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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 31 (heliocentric ecliptic J2000)
| Element | Value | Uncertainty (1-sigma) | Units |
| e | .0590000160122218 | 5.4339e-08 | |
| a | 5.271507167423276 | 8.904e-08 | au |
| q | 4.960488160136761 | 2.9272e-07 | au |
| i | 20.36643176598422 | 5.3113e-06 | deg |
| node | 147.5156168850916 | 1.3766e-05 | deg |
| peri | 218.2967466058399 | 4.7946e-05 | deg |
| M | 213.7303332558981 | 5.001e-05 | deg |
| tp | 2460796.690520440765
(2025-May-01.19052044) | 0.00064118 | TDB |
| period | 4420.797570353046
12.10 | 0.00011201
3.067e-07 | d
yr |
| n | .08143326951096977 | 2.0632e-09 | deg/d |
| Q | 5.58252617470979 | 9.4293e-08 | au |
|
| | Orbit Determination Parameters
Additional Information
|
[ show covariance matrix ]
Physical Parameter Table
| Parameter |
Symbol |
Value |
Units |
Sigma |
Reference |
Notes |
| absolute magnitude |
H |
10.2 |
|
n/a |
MPO350865 |
|
| diameter |
diameter |
42.516 |
km |
0.955 |
urn:nasa:pds:neowise_diameters_albedos::2.0[jupiter_trojans] (http://adsabs.harvard.edu/abs/2012ApJ...759...49G) |
|
| geometric albedo |
albedo |
0.089 |
|
0.008 |
urn:nasa:pds:neowise_diameters_albedos::2.0[jupiter_trojans] (http://adsabs.harvard.edu/abs/2012ApJ...759...49G) |
|
|
| 7815 Dolon (1987 QN) Discovered 1987-Aug-21 by Elst, E. W. at La Silla |
| Reference: DISCOVERY.DB | Last Updated: 2003-08-29 |
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