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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 2459396.5 (2021-Jul-01.0) TDB
Reference: JPL 30 (heliocentric ecliptic J2000)
| Element | Value | Uncertainty (1-sigma) | Units |
| e | .07060577354255193 | 3.6902e-08 | |
| a | 2.952862028151766 | 1.6817e-08 | au |
| q | 2.744372920489682 | 1.0459e-07 | au |
| i | 2.379611303435251 | 5.1561e-06 | deg |
| node | 162.8049887362424 | 0.00010724 | deg |
| peri | 102.8251598621337 | 0.00011499 | deg |
| M | 225.6981182252638 | 4.313e-05 | deg |
| tp | 2460087.921303647903
(2023-May-23.42130365) | 0.00022324 | TDB |
| period | 1853.374398213893
5.07 | 1.5833e-05
4.335e-08 | d
yr |
| n | .1942403004740618 | 1.6593e-09 | deg/d |
| Q | 3.16135113581385 | 1.8004e-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 |
14.33 |
|
n/a |
E2021B10 |
|
|
| 15849 Billharper | Discovered 1995 Dec. 18 by Spacewatch at Kitt Peak. |
| William Leonard Harper (b. 1943) specializes in the philosophy of science. He earned a Ph.D. at the University of Rochester and has been in the department of philosophy at the University of Western Ontario since 1970. The name was suggested by R. Jedicke and P. Jedicke. |
| NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character) |
| Reference: 20050523/MPCPages.arc | Last Updated: 2005-07-21 |
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