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100654 (1997 WM12)
Classification: Main-belt Asteroid          SPK-ID: 2100654
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 17 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1223309683475216 5.727e-08  
a 2.570810395855868 1.3216e-08 au
q 2.256320670692944 1.5209e-07 au
i 2.650067422931017 3.7197e-06 deg
node 248.9681223462663 0.00013364 deg
peri 67.98026289413168 0.00013464 deg
M 239.9689197116135 1.7979e-05 deg
tp 2459502.489591158443
(2021-Oct-14.98959116)
7.6252e-05 TDB
period 1505.57882494143
4.12
1.161e-05
3.179e-08
d
yr
n .2391106955253603 1.8438e-09 deg/d
Q 2.885300121018791 1.4832e-08 au
  Orbit Determination Parameters
   # obs. used (total)      503  
   data-arc span      8229 days (22.53 yr)  
   first obs. used      1997-11-06  
   last obs. used      2020-05-18  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .60436  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-12 20:04:59  

Additional Information
 Earth MOID = 1.24446 au 
 Jupiter MOID = 2.37224 au 
 T_jup = 3.418 
[ 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 MPO422319  

100654 (1997 WM12)          Discovered 1997-Nov-23 by Spacewatch at Kitt Peak
Reference: 20051019/Numbers.arcLast Updated: 2005-10-26

[ show close-approach data ]
Alternate Designations
 1997 WM12 = 2000 KG10 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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