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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 2459000.5 (2020-May-31.0) TDB
Reference: JPL 19 (heliocentric ecliptic J2000)
| Element | Value | Uncertainty (1-sigma) | Units |
| e | .02029412790627038 | 3.3426e-08 | |
| a | 2.750035104796292 | 1.5352e-08 | au |
| q | 2.694225540632822 | 9.3202e-08 | au |
| i | 6.059276480530745 | 4.3929e-06 | deg |
| node | 154.3273384850508 | 3.603e-05 | deg |
| peri | 96.63831113151238 | 0.00011794 | deg |
| M | 156.9817612515893 | 0.00011205 | deg |
| tp | 2458274.139063290589
(2018-Jun-04.63906329) | 0.00051926 | TDB |
| period | 1665.734510369693
4.56 | 1.3948e-05
3.819e-08 | d
yr |
| n | .2161208750607573 | 1.8097e-09 | deg/d |
| Q | 2.805844668959761 | 1.5663e-08 | au |
|
| | Orbit Determination Parameters
Additional Information
|
[ show covariance matrix ]
Physical Parameter Table
| Parameter |
Symbol |
Value |
Units |
Sigma |
Reference |
Notes |
| absolute magnitude |
H |
15.2 |
|
n/a |
MPO449654 |
|
| diameter |
diameter |
4.829 |
km |
0.305 |
urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M) |
|
| geometric albedo |
albedo |
0.052 |
|
0.004 |
urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M) |
|
|
| 109903 (2001 SL21) Discovered 2001-Sep-16 by LINEAR at Socorro |
| Reference: 20051019/Numbers.arc | Last Updated: 2005-10-26 |
|
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