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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 110 (heliocentric ecliptic J2000)
Element | Value | Uncertainty (1-sigma) | Units |
e | .1547417218413425 | 3.5152e-08 | |
a | 2.73864013188233 | 5.895e-09 | au |
q | 2.314858242371057 | 9.5807e-08 | au |
i | 6.971279645845406 | 3.7986e-06 | deg |
node | 295.7222356245596 | 3.151e-05 | deg |
peri | 169.24078422 | 3.3674e-05 | deg |
M | 91.97851686519239 | 1.2292e-05 | deg |
tp | 2458577.554137809925 (2019-Apr-04.05413781) | 5.6188e-05 | TDB |
period | 1655.392102175189 4.53 | 5.3449e-06 1.463e-08 | d yr |
n | .217471135404693 | 7.0217e-10 | deg/d |
Q | 3.162422021393603 | 6.8072e-09 | 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 |
8.5 |
|
n/a |
MPO502153 |
IRAS observations used: 25 |
diameter |
diameter |
92.255 |
km |
0.490 |
urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2014ApJ...791..121M) |
|
rotation period |
rot_per |
12.838 |
h |
n/a |
LCDB (Rev. 2020-October); Warner et al., 2009 |
Published Reference List: [De Young, J.A.; Schmidt, R.E. (1996) Minor Planet Bull. 23, 44.] [Pilcher, F. (2009) Minor Planet Bull. 36, 25-27.] [Pilcher, F. (2010) Minor Planet Bull. 37, 119-122.] [Pilcher, F. (2011) Minor Planet Bull. 38, 183-185.] [Franco, L.; Pilcher, F.; Durech, J. (2013) Minor Planet Bull. 40, 229-231.] [Pilcher, F. (2013) Minor Planet Bull. 40, 33.] |
geometric albedo |
albedo |
0.055 |
|
0.007 |
urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2012ApJ...759L...8M) |
|
B-V |
BV |
0.726 |
|
0.021 |
EAR-A-5-DDR-UBV-MEAN-VALUES-V1.2 |
#obs=4; phase (min.=4.56, mean=11.52, max.=18.34) deg. |
U-B |
UB |
0.419 |
|
0.030 |
EAR-A-5-DDR-UBV-MEAN-VALUES-V1.2 |
#obs=4; phase (min.=4.56, mean=11.52, max.=18.34) deg. |
Tholen spectral type |
spec_T |
C |
|
n/a |
EAR-A-5-DDR-TAXONOMY-V4.0 |
used 7 color indices; used ground-based radiometric albedo |
SMASSII spectral type |
spec_B |
Cgh |
|
n/a |
EAR-A-5-DDR-TAXONOMY-V4.0 |
based on a high-resolution spectrum by Xu et al. (1995) or Bus and Binzel (2002) |
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38 Leda (A856 AA) Discovered 1856-Jan-12 by Chacornac, J. at Paris |
Reference: DISCOVERY.DB | Last Updated: 2003-08-29 |
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[ show close-approach data ]
Alternate Designations
A856 AA = 1949 QO2 = A904 SF |
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