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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 ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 22 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2334966690701095 5.1551e-08  
a 2.618687963405805 2.5824e-08 au
q 2.007233046616561 1.3162e-07 au
i 17.64363731620345 6.322e-06 deg
node 56.63278291467945 1.9539e-05 deg
peri 266.5342121779854 2.5299e-05 deg
M 40.6637621669238 1.3431e-05 deg
tp 2459025.664704966905
(2020-Jun-25.16470497)
5.8099e-05 TDB
period 1547.832833409368
4.24
2.2896e-05
6.269e-08
d
yr
n .2325832559108066 3.4404e-09 deg/d
Q 3.23014288019505 3.1854e-08 au
  Orbit Determination Parameters
   # obs. used (total)      247  
   data-arc span      7231 days (19.80 yr)  
   first obs. used      2001-02-22  
   last obs. used      2020-12-10  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .59512  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-14 14:25:48  

Additional Information
 Earth MOID = 1.08381 au 
 Jupiter MOID = 2.34006 au 
 T_jup = 3.302 
[ 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 16.56   n/a E2021B25  

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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