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123478 (2000 WU161)
Classification: Main-belt Asteroid          SPK-ID: 2123478
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 12 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2640100704370096 5.7762e-08  
a 3.131566003508083 2.3674e-08 au
q 2.304801042343769 1.8075e-07 au
i 22.74477765306873 7.5483e-06 deg
node 80.60411797482671 1.7766e-05 deg
peri 92.19521166384779 2.426e-05 deg
M 100.0621207240514 1.3654e-05 deg
tp 2458437.889304895667
(2018-Nov-15.38930490)
7.6262e-05 TDB
period 2024.14109127388
5.54
2.2953e-05
6.284e-08
d
yr
n .1778532146558205 2.0168e-09 deg/d
Q 3.958330964672397 2.9924e-08 au
  Orbit Determination Parameters
   # obs. used (total)      609  
   data-arc span      6746 days (18.47 yr)  
   first obs. used      2000-11-20  
   last obs. used      2019-05-11  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .54642  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-May-30 07:01:02  

Additional Information
 Earth MOID = 1.43854 au 
 Jupiter MOID = 1.73985 au 
 T_jup = 3.042 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 14.0   n/a MPO475082  
diameter diameter 8.213 km 0.581 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.114   0.027 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

123478 (2000 WU161)          Discovered 2000-Nov-20 by LONEOS at Anderson Mesa
Reference: 20060314/Numbers.arcLast Updated: 2006-03-23

[ show close-approach data ]
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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