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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 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 31 (heliocentric ecliptic J2000)
| Element | Value | Uncertainty (1-sigma) | Units |
| e | .04929773216681955 | 3.2837e-08 | |
| a | 2.880609329248737 | 1.1915e-08 | au |
| q | 2.738601822058191 | 9.4259e-08 | au |
| i | .8940153266525435 | 3.7358e-06 | deg |
| node | 292.3749234723664 | 0.00025532 | deg |
| peri | 140.4705273910436 | 0.00025954 | deg |
| M | 146.7545678621795 | 4.5438e-05 | deg |
| tp | 2458472.528967210008
(2018-Dec-20.02896721) | 0.00022533 | TDB |
| period | 1785.767731948982
4.89 | 1.1079e-05
3.033e-08 | d
yr |
| n | .2015939663144753 | 1.2507e-09 | deg/d |
| Q | 3.022616836439283 | 1.2502e-08 | au |
|
| | Orbit Determination Parameters
Additional Information
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[ show covariance matrix ]
Physical Parameter Table
| Parameter |
Symbol |
Value |
Units |
Sigma |
Reference |
Notes |
| absolute magnitude |
H |
14.15 |
|
n/a |
E2021B10 |
|
|
| 9530 Kelleymichael | Discovered 1981 Mar. 2 by S. J. Bus at Siding Spring. |
| Michael Sean Peterson Kelley (b. 1978) is an assistant research scientist at the University of Maryland. He has contributed to an improved understanding of the size, structure, and mineralogy of comet dust through both telescopic measurements and dynamical models. |
| NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character) |
| Reference: MPC batch dated 2014-07-12 | Last Updated: 2014-08-13 |
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