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Orbital Elements at Epoch 2454453.5 (2007-Dec-19.0) TDB
Reference: JPL K215/8 (heliocentric ecliptic J2000)
Element | Value | Uncertainty (1-sigma) | Units |
e | .8198309621312905 | 1.718e-07 | |
a | 5.700931065309506 | 5.8349e-06 | au |
q | 1.027131264992651 | 1.0089e-07 | au |
i | 54.98331415077818 | 1.1818e-05 | deg |
node | 270.3415874631229 | 4.914e-06 | deg |
peri | 207.5071341554478 | 1.8828e-05 | deg |
M | 357.1744012668671 | 5.1146e-06 | deg |
tp | 2454492.523399293734 (2008-Jan-27.02339929) | 1.4551e-05 | TDB |
period | 4971.839625001457 13.61 | 0.007633 2.09e-05 | d yr |
n | .07240780619505492 | 1.1116e-07 | deg/d |
Q | 10.37473086562636 | 1.0619e-05 | au |
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Additional Model Parameters
Parameter | Value | Uncertainty (1-sigma) |
A1 [EST] | 5.501437691421635E-10 | 8.933E-11 |
A2 [EST] | 1.393281828925108E-10 | 2.149E-13 |
A3 [EST] | -4.64177126026373E-10 | 1.047E-10 |
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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 |
14.6 |
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1. |
K215/8 |
2 parameter fit from 195 observations, autocmod 2.9a |
comet total magnitude slope |
K1 |
5.25 |
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n/a |
K215/8 |
autocmod 2.9a |
diameter |
diameter |
4.5 |
km |
1. |
Harmon, J.K.;Nolan,M.C.;Howell,E.S.;Giorgini,J.D. (2008) IAUC 8909 |
equivalent diameter of a sphere having a volume equal to the sum of a 3km and 4km sphere |
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8P/Tuttle Discovered 1790-Jan-09 by Mechain, Pierre F. A. at Paris, France |
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 | 1994.5 | | 1994 XV | 1992r |
1980.8 | | 1980 XIII | 1980h |
1967.2 | | 1967 V | 1967a |
1940.0 | | 1939 X | 1939k |
1926.4 | | 1926 IV | 1926a |
1912.8 | | 1912 IV | 1912b |
1899.2 | | 1899 III | 1899b |
1885.6 | | 1885 IV | 1885b |
1871.9 | 8P/1871 T1 | 1871 III | 1871d |
1858.3 | 8P/1858 A1 | 1858 I | |
1790.3 | 8P/1790 A2 | 1790 II | |
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