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For accurate long-term ephemerides, please instead use our Horizons system.This orbit viewer was implemented using two-body methods, and hence should not be used for determining accurate long-term trajectories (over several years or decades) or planetary encounter circumstances.
Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 29 (heliocentric ecliptic J2000)
| Element | Value | Uncertainty (1-sigma) | Units |
| e | .1276156789774095 | 3.9713e-08 | |
| a | 2.227750822471844 | 6.1427e-09 | au |
| q | 1.943454888669617 | 9.0079e-08 | au |
| i | 3.400661776958933 | 4.1892e-06 | deg |
| node | 322.7554152249705 | 5.7134e-05 | deg |
| peri | 26.26981116273452 | 5.8873e-05 | deg |
| M | 63.70404066975733 | 1.2625e-05 | deg |
| tp | 2458785.586931453825
(2019-Oct-29.08693145) | 4.2718e-05 | TDB |
| period | 1214.502311991533
3.33 | 5.0232e-06
1.375e-08 | d
yr |
| n | .2964177148495291 | 1.226e-09 | deg/d |
| Q | 2.512046756274071 | 6.9266e-09 | au |
|
| | Orbit Determination Parameters
Additional Information
|
[ hide covariance matrix ]
Orbital Elements at Epoch 2456931.5 (2014-Oct-01.0) TDB
Reference: JPL 29 (heliocentric ecliptic J2000)
| Element | Value | Uncertainty (1-sigma) | Units |
| e | .1281312500666645 | 3.9734e-08 | |
| q | 1.942398164794148 | 9.0209e-08 | au |
| tp | 2456357.094482340377
(2013-Mar-05.59448234) | 4.516e-05 | TDB |
| node | 322.8407133260251 | 5.7124e-05 | deg |
| peri | 26.31512383462769 | 5.8845e-05 | deg |
| i | 3.400981924618422 | 4.1902e-06 | deg |
|
| | Orbit Determination Parameters
Additional Information
|
Orbit Covariance (6×6)
|
| |
e |
q |
tp |
node |
peri |
i |
| e |
1.57876810416679E-15 |
-3.578380585592029E-15 |
1.459813874158384E-13 |
7.158489770601502E-15 |
3.312402099509776E-14 |
-1.326583825216392E-15 |
| q |
-3.578380585592029E-15 |
8.137708587321105E-15 |
-4.192893785069067E-13 |
-1.702927423273823E-14 |
-9.876638975370322E-14 |
3.074686532740376E-15 |
| tp |
1.459813874158384E-13 |
-4.192893785069067E-13 |
2.039415833133699E-9 |
-3.900081887954789E-12 |
6.45642680403435E-10 |
-9.577865685696309E-13 |
| node |
7.158489770601502E-15 |
-1.702927423273823E-14 |
-3.900081887954789E-12 |
3.263185781338669E-9 |
-3.258271023598237E-9 |
7.088069883938846E-11 |
| peri |
3.312402099509776E-14 |
-9.876638975370322E-14 |
6.45642680403435E-10 |
-3.258271023598237E-9 |
3.462754286927675E-9 |
-7.105755207270771E-11 |
| i |
-1.326583825216392E-15 |
3.074686532740376E-15 |
-9.577865685696309E-13 |
7.088069883938846E-11 |
-7.105755207270771E-11 |
1.755814308792393E-11 |
|
Physical Parameter Table
| Parameter |
Symbol |
Value |
Units |
Sigma |
Reference |
Notes |
| absolute magnitude |
H |
14.6 |
|
n/a |
MPO337328 |
|
|
| 8569 Mameli | Discovered 1996 Oct. 1 by V. S. Casulli at the Colleverde di Guidonia. |
| The poet Goffredo Mameli (1827-1849) was the patriotic Italian author of the national anthem Fratelli d´Italia. |
| NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character) |
| Reference: 20040504/MPCPages.arc | Last Updated: 2004-05-11 |
|
Alternate Designations
| 1996 TG = 1986 RD11 = 1992 QQ2 |
|
|
