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100668 (1997 WH44)
Classification: Main-belt Asteroid          SPK-ID: 2100668
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 22 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1802991848387913 3.3356e-08  
a 2.3265291822209 9.3465e-09 au
q 1.907057867162812 7.6063e-08 au
i 5.156587013535856 3.4246e-06 deg
node 83.92878456547717 4.4574e-05 deg
peri 34.24353831421915 4.6107e-05 deg
M 90.08800505844248 1.1698e-05 deg
tp 2458676.141224296062
(2019-Jul-11.64122430)
4.1303e-05 TDB
period 1296.167666024646
3.55
7.8108e-06
2.138e-08
d
yr
n .2777418457784264 1.6737e-09 deg/d
Q 2.746000497278988 1.1032e-08 au
  Orbit Determination Parameters
   # obs. used (total)      671  
   data-arc span      8264 days (22.63 yr)  
   first obs. used      1997-11-29  
   last obs. used      2020-07-15  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .55818  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-12 20:04:54  

Additional Information
 Earth MOID = .92585 au 
 Jupiter MOID = 2.35049 au 
 T_jup = 3.547 
[ 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 16.4   n/a MPO453461  

100668 (1997 WH44)          Discovered 1997-Nov-29 by LINEAR at Socorro
Reference: 20051019/Numbers.arcLast Updated: 2005-10-26

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Alternate Designations
 1997 WH44 = 2002 EX105 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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