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## Model for motion of comet Encke during all its apparitions

Труды ИПА РАН, вып. 26, 99–109 (2012)

Ключевые слова: comet motion, apparition, nongravitational effects, Marsden's model

### Аннотация

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

### Цитирование

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V. Usanin. Model for motion of comet Encke during all its apparitions // Труды ИПА РАН. — 2012. — Вып. 26. — С. 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 = {Труды ИПА РАН}, 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/library/paper/902/}, year = {2012} } TY - JOUR TI - Model for motion of comet Encke during all its apparitions AU - Usanin, V. PY - 2012 T2 - Труды ИПА РАН 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/library/paper/902/ ER -