Abstract
We examine intermediate perturbed orbits proposed by the first author previously, defined from the two position vectors and three angular coordinates of a small celestial body. It is shown theoretically, that at a small reference time interval covering the measurements the approximation accuracy of real movements by these orbits corresponds approximately to the third order of osculation. The smaller reference interval of time, the better this correspondence. Laws of variation of the methodical errors in constructing intermediate orbits subject to the length of reference time interval are deduced. According to these laws, the convergence rate of the methods to the exact solution (upon reducing the reference interval of time) is higher by two orders of magnitude than in the case of conventional methods using the Keplerian unperturbed orbit. The considered orbits are among the most accurate in set of orbits of their class determined by the order of osculation. The theoretical results are validated by numerical examples.
| Original language | English |
|---|---|
| Pages (from-to) | 51-60 |
| Number of pages | 10 |
| Journal | Solar System Research |
| Volume | 49 |
| Issue number | 1 |
| DOIs | |
| Publication status | Published - 2015 |
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Keywords
- Gauss method of determining preliminary orbit
- initial orbit determination
- intermediate perturbed orbit
- superosculating orbit
ASJC Scopus subject areas
- Astronomy and Astrophysics
- Space and Planetary Science
Cite this
On the accuracy of approximation of a small celestial body motion using intermediate perturbed orbits calculated from two position vectors and three observations. / Shefer, V. A.; Shefer, O. V.
In: Solar System Research, Vol. 49, No. 1, 2015, p. 51-60.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - On the accuracy of approximation of a small celestial body motion using intermediate perturbed orbits calculated from two position vectors and three observations
AU - Shefer, V. A.
AU - Shefer, O. V.
PY - 2015
Y1 - 2015
N2 - We examine intermediate perturbed orbits proposed by the first author previously, defined from the two position vectors and three angular coordinates of a small celestial body. It is shown theoretically, that at a small reference time interval covering the measurements the approximation accuracy of real movements by these orbits corresponds approximately to the third order of osculation. The smaller reference interval of time, the better this correspondence. Laws of variation of the methodical errors in constructing intermediate orbits subject to the length of reference time interval are deduced. According to these laws, the convergence rate of the methods to the exact solution (upon reducing the reference interval of time) is higher by two orders of magnitude than in the case of conventional methods using the Keplerian unperturbed orbit. The considered orbits are among the most accurate in set of orbits of their class determined by the order of osculation. The theoretical results are validated by numerical examples.
AB - We examine intermediate perturbed orbits proposed by the first author previously, defined from the two position vectors and three angular coordinates of a small celestial body. It is shown theoretically, that at a small reference time interval covering the measurements the approximation accuracy of real movements by these orbits corresponds approximately to the third order of osculation. The smaller reference interval of time, the better this correspondence. Laws of variation of the methodical errors in constructing intermediate orbits subject to the length of reference time interval are deduced. According to these laws, the convergence rate of the methods to the exact solution (upon reducing the reference interval of time) is higher by two orders of magnitude than in the case of conventional methods using the Keplerian unperturbed orbit. The considered orbits are among the most accurate in set of orbits of their class determined by the order of osculation. The theoretical results are validated by numerical examples.
KW - Gauss method of determining preliminary orbit
KW - initial orbit determination
KW - intermediate perturbed orbit
KW - superosculating orbit
UR - http://www.scopus.com/inward/record.url?scp=84921395907&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=84921395907&partnerID=8YFLogxK
U2 - 10.1134/S0038094615010074
DO - 10.1134/S0038094615010074
M3 - Article
VL - 49
SP - 51
EP - 60
JO - Solar System Research
JF - Solar System Research
SN - 0038-0946
IS - 1
ER -