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100649 (1997 WF4)
Classification: Main-belt Asteroid          SPK-ID: 2100649
[ 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 14 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .08259960625257139 3.8732e-08  
a 2.648338350375182 1.8535e-08 au
q 2.429586645410608 1.0194e-07 au
i 2.129753296141879 5.1789e-06 deg
node 221.5983558139828 0.00014866 deg
peri 218.2236441976138 0.00015499 deg
M 51.37547630933221 4.3775e-05 deg
tp 2458775.847119367378
(2019-Oct-19.34711937)		 0.0001906 TDB
period 1574.195371752754
4.31		 1.6526e-05
4.525e-08		 d
yr
n .2286882597038548 2.4007e-09 deg/d
Q 2.867090055339756 2.0065e-08 au
   Orbit Determination Parameters
   # obs. used (total)      274  
   data-arc span      8109 days (22.20 yr)  
   first obs. used      1997-10-23  
   last obs. used      2020-01-05  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .5586  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Jan-29 14:57:57  

Additional Information
 Earth MOID = 1.44561 au 
 Jupiter MOID = 2.30869 au 
 T_jup = 3.386 
[ 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 16.6   n/a MPO412741  

100649 (1997 WF4)          Discovered 1997-Nov-20 by Spacewatch at Kitt Peak
Reference: 20051019/Numbers.arcLast Updated: 2005-10-26

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Alternate Designations
 1997 WF4 = 2003 BZ32 
[ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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