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90976 (1997 WH38)
Classification: Main-belt Asteroid          SPK-ID: 2090976
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459396.5 (2021-Jul-01.0) TDB
Reference: JPL 26 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1634500676991749 4.4099e-08  
a 2.290469715731244 9.885e-09 au
q 1.916092285632062 1.0215e-07 au
i 4.895450066903021 4.2468e-06 deg
node 246.8474864701177 5.2956e-05 deg
peri 150.4281215709867 5.4538e-05 deg
M 310.9684696565062 1.6202e-05 deg
tp 2459568.948017290420
(2021-Dec-20.44801729)
5.7713e-05 TDB
period 1266.150287164941
3.47
8.1965e-06
2.244e-08
d
yr
n .2843264371136244 1.8406e-09 deg/d
Q 2.664847145830425 1.1501e-08 au
  Orbit Determination Parameters
   # obs. used (total)      726  
   data-arc span      8657 days (23.70 yr)  
   first obs. used      1997-11-26  
   last obs. used      2021-08-09  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .52849  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Aug-25 02:01:20  

Additional Information
 Earth MOID = .924839 au 
 Jupiter MOID = 2.74814 au 
 T_jup = 3.576 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 15.96   n/a MPO637237  

90976 (1997 WH38)          Discovered 1997-Nov-29 by LINEAR at Socorro
Reference: 20041028/Numbers.arcLast Updated: 2004-10-29

Alternate Designations
 1997 WH38 = 2000 QA227 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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