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Title: NONGRAVITATIONAL FORCES ON COMETS: AN EXTENSION OF THE STANDARD MODEL

Abstract

The accuracy of comet orbit computations is limited by uncertain knowledge of the recoil force due to outgassing from the nuclei. The standard model assumes an exponential dependence of the force on distance from the Sun. This variable force times constants A{sub 1}, A{sub 2}, and A{sub 3} represents the radial, transverse, and normal components of the net force. Orbit solutions show that the As often vary considerably over a few apparitions of the comets. In this paper, we allow for time variations of the As, and we show that for several comets this improves the orbit accuracy considerably.

Authors:
 [1];  [2]
  1. Institute of Theoretical Astrophysics, University of Oslo (Norway)
  2. Norwegian Mapping Authority, Hoenefoss (Norway)
Publication Date:
OSTI Identifier:
21582927
Resource Type:
Journal Article
Journal Name:
Astronomical Journal (New York, N.Y. Online)
Additional Journal Information:
Journal Volume: 142; Journal Issue: 3; Other Information: DOI: 10.1088/0004-6256/142/3/81; Journal ID: ISSN 1538-3881
Country of Publication:
United States
Language:
English
Subject:
79 ASTROPHYSICS, COSMOLOGY AND ASTRONOMY; ACCURACY; CALCULATION METHODS; COMETS; ORBITS; SUN; MAIN SEQUENCE STARS; STARS

Citation Formats

Aksnes, K., and Mysen, E., E-mail: kaare.aksnes@astro.uio.no. NONGRAVITATIONAL FORCES ON COMETS: AN EXTENSION OF THE STANDARD MODEL. United States: N. p., 2011. Web. doi:10.1088/0004-6256/142/3/81.
Aksnes, K., & Mysen, E., E-mail: kaare.aksnes@astro.uio.no. NONGRAVITATIONAL FORCES ON COMETS: AN EXTENSION OF THE STANDARD MODEL. United States. doi:10.1088/0004-6256/142/3/81.
Aksnes, K., and Mysen, E., E-mail: kaare.aksnes@astro.uio.no. Thu . "NONGRAVITATIONAL FORCES ON COMETS: AN EXTENSION OF THE STANDARD MODEL". United States. doi:10.1088/0004-6256/142/3/81.
@article{osti_21582927,
title = {NONGRAVITATIONAL FORCES ON COMETS: AN EXTENSION OF THE STANDARD MODEL},
author = {Aksnes, K. and Mysen, E., E-mail: kaare.aksnes@astro.uio.no},
abstractNote = {The accuracy of comet orbit computations is limited by uncertain knowledge of the recoil force due to outgassing from the nuclei. The standard model assumes an exponential dependence of the force on distance from the Sun. This variable force times constants A{sub 1}, A{sub 2}, and A{sub 3} represents the radial, transverse, and normal components of the net force. Orbit solutions show that the As often vary considerably over a few apparitions of the comets. In this paper, we allow for time variations of the As, and we show that for several comets this improves the orbit accuracy considerably.},
doi = {10.1088/0004-6256/142/3/81},
journal = {Astronomical Journal (New York, N.Y. Online)},
issn = {1538-3881},
number = 3,
volume = 142,
place = {United States},
year = {2011},
month = {9}
}