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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 40 (heliocentric ecliptic J2000)
| Element | Value | Uncertainty (1-sigma) | Units |
| e | .1144363343235902 | 3.9477e-08 | |
| a | 5.288728696079111 | 7.064e-08 | au |
| q | 4.683505970867836 | 2.521e-07 | au |
| i | 18.03080452022333 | 1.9608e-06 | deg |
| node | 332.8822074257156 | 7.5645e-06 | deg |
| peri | 61.19747028347712 | 1.2028e-05 | deg |
| M | 342.7156900600124 | 1.3603e-05 | deg |
| tp | 2459609.792166177056
(2022-Jan-30.29216618) | 0.00016916 | TDB |
| period | 4442.478761972206
12.16 | 8.9006e-05
2.437e-07 | d
yr |
| n | .08103584041450333 | 1.6236e-09 | deg/d |
| Q | 5.893951421290384 | 7.8724e-08 | au |
|
| | Orbit Determination Parameters
Additional Information
|
[ show covariance matrix ]
Physical Parameter Table
| Parameter |
Symbol |
Value |
Units |
Sigma |
Reference |
Notes |
| absolute magnitude |
H |
9.41 |
|
n/a |
E2021B10 |
|
| diameter |
diameter |
83.990 |
km |
1.279 |
urn:nasa:pds:neowise_diameters_albedos::2.0[jupiter_trojans] (http://adsabs.harvard.edu/abs/2012ApJ...759...49G) |
|
| rotation period |
rot_per |
29.38 |
h |
n/a |
LCDB (Rev. 2020-October); Warner et al., 2009 |
Published Reference List:
[Binzel, R.P.; Sauter, L.M. (1992) Icarus 95, 222-238.]
[French, L.M.; Stephens, R.D.; Lederer, S.M.; Coley, D.R.; Rohl, D.A. (2011) Minor Planet Bull. 38, 116-120.] |
| geometric albedo |
albedo |
0.048 |
|
0.009 |
urn:nasa:pds:neowise_diameters_albedos::2.0[jupiter_trojans] (http://adsabs.harvard.edu/abs/2012ApJ...759...49G) |
|
|
| 1404 Ajax (1936 QW) Discovered 1936-Aug-17 by Reinmuth, K. at Heidelberg |
| Reference: DISCOVERY.DB | Last Updated: 2003-08-29 |
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