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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 24 (heliocentric ecliptic J2000)
| Element | Value | Uncertainty (1-sigma) | Units |
| e | .1474386148198965 | 4.9099e-08 | |
| a | 2.353690892075949 | 9.5225e-09 | au |
| q | 2.006665967234064 | 1.1389e-07 | au |
| i | 2.541394883184709 | 5.5424e-06 | deg |
| node | 22.93012438965104 | 8.0603e-05 | deg |
| peri | 143.1284057728902 | 8.2025e-05 | deg |
| M | 176.9829981661353 | 1.6458e-05 | deg |
| tp | 2458352.087148073456
(2018-Aug-21.58714807) | 5.8229e-05 | TDB |
| period | 1318.932491325718
3.61 | 8.0042e-06
2.191e-08 | d
yr |
| n | .2729480108857945 | 1.6564e-09 | deg/d |
| Q | 2.700715816917833 | 1.0927e-08 | au |
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| | 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 |
15.4 |
|
n/a |
MPO435868 |
|
| rotation period |
rot_per |
4.249 |
h |
n/a |
LCDB (Rev. 2020-October); Warner et al., 2009 |
Result based on less than full coverage, so that the period may be wrong by 30 percent or so.
Published Reference List:
[Waszczak, A.; Chang, C.-K.; Ofeck, E.O.; Laher, F.; et al. (2015) Astron. J. 150, A75.] |
|
| 18242 Peebles | Discovered 1973 Sept. 29 by C. J. van Houten and I. van Houten-Groeneveld on Palomar Schmidt plates taken by T. Gehrels. |
| Princeton theoretical cosmologist Jim Peebles (b. 1935) plays a central role in the understanding of the evolution and structure of the universe. His studies of the evolution of matter in the earliest moments of the universe were critical in the establishment of the Big Bang theory as a widely accepted hypothesis. |
| NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character) |
| Reference: 20040306/MPCPages.arc | Last Updated: 2004-03-08 |
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