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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 | Close-Approach Data ]

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Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 23 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1638151231745188 4.4632e-08  
a 2.290087455638328 1.0034e-08 au
q 1.914936497012515 1.0351e-07 au
i 4.897545101202656 4.3178e-06 deg
node 246.8849733278287 5.3284e-05 deg
peri 150.4818846533421 5.4935e-05 deg
M 255.1845574769512 1.6595e-05 deg
tp 2459569.052447885531
(2021-Dec-20.55244789)
5.9984e-05 TDB
period 1265.83333567108
3.47
8.3192e-06
2.278e-08
d
yr
n .2843976294945229 1.8691e-09 deg/d
Q 2.665238414264141 1.1677e-08 au
  Orbit Determination Parameters
   # obs. used (total)      676  
   data-arc span      8267 days (22.63 yr)  
   first obs. used      1997-11-26  
   last obs. used      2020-07-15  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .54213  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-12 20:41:41  

Additional Information
 Earth MOID = .923284 au 
 Jupiter MOID = 2.74655 au 
 T_jup = 3.576 
[ 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 15.94   n/a E2021B10  

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

[ show close-approach data ]
Alternate Designations
 1997 WH38 = 2000 QA227 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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