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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.
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Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 29 (heliocentric ecliptic J2000)
| Element | Value | Uncertainty (1-sigma) | Units |
| e | .07533372257171507 | 3.5329e-08 | |
| a | 2.307745297223389 | 5.5466e-09 | au |
| q | 2.133894253236182 | 8.2776e-08 | au |
| i | 2.189712390786994 | 3.898e-06 | deg |
| node | 168.335030871984 | 6.4024e-05 | deg |
| peri | 215.8250257426981 | 6.6776e-05 | deg |
| M | 299.1956681042834 | 1.8804e-05 | deg |
| tp | 2459216.777957222609
(2021-Jan-02.27795722) | 6.6961e-05 | TDB |
| period | 1280.501934198938
3.51 | 4.6165e-06
1.264e-08 | d
yr |
| n | .2811397549549275 | 1.0136e-09 | deg/d |
| Q | 2.481596341210595 | 5.9645e-09 | 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 |
14.2 |
|
n/a |
MPO337357 |
|
|
| 11715 Harperclark | Discovered 1998 Apr. 21 by the Lincoln Laboratory Near-Earth Asteroid Research Team at Socorro. |
| Elizabeth Dee Pauline Harper-Clark (b. 1984) is a finalist in the 2002 Intel International Science and Engineering Fair for her earth and space sciences project. She attends the Presdale School, Ware, Hertfordshire, U.K. |
| NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character) |
| Reference: 20020724/MPCPages.arc | Last Updated: 2003-10-02 |
|
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Alternate Designations
| 1998 HA75 = 1978 TU9 = 1985 RC6 = 1991 JY5 = 1997 YX10 |
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