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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 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 44 (heliocentric ecliptic J2000)
Element | Value | Uncertainty (1-sigma) | Units |
e | .03081716803981653 | 1.7666e-08 | |
a | 3.134082790185361 | 1.2608e-08 | au |
q | 3.037499234189522 | 5.2357e-08 | au |
i | 7.071800910646573 | 4.0459e-07 | deg |
node | 287.9778788739351 | 5.3397e-06 | deg |
peri | 240.4960398174645 | 2.1928e-05 | deg |
M | 35.51379781346215 | 2.0632e-05 | deg |
tp | 2459000.578850180840 (2020-May-31.07885018) | 0.00011604 | TDB |
period | 2026.581733469676 5.55 | 1.2229e-05 3.348e-08 | d yr |
n | .1776390234129122 | 1.0719e-09 | deg/d |
Q | 3.2306663461812 | 1.2996e-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 |
10.63 |
|
n/a |
E2021B10 |
|
diameter |
diameter |
51.540 |
km |
0.112 |
urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2014ApJ...791..121M) |
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rotation period |
rot_per |
12.287 |
h |
n/a |
LCDB (Rev. 2020-October); Warner et al., 2009 |
Published Reference List: [Brinsfield, J.W. (2009) Minor Planet Bull. 36, 127-128.] [Chang, C.K.; Ip, W.-H.; Lin, H.-W.; Cheng, Y.C.; et al. (2015) Astrophys. J. Supp. Ser. 219, A27.] [Waszczak, A.; Chang, C.-K.; Ofeck, E.O.; Laher, F.; et al. (2015) Astron. J. 150, A75.] |
geometric albedo |
albedo |
0.032 |
|
0.011 |
urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2014ApJ...791..121M) |
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1254 Erfordia (1932 JA) Discovered 1932-May-10 by Hartmann, J. at La Plata |
Reference: DISCOVERY.DB | Last Updated: 2003-08-29 |
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Alternate Designations
1932 JA = 1931 BE = 1971 KG = 1974 XR |
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