3554 Amun (1986 EB) |
Classification: Aten [NEO] SPK-ID: 2003554 |
[ 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 260 (heliocentric ecliptic J2000)
Element | Value | Uncertainty (1-sigma) | Units |
e | .280576760744493 | 7.6611e-08 | |
a | .9739454856228307 | 2.6402e-09 | au |
q | .7006790161250547 | 7.5843e-08 | au |
i | 23.35695516099013 | 1.0335e-05 | deg |
node | 358.6102876226886 | 7.37e-06 | deg |
peri | 359.4009549855169 | 1.7155e-05 | deg |
M | 26.0368830535026 | 2.5155e-05 | deg |
tp | 2458975.108585689241 (2020-May-05.60858569) | 2.4531e-05 | TDB |
period | 351.0754007340228 0.96 | 1.4275e-06 3.908e-09 | d yr |
n | 1.025420747928558 | 4.1696e-09 | deg/d |
Q | 1.247211955120607 | 3.3809e-09 | au |
|
| | Orbit Determination Parameters
Additional Information
|
[ show covariance matrix ]
Physical Parameter Table
Parameter |
Symbol |
Value |
Units |
Sigma |
Reference |
Notes |
absolute magnitude |
H |
15.82 |
|
n/a |
MPO263378 |
|
diameter |
diameter |
3.341 |
km |
0.021 |
urn:nasa:pds:neowise_diameters_albedos::2.0[neos] (http://adsabs.harvard.edu/abs/2011ApJ...743..156M) |
|
rotation period |
rot_per |
2.53001 |
h |
n/a |
LCDB (Rev. 2020-October); Warner et al., 2009 |
Published Reference List: [Wisniewski, W.Z.; Michalowski, T.M.; Harris, A.W.; McMillan, R.S. (1997) Icarus 126, 395-449; 1995, Lunar & Planetary Sci. XXVI, 1511-1512.] [Behrend, R. (2009) Observatoire de Geneve web site, http://obswww.unige.ch/~behrend/page_cou.html] [Behrend, R. (2010) Observatoire de Geneve web site, http://obswww.unige.ch/~behrend/page_cou.html] [Skiff, B.A. (2011) Posting on CALL web site. http://www.minorplanet.info/call.html] [Koehn, B.W.; Bowell, E.L.G.; Skiff, B.A.; Sanborn, J.J.; et al. (2014) Minor Planet Bull. 41, 286-300.] [Skiff, B.A.; McLelland, K.P.; Sanborn, J.; Pravec, P.; Koehn, B.W. (2019). Minor Planet Bull. 46, 458-503.] |
geometric albedo |
albedo |
0.074 |
|
0.015 |
urn:nasa:pds:neowise_diameters_albedos::2.0[neos] (http://adsabs.harvard.edu/abs/2011ApJ...743..156M) |
|
B-V |
BV |
0.707 |
|
0.021 |
EAR-A-5-DDR-UBV-MEAN-VALUES-V1.2 |
#obs=2; phase (min.=21.02, mean=29.90, max.=38.78) deg. |
U-B |
UB |
0.235 |
|
0.054 |
EAR-A-5-DDR-UBV-MEAN-VALUES-V1.2 |
#obs=2; phase (min.=21.02, mean=29.90, max.=38.78) deg. |
|
3554 Amun (1986 EB) Discovered 1986-Mar-04 by Shoemaker, C. and Shoemaker, E. at Palomar |
Reference: DISCOVERY.DB | Last Updated: 2003-08-29 |
|
[ show close-approach data ]
|