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123458 (2000 WW138)
Classification: Main-belt Asteroid          SPK-ID: 2123458
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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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.


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Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 18 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .189754168791935 3.8134e-08  
a 2.746155853621456 1.5235e-08 au
q 2.225061332244409 1.0337e-07 au
i 6.899964475465309 4.8909e-06 deg
node 232.8338196225206 4.3109e-05 deg
peri 220.0511158227115 4.6438e-05 deg
M 80.30207448117152 1.6144e-05 deg
tp 2458629.724983604440
(2019-May-26.22498360)
7.3715e-05 TDB
period 1662.211179036211
4.55
1.3832e-05
3.787e-08
d
yr
n .2165789789771095 1.8023e-09 deg/d
Q 3.267250374998502 1.8126e-08 au
  Orbit Determination Parameters
   # obs. used (total)      504  
   data-arc span      7136 days (19.54 yr)  
   first obs. used      2000-11-02  
   last obs. used      2020-05-17  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .56597  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-12 17:35:04  

Additional Information
 Earth MOID = 1.24669 au 
 Jupiter MOID = 1.97434 au 
 T_jup = 3.311 
[ 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 16.0   n/a MPO325333  
diameter diameter 4.288 km 0.102 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.046   0.009 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

123458 (2000 WW138)          Discovered 2000-Nov-21 by LINEAR at Socorro
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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