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437221 (2012 WF25)
Classification: Main-belt Asteroid          SPK-ID: 2437221
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 11 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .08829796049020698 1.2684e-07  
a 3.183491063500309 6.7359e-08 au
q 2.902395295354432 4.037e-07 au
i 17.20535758039435 1.2036e-05 deg
node 84.42649642080802 3.1991e-05 deg
peri 309.9486257530728 6.5847e-05 deg
M 153.363523630575 6.1282e-05 deg
tp 2458116.660398172080
(2017-Dec-29.16039817)
0.00035244 TDB
period 2074.693180788508
5.68
6.5847e-05
1.803e-07
d
yr
n .1735196333287115 5.5072e-09 deg/d
Q 3.464586831646186 7.3306e-08 au
  Orbit Determination Parameters
   # obs. used (total)      87  
   data-arc span      6695 days (18.33 yr)  
   first obs. used      2001-12-20  
   last obs. used      2020-04-19  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .66649  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-May-22 03:40:03  

Additional Information
 Earth MOID = 1.9427 au 
 Jupiter MOID = 1.92577 au 
 T_jup = 3.123 
[ 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 15.7   n/a MPO428068  

437221 (2012 WF25)          Discovered 2009-Apr-17 by Mt. Lemmon Survey at Mount Lemmon
Reference: Last Updated: 2015-06-04

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