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Orbital Elements at Epoch 2455519.5 (2010-Nov-19.0) TDB
Reference: JPL K193/20 (heliocentric ecliptic J2000)
Element | Value | Uncertainty (1-sigma) | Units |
e | .1928816065088364 | 9.1075e-08 | |
a | 4.242644592056441 | 5.1974e-08 | au |
q | 3.424316487294568 | 3.8807e-07 | au |
i | 4.546588725017729 | 1.037e-05 | deg |
node | 114.1883629970298 | 0.00010925 | deg |
peri | 17.92942925321878 | 0.00012863 | deg |
M | 5.700608668425044 | 5.0739e-05 | deg |
tp | 2455468.955706155045 (2010-Sep-29.45570615) | 0.00044978 | TDB |
period | 3191.930343327873 8.74 | 5.8654e-05 1.606e-07 | d yr |
n | .1127844160987134 | 2.0725e-09 | deg/d |
Q | 5.060972696818314 | 6.1999e-08 | au |
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Additional Model Parameters
Parameter | Value | Uncertainty (1-sigma) |
A2 [EST] | -5.324836119346194E-8 | 1.489E-9 |
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| | Orbit Determination Parameters
Additional Information
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[ show covariance matrix ]
Physical Parameter Table
Parameter |
Symbol |
Value |
Units |
Sigma |
Reference |
Notes |
comet total magnitude |
M1 |
5.1 |
|
0.7 |
K193/20 |
2 parameter fit from 606 observations, autocmod 2.9b |
comet total magnitude slope |
K1 |
21.25 |
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n/a |
K193/20 |
autocmod 2.9b |
comet nuclear magnitude |
M2 |
14.0 |
|
0.6 |
K193/20 |
from 291 observations, autocmod 2.9b |
comet nuclear magnitude slope |
K2 |
5. |
|
n/a |
K193/20 |
autocmod 2.9b |
comet nuclear phase coefficient |
PC |
0.03 |
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n/a |
K193/20 |
autocmod 2.9b |
diameter |
diameter |
6.2 |
km |
n/a |
Lamy,P.L.,Toth,I.,Fernandez,Y.R.,Weaver,H.A. (2004) Comets II, pp. 223-264 |
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31P/Schwassmann-Wachmann 2 Discovered 1929-Jan-17 by Schwassmann, A. and Wachmann, A. A. at Hamburg Observatory, Germany |
discovered on plate/photo taken on discovery date |
Reference: comet.dis | Last Updated: 2003-08-29 |
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[ show close-approach data ]
Alternate Designations
Perihelion Year (est.) | New-Style Desig | Roman Numeral | Year/ Letter | 1993.3 | | 1994 II | |
1984.5 | | 1981 VI | 1986h |
1975.8 | | 1974 XIII | 1979k |
1967.0 | | 1968 II | 1967i |
1958.3 | | 1955 I | 1960j |
1949.6 | | 1948 VII | 1947l |
1940.8 | | 1942 I | 1941f |
1932.1 | 31P/1929 B1 | 1929 I | 1929a |
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