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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 34 (heliocentric ecliptic J2000)
| Element | Value | Uncertainty (1-sigma) | Units |
| e | .07609460206921172 | 3.6005e-08 | |
| a | 3.025996370341251 | 1.4519e-08 | au |
| q | 2.795734380677254 | 1.0704e-07 | au |
| i | 11.23876732402993 | 3.249e-06 | deg |
| node | 108.0022238248082 | 2.2674e-05 | deg |
| peri | 227.9847238100257 | 3.4296e-05 | deg |
| M | 7.126276792696051 | 2.5089e-05 | deg |
| tp | 2458962.440663128446
(2020-Apr-22.94066313) | 0.00013402 | TDB |
| period | 1922.65353596741
5.26 | 1.3837e-05
3.788e-08 | d
yr |
| n | .1872412232705572 | 1.3476e-09 | deg/d |
| Q | 3.256258360005247 | 1.5624e-08 | au |
|
| | Orbit Determination Parameters
Additional Information
|
[ show covariance matrix ]
Physical Parameter Table
| Parameter |
Symbol |
Value |
Units |
Sigma |
Reference |
Notes |
| absolute magnitude |
H |
11.3 |
|
n/a |
MPO358672 |
|
| diameter |
diameter |
20.242 |
km |
0.821 |
urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2012ApJ...759L...8M) |
|
| geometric albedo |
albedo |
0.157 |
|
0.040 |
urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2012ApJ...759L...8M) |
|
|
| 4381 Uenohara (1989 WD1) Discovered 1989-Nov-22 by Kawasato, N. at Uenohara |
| Reference: DISCOVERY.DB | Last Updated: 2003-08-29 |
|
[ show close-approach data ]
Alternate Designations
| 1989 WD1 = 1952 UF = 1954 CD = 1955 HS = 1960 HB = 1976 HN = 1978 TO4 = 1979 YQ8 = 1983 TD1 |
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