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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 17 (heliocentric ecliptic J2000)
| Element | Value | Uncertainty (1-sigma) | Units |
| e | .04079715216893329 | 5.2996e-08 | |
| a | 2.637328779913977 | 2.4986e-08 | au |
| q | 2.529733276360319 | 1.482e-07 | au |
| i | 21.25991889779391 | 5.4589e-06 | deg |
| node | 253.3645326368413 | 1.5851e-05 | deg |
| peri | 171.9390094592304 | 7.9353e-05 | deg |
| M | 306.9506431084624 | 7.9626e-05 | deg |
| tp | 2459431.027351403075
(2021-Aug-04.52735140) | 0.00034725 | TDB |
| period | 1564.389303998244
4.28 | 2.2232e-05
6.087e-08 | d
yr |
| n | .2301217472402279 | 3.2703e-09 | deg/d |
| Q | 2.744924283467634 | 2.6005e-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 |
15.76 |
|
n/a |
E2021B55 |
|
|
| 283142 Weena | Discovered 2008 Dec. 29 by E. Schwab and R. Kling at Taunus. |
| Weena is the major female character in "The Time Machine", an 1895 novel by H. G. Wells. In the 1960 film version, which received an Oscar for time-lapse photographic effects, the role of Weena was played by the actress Yvette Mimieux. |
| NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character) |
| Reference: MPC batch dated 2013-12-17 | Last Updated: 2013-12-19 |
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