[ 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 43 (heliocentric ecliptic J2000)
Element | Value | Uncertainty (1-sigma) | Units |
e | .1104234558003196 | 3.4714e-08 | |
a | 3.1196920212297 | 1.3713e-08 | au |
q | 2.775204847212832 | 1.0508e-07 | au |
i | 12.73270349222695 | 4.0031e-06 | deg |
node | 190.6098126674255 | 1.7782e-05 | deg |
peri | 116.3312827305293 | 2.5994e-05 | deg |
M | 150.2029364760269 | 1.92e-05 | deg |
tp | 2458160.765623081134 (2018-Feb-11.26562308) | 0.00010632 | TDB |
period | 2012.639584706395 5.51 | 1.327e-05 3.633e-08 | d yr |
n | .1788695813873287 | 1.1794e-09 | deg/d |
Q | 3.464179195246567 | 1.5227e-08 | au |
|
| | Orbit Determination Parameters
Additional Information
|
[ show covariance matrix ]
Physical Parameter Table
Parameter |
Symbol |
Value |
Units |
Sigma |
Reference |
Notes |
absolute magnitude |
H |
9.7 |
|
n/a |
MPO502161 |
|
diameter |
diameter |
28.309 |
km |
1.544 |
urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2012ApJ...759L...8M) |
|
rotation period |
rot_per |
4.6897 |
h |
n/a |
LCDB (Rev. 2020-October); Warner et al., 2009 |
Published Reference List: [Behrend, R. (2001) Observatoire de Geneve web site, http://obswww.unige.ch/~behrend/page_cou.html] [Stephens, R.D. (2002) Minor Planet Bull. 29, 2-3.] [Higgins, D.; Goncalves, R.M.D. (2007) Minor Planet Bull. 34, 16-18.] |
geometric albedo |
albedo |
0.120 |
|
0.007 |
urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M) |
|
|
894 Erda (A918 LA) Discovered 1918-Jun-04 by Wolf, M. at Heidelberg |
Reference: DISCOVERY.DB | Last Updated: 2003-08-29 |
|
[ show close-approach data ]
Alternate Designations
A918 LA = 1973 QB = A907 JC = A912 HD |
|
|