[ 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.
[ revert to old Java-based viewer ]
Orbital Elements at Epoch 2458600.5 (2019-Apr-27.0) TDB
Reference: JPL 35 (heliocentric ecliptic J2000)
Element | Value | Uncertainty (1-sigma) | Units |
e | .2701452410651169 | 4.1527e-08 | |
a | 3.169914948171462 | 1.3535e-08 | au |
q | 2.313577510341765 | 1.3438e-07 | au |
i | 16.86623795461373 | 4.492e-06 | deg |
node | 58.89339294504821 | 1.4769e-05 | deg |
peri | 302.1650578655892 | 1.6064e-05 | deg |
M | 31.93524446128868 | 7.8211e-06 | deg |
tp | 2458417.632054422869 (2018-Oct-26.13205442) | 4.4378e-05 | TDB |
period | 2061.435931313072 5.64 | 1.3203e-05 3.615e-08 | d yr |
n | .1746355511377407 | 1.1185e-09 | deg/d |
Q | 4.026252386001159 | 1.7192e-08 | au |
|
| | Orbit Determination Parameters
Additional Information
|
[ 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. 2019-January); Warner et al., 2009 |
Published Reference List: [Warner, B.D. (2003) Minor Planet Bull. 30, 61-64.] |
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) |
|
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 |
|
[ show close-approach data ]
Alternate Designations
A917 WA = 1945 WA = 1952 BN = A910 LA = A916 NA = A917 UD |
|
|