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100658 (1997 WH20)
Classification: Main-belt Asteroid          SPK-ID: 2100658
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 18 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .152894482236564 5.0529e-08  
a 2.788234106447395 1.4328e-08 au
q 2.361928496387792 1.4094e-07 au
i 3.496825366543922 5.6958e-06 deg
node 204.9390882434446 5.8862e-05 deg
peri 355.4704642252 5.9983e-05 deg
M 207.7277491218101 1.3375e-05 deg
tp 2459919.800805359286
(2022-Dec-06.30080536)
6.5711e-05 TDB
period 1700.561254174201
4.66
1.3108e-05
3.589e-08
d
yr
n .2116948149420336 1.6317e-09 deg/d
Q 3.214539716506997 1.6518e-08 au
  Orbit Determination Parameters
   # obs. used (total)      535  
   data-arc span      8395 days (22.98 yr)  
   first obs. used      1997-11-23  
   last obs. used      2020-11-17  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .54698  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Feb-24 08:25:53  

Additional Information
 Earth MOID = 1.35851 au 
 Jupiter MOID = 1.74432 au 
 T_jup = 3.310 
[ 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 15.7   n/a MPO436469  

100658 (1997 WH20)          Discovered 1997-Nov-25 by Spacewatch at Kitt Peak
Reference: 20051019/Numbers.arcLast Updated: 2005-10-26

[ show close-approach data ]
Alternate Designations
 1997 WH20 = 1999 CD114 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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