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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 42 (heliocentric ecliptic J2000)
Element | Value | Uncertainty (1-sigma) | Units |
e | .2704085670362982 | 3.7465e-08 | |
a | 3.17013617586426 | 1.2746e-08 | au |
q | 2.312904195238875 | 1.2013e-07 | au |
i | 16.86413254891921 | 4.1173e-06 | deg |
node | 58.88651170682658 | 1.404e-05 | deg |
peri | 302.1629281844198 | 1.5375e-05 | deg |
M | 101.7637079068855 | 7.9943e-06 | deg |
tp | 2458417.718541521882 (2018-Oct-26.21854152) | 4.4421e-05 | TDB |
period | 2061.651735843706 5.64 | 1.2433e-05 3.404e-08 | d yr |
n | .1746172710652676 | 1.0531e-09 | deg/d |
Q | 4.027368156489645 | 1.6192e-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 |
9.3 |
|
n/a |
MPO236394 |
|
diameter |
diameter |
86.793 |
km |
0.857 |
urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2014ApJ...791..121M) |
|
rotation period |
rot_per |
9.001 |
h |
n/a |
LCDB (Rev. 2020-October); Warner et al., 2009 |
Published Reference List: [Warner, B.D. (2003) Minor Planet Bull. 30, 61-64.] [Pal, A.; Szakats, R.; Kiss, C.; Bodi, A.; et al. (2019) Ap. J. Supl. Ser. 247, id.26.] |
geometric albedo |
albedo |
0.078 |
|
0.015 |
urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2014ApJ...791..121M) |
|
SMASSII spectral type |
spec_B |
C |
|
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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886 Washingtonia (A917 WA) Discovered 1917-Nov-16 by Peters, G. H. at Washington |
Independent discovery Nov. 12 by M. Harwood, Nantucket. |
Reference: DISCOVERY.DB | Last Updated: 2003-08-29 |
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Alternate Designations
A917 WA = 1945 WA = 1952 BN = A910 LA = A916 NA = A917 UD |
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