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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 35 (heliocentric ecliptic J2000)
| Element | Value | Uncertainty (1-sigma) | Units |
| e | .1147222397690661 | 5.4437e-08 | |
| a | 5.294003637539105 | 7.6602e-08 | au |
| q | 4.686663682895036 | 3.3476e-07 | au |
| i | 18.02582613050427 | 6.5879e-06 | deg |
| node | 332.8779859593355 | 1.206e-05 | deg |
| peri | 60.61500843812647 | 2.8133e-05 | deg |
| M | 311.1547803540633 | 2.5094e-05 | deg |
| tp | 2459604.162705799696
(2022-Jan-24.66270580) | 0.00031252 | TDB |
| period | 4449.126765385903
12.18 | 9.6565e-05
2.644e-07 | d
yr |
| n | .08091475450886029 | 1.7562e-09 | deg/d |
| Q | 5.901343592183174 | 8.539e-08 | au |
|
| | Orbit Determination Parameters
Additional Information
|
[ show covariance matrix ]
Physical Parameter Table
| Parameter |
Symbol |
Value |
Units |
Sigma |
Reference |
Notes |
| absolute magnitude |
H |
9.3 |
|
n/a |
MPO263357 |
|
| 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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