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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 33 (heliocentric ecliptic J2000)
| Element | Value | Uncertainty (1-sigma) | Units |
| e | .05905250811459024 | 4.0689e-08 | |
| a | 2.554222889843805 | 1.3138e-08 | au |
| q | 2.403389621914831 | 9.6859e-08 | au |
| i | 14.61448379371716 | 5.124e-06 | deg |
| node | 330.2794720231669 | 1.6161e-05 | deg |
| peri | 296.3155104349208 | 7.6635e-05 | deg |
| M | 117.1105390892857 | 7.8608e-05 | deg |
| tp | 2458715.457163392138
(2019-Aug-19.95716339) | 0.00032575 | TDB |
| period | 1491.03080334813
4.08 | 1.1504e-05
3.15e-08 | d
yr |
| n | .2414437040412679 | 1.8629e-09 | deg/d |
| Q | 2.705056157772778 | 1.3914e-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 |
13.92 |
|
n/a |
E2021B10 |
|
| diameter |
diameter |
4.468 |
km |
0.150 |
urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M) |
|
| geometric albedo |
albedo |
0.185 |
|
0.024 |
urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M) |
|
|
| 21071 (1991 PE7) Discovered 1991-Aug-06 by Elst, E. W. at La Silla |
| Reference: 20010208/Numbers.arc | Last Updated: 2004-04-19 |
|
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|
