[ hide orbit diagram ]
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 80 (heliocentric ecliptic J2000)
| Element | Value | Uncertainty (1-sigma) | Units |
| e | .1471215408945946 | 4.0871e-08 | |
| a | 5.209393782387003 | 6.1368e-08 | au |
| q | 4.442979741995507 | 2.4218e-07 | au |
| i | 10.31973109440609 | 5.0646e-06 | deg |
| node | 316.5360168458093 | 2.205e-05 | deg |
| peri | 133.3085424101011 | 2.8662e-05 | deg |
| M | 271.7364412652858 | 2.0013e-05 | deg |
| tp | 2460065.275724164068
(2023-Apr-30.77572416) | 0.00025246 | TDB |
| period | 4342.893785318271
11.89 | 7.6741e-05
2.101e-07 | d
yr |
| n | .08289403743122335 | 1.4648e-09 | deg/d |
| Q | 5.975807822778498 | 7.0397e-08 | au |
|
| | Orbit Determination Parameters
Additional Information
|
[ show covariance matrix ]
Physical Parameter Table
| Parameter |
Symbol |
Value |
Units |
Sigma |
Reference |
Notes |
| absolute magnitude |
H |
8.3 |
|
n/a |
MPO502158 |
IRAS observations used: 15 |
| diameter |
diameter |
130.099 |
km |
0.554 |
urn:nasa:pds:neowise_diameters_albedos::2.0[jupiter_trojans] (http://adsabs.harvard.edu/abs/2012ApJ...759...49G) |
|
| rotation period |
rot_per |
7.306 |
h |
n/a |
LCDB (Rev. 2020-October); Warner et al., 2009 |
Published Reference List:
[Angeli, C.A.; Lazzaro, D.; Florczak, A.; Betzler, A.S.; Carvano, J.M. (1999) Planet. Space Sci. 47, 699-714.]
[Shevchenko, V.G.; Krugly, Yu.N.; Belskaya, N.; Chirony, V.G.; et al. (2009) Lunar & Planetary Sci. XL, #1391.]
[Stephens, R.D. (2010) Minor Planet Bull. 37, 47-48.]
[Mottola, S.; Di Martino, M.; Erikson, A.; Gonano-Beurer, M.; et al. (2011) Astron. J. 141, A170.]
[Shevchenko, V.G.; Belskya, I.N.; Slyusarev, L.G.; Krugly, Yu.N.; et al. (2012) Icarus 217, 202-208.] |
| geometric albedo |
albedo |
0.043 |
|
0.006 |
urn:nasa:pds:neowise_diameters_albedos::2.0[jupiter_trojans] (http://adsabs.harvard.edu/abs/2012ApJ...759...49G) |
|
| B-V |
BV |
0.755 |
|
0.033 |
EAR-A-5-DDR-UBV-MEAN-VALUES-V1.2 |
#obs=4; phase (min.=2.65, mean=3.34, max.=3.58) deg. |
| U-B |
UB |
0.216 |
|
0.030 |
EAR-A-5-DDR-UBV-MEAN-VALUES-V1.2 |
#obs=4; phase (min.=2.65, mean=3.34, max.=3.58) deg. |
| Tholen spectral type |
spec_T |
DU |
|
n/a |
EAR-A-5-DDR-TAXONOMY-V4.0 |
used 7 color indices |
|
| 588 Achilles (A906 DN) Discovered 1906-Feb-22 by Wolf, M. at Heidelberg |
| Reference: DISCOVERY.DB | Last Updated: 2003-08-29 |
|
|
