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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 35 (heliocentric ecliptic J2000)
| Element | Value | Uncertainty (1-sigma) | Units |
| e | .124678445860325 | 6.3644e-08 | |
| a | 5.173063185200728 | 9.0002e-08 | au |
| q | 4.528093706932639 | 3.8384e-07 | au |
| i | 21.08978510674153 | 4.5327e-06 | deg |
| node | 227.5674560509748 | 1.4297e-05 | deg |
| peri | 177.6466302149193 | 2.5297e-05 | deg |
| M | 329.1611605814415 | 2.0428e-05 | deg |
| tp | 2459568.642219405823
(2021-Dec-20.14221941) | 0.00024445 | TDB |
| period | 4297.541719625806
11.77 | 0.00011215
3.07e-07 | d
yr |
| n | .08376882028997401 | 2.1861e-09 | deg/d |
| Q | 5.818032663468817 | 1.0122e-07 | au |
|
| | Orbit Determination Parameters
Additional Information
|
[ show covariance matrix ]
Physical Parameter Table
| Parameter |
Symbol |
Value |
Units |
Sigma |
Reference |
Notes |
| absolute magnitude |
H |
10.97 |
|
n/a |
E2021B10 |
|
| diameter |
diameter |
30.252 |
km |
4.843 |
urn:nasa:pds:neowise_diameters_albedos::2.0[jupiter_trojans] (http://adsabs.harvard.edu/abs/2012ApJ...759...49G) |
|
| rotation period |
rot_per |
7.284 |
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:
[Duffard, R. Melita, M.; Ortiz, J.; Licandro, J.; et al. (2008) ACM 2008, 8187.]
[Melita, M.D.; Duffard, R.; Williams, I.P.; Jones, D.C.; et al. (2010) Planet. Space Sci. 58, 1035-1039.]
[Ryan, E.L.; Sharkey, B.N.L.; Woodward, C.E. (2017) Astron. J. 153, A116.]
[Szabo, Gy.M.; Pal, A.; Kiss, Cs.; Kiss, L.L.; et al. (2017) Astron. Astrophys. 599, A44.] |
| geometric albedo |
albedo |
0.092 |
|
0.017 |
urn:nasa:pds:neowise_diameters_albedos::2.0[jupiter_trojans] (http://adsabs.harvard.edu/abs/2012ApJ...759...49G) |
|
|
| 12238 Actor | Discovered 1987 Dec. 17 by E. W. Elst and G. Pizarro at the European Southern Observatory. |
| Actor was the alleged father of Cteatos and Eurytos, two Greek warriors who beat Nestor in the chariot race. |
| NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character) |
| Reference: 20030106/MPCPages.arc | Last Updated: 2003-10-02 |
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