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437218 (2012 WJ23)
Classification: Main-belt Asteroid          SPK-ID: 2437218
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

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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 .2337294996396345 5.2252e-08  
a 2.619432722578818 3.303e-08 au
q 2.007194022990785 1.3299e-07 au
i 17.64334306197 8.2427e-06 deg
node 56.63816825103326 2.0345e-05 deg
peri 266.5301933711037 2.7741e-05 deg
M 354.1472890669149 1.9898e-05 deg
tp 2459025.674675058287
(2020-Jun-25.17467506)
8.5766e-05 TDB
period 1548.493189668935
4.24
2.9289e-05
8.019e-08
d
yr
n .2324840705802312 4.3973e-09 deg/d
Q 3.231671422166851 4.075e-08 au
  Orbit Determination Parameters
   # obs. used (total)      166  
   data-arc span      7097 days (19.43 yr)  
   first obs. used      2001-02-22  
   last obs. used      2020-07-29  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .60547  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Aug-26 00:39:43  

Additional Information
 Earth MOID = 1.08543 au 
 Jupiter MOID = 2.33962 au 
 T_jup = 3.301 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 16.5   n/a MPO437695  

437218 (2012 WJ23)          Discovered 2012-Nov-07 by Mt. Lemmon Survey at Mount Lemmon
Reference: Last Updated: 2015-06-04

Alternate Designations
 2012 WJ23 = 2015 FR295 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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