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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 39 (heliocentric ecliptic J2000)
Element | Value | Uncertainty (1-sigma) | Units |
e | .1517437199511792 | 3.2382e-08 | |
a | 3.19363550854372 | 1.5708e-08 | au |
q | 2.70902137630912 | 1.0114e-07 | au |
i | 2.665064169320991 | 3.5861e-06 | deg |
node | 130.1791370813202 | 8.273e-05 | deg |
peri | 359.3117027644275 | 8.3707e-05 | deg |
M | 188.0202824685494 | 1.2695e-05 | deg |
tp | 2460196.366629722718 (2023-Sep-08.86662972) | 7.3847e-05 | TDB |
period | 2084.617836603993 5.71 | 1.5379e-05 4.211e-08 | d yr |
n | .1726935238098454 | 1.2741e-09 | deg/d |
Q | 3.67824964077832 | 1.8091e-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 |
10.84 |
|
n/a |
E2021B10 |
|
diameter |
diameter |
31.040 |
km |
0.150 |
urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2014ApJ...791..121M) |
|
rotation period |
rot_per |
19.508 |
h |
n/a |
LCDB (Rev. 2020-October); Warner et al., 2009 |
Published Reference List: [Stephens, R.D. (2012) Minor Planet Bull. 39, 80-82.] [Pilcher, F. (2017) Minor Planet Bull. 44, 112-114.] |
geometric albedo |
albedo |
0.119 |
|
0.018 |
urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2012ApJ...759L...8M) |
|
SMASSII spectral type |
spec_B |
B |
|
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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555 Norma (A905 AF) Discovered 1905-Jan-14 by Wolf, M. at Heidelberg |
Reference: DISCOVERY.DB | Last Updated: 2003-08-29 |
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[ show close-approach data ]
Alternate Designations
A905 AF = 1928 FS = 1939 BA = 1950 CC = 1954 UH2 = 1968 HE1 |
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