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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 23 (heliocentric ecliptic J2000)
| Element | Value | Uncertainty (1-sigma) | Units |
| e | .190993131365268 | 3.7907e-08 | |
| a | 2.554488244529883 | 1.174e-08 | au |
| q | 2.066598535671354 | 9.5663e-08 | au |
| i | 8.082833112158182 | 4.8928e-06 | deg |
| node | 166.0696242506448 | 3.3525e-05 | deg |
| peri | 237.3051925495467 | 3.6718e-05 | deg |
| M | 344.3766202040451 | 1.7821e-05 | deg |
| tp | 2459065.218252058952
(2020-Aug-03.71825206) | 7.3975e-05 | TDB |
| period | 1491.263161077023
4.08 | 1.028e-05
2.815e-08 | d
yr |
| n | .2414060840475668 | 1.6641e-09 | deg/d |
| Q | 3.042377953388412 | 1.3982e-08 | au |
|
| | Orbit Determination Parameters
Additional Information
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Physical Parameter Table
| Parameter |
Symbol |
Value |
Units |
Sigma |
Reference |
Notes |
| absolute magnitude |
H |
14.6 |
|
n/a |
MPO449112 |
|
| diameter |
diameter |
3.792 |
km |
0.827 |
urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M) |
|
| geometric albedo |
albedo |
0.162 |
|
0.075 |
urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M) |
|
|
| 21672 Laichunju | Discovered 1999 Sept. 7 by the Lincoln Laboratory Near-Earth Asteroid Research Team at Socorro. |
| Lai Chun-Ju (b. 1986) was awarded second place in the 2005 Intel International Science and Engineering Fair for his mathematics project. He attends the Taipei Municipal Chien-Kuo Senior High School, Taipei City, Chinese Taipei. |
| NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character) |
| Reference: 20050822/MPCPages.arc | Last Updated: 2005-08-26 |
|
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Alternate Designations
| 1999 RK14 = 1991 TY5 = 1995 SW2 = 1997 ET18 |
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