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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 34 (heliocentric ecliptic J2000)
| Element | Value | Uncertainty (1-sigma) | Units |
| e | .07513556194534747 | 8.9246e-09 | |
| a | 2.307023443645953 | 5.345e-09 | au |
| q | 2.133683940786524 | 2.255e-08 | au |
| i | 2.190123888329657 | 6.5654e-07 | deg |
| node | 168.3329862216321 | 2.4009e-05 | deg |
| peri | 216.0069278577989 | 2.675e-05 | deg |
| M | 355.26454658691 | 1.2258e-05 | deg |
| tp | 2459217.335867773417
(2021-Jan-02.83586777) | 4.3584e-05 | TDB |
| period | 1279.901177293018
3.50 | 4.448e-06
1.218e-08 | d
yr |
| n | .281271715650264 | 9.7749e-10 | deg/d |
| Q | 2.480362946505382 | 5.7466e-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 |
14.27 |
|
n/a |
E2021B10 |
|
|
| 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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