is obtained on the interval from 1993 to 2014 which covers 7 apparitions of the comet and in cludes 3044 observations. The Marsden’s model has been used to account nongravitational effects. The analysis of residuals shows that the number of observations where the O–С values exceed the 3σ criterion grows substantially near the perihelion passings of all the considered apparitions. Abnormal observations are focused on about ±100-day intervals with respect to the perihelion passages. Our analysis of the O–С shows that it is possible to assume the existence of emissions in some cases. They are observed as false cometary nuclei and are showed up in the systematic deviations of the residuals.

Citation

Text

BibTeX

RIS

Yu. A. Chernetenko. Appearance of the Comet Encke’s Outburst Activity in Its Positional Observations // Transactions of IAA RAS. — 2018. — Issue 45. — P. 124–134.

@article{chernetenko2018,
  abstract = {An attempt is made to investigate the features of the comet Encke’ coma on the basis of its optical observations. The orbit of the comet Encke is obtained on the interval from 1993 to 2014 which covers 7 apparitions of the comet and in cludes 3044 observations. The Marsden’s model has been used to account nongravitational effects. The analysis of residuals shows that the number of observations where the O–С values exceed the 3σ criterion grows substantially near the perihelion passings of all the considered apparitions. Abnormal observations are focused on about ±100-day intervals with respect to the perihelion passages. Our analysis
of the O–С shows that it is possible to assume the existence of emissions in some cases. They are observed as false cometary nuclei and are showed up in the systematic deviations of the residuals.},
  author = {Yu.~A. Chernetenko},
  doi = {10.32876/ApplAstron.45.124-134},
  issue = {45},
  journal = {Transactions of IAA RAS},
  keyword = {comets, the comet Encke, positional observations, dust clouds, impulsive activity, photocenter},
  pages = {124--134},
  title = {Appearance of the Comet Encke’s Outburst Activity in Its Positional Observations},
  url = {http://iaaras.ru/en/library/paper/1828/},
  year = {2018}
}

TY  - JOUR
TI  - Appearance of the Comet Encke’s Outburst Activity in Its Positional Observations
AU  - Chernetenko, Yu. A.
PY  - 2018
T2  - Transactions of IAA RAS
IS  - 45
SP  - 124
AB  - An attempt is made to investigate the features of the comet Encke’
coma on the basis of its optical observations. The orbit of the comet
Encke is obtained on the interval from 1993 to 2014 which covers 7
apparitions of the comet and in cludes 3044 observations. The
Marsden’s model has been used to account nongravitational effects.
The analysis of residuals shows that the number of observations where
the O–С values exceed the 3σ criterion grows substantially near the
perihelion passings of all the considered apparitions. Abnormal
observations are focused on about ±100-day intervals with respect to
the perihelion passages. Our analysis  of the O–С shows that it is
possible to assume the existence of emissions in some cases. They are
observed as false cometary nuclei and are showed up in the systematic
deviations of the residuals.
DO  - 10.32876/ApplAstron.45.124-134
UR  - http://iaaras.ru/en/library/paper/1828/
ER  -