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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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Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 17 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1224446839670794 5.728e-08  
a 2.570558129049211 1.3169e-08 au
q 2.255806951318773 1.5213e-07 au
i 2.650164492934997 3.7199e-06 deg
node 248.9651982803965 0.00013363 deg
peri 68.02465184004991 0.00013464 deg
M 287.7629459625579 1.806e-05 deg
tp 2459502.562697336772
(2021-Oct-15.06269734)
7.6177e-05 TDB
period 1505.357222691753
4.12
1.1568e-05
3.167e-08
d
yr
n .2391458947905257 1.8377e-09 deg/d
Q 2.885309306779648 1.4781e-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 = 1.24197 au 
 Jupiter MOID = 2.37189 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 16.11   n/a E2021B55  

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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