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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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Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 21 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1802991901549952 3.7047e-08  
a 2.326529181397678 9.6389e-09 au
q 1.907057854119713 8.5678e-08 au
i 5.156585829514889 3.6077e-06 deg
node 83.92875902711395 5.0777e-05 deg
peri 34.24356534782783 5.2279e-05 deg
M 90.0880041749605 1.2101e-05 deg
tp 2458676.141227649165
(2019-Jul-11.64122765)
4.2913e-05 TDB
period 1296.167665336689
3.55
8.0551e-06
2.205e-08
d
yr
n .2777418459258412 1.726e-09 deg/d
Q 2.746000508675643 1.1377e-08 au
  Orbit Determination Parameters
   # obs. used (total)      605  
   data-arc span      8185 days (22.41 yr)  
   first obs. used      1997-11-29  
   last obs. used      2020-04-27  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .56306  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-May-20 17:54:51  

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

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