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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 14 (heliocentric ecliptic J2000)
| Element | Value | Uncertainty (1-sigma) | Units |
| e | .04080967210492408 | 4.9097e-08 | |
| a | 2.607889586127436 | 1.9372e-08 | au |
| q | 2.50146246723173 | 1.1988e-07 | au |
| i | 5.131308168327607 | 4.397e-06 | deg |
| node | 93.79763738046323 | 5.6229e-05 | deg |
| peri | 81.04652433715363 | 8.1441e-05 | deg |
| M | 108.5686951914605 | 5.8727e-05 | deg |
| tp | 2458736.589347938717
(2019-Sep-10.08934794) | 0.00024979 | TDB |
| period | 1538.26878408683
4.21 | 1.714e-05
4.693e-08 | d
yr |
| n | .2340293216141082 | 2.6077e-09 | deg/d |
| Q | 2.714316705023143 | 2.0163e-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 |
16.41 |
|
n/a |
E2021B55 |
|
|
| 157194 Saddlemyer | Discovered 2004 Aug. 21 by D. D. Balam at Mauna Kea. |
| Leslie K. Saddlemyer (b. 1959) is a systems engineer at the Herzberg Institute of Astrophysics, National Research Council of Canada. Currently the project manager for the Gemini Planetary Imager, he has been responsible for care and maintenance of the 1.82-m Plaskett Telescope at the Dominion Astrophysical Observatory. |
| NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character) |
| Reference: 20070730/MPCPages.arc | Last Updated: 2007-08-07 |
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