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90838 (1995 WD7)
Classification: Main-belt Asteroid          SPK-ID: 2090838
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 29 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1615820554575634 4.5726e-08  
a 2.758593486971682 1.6226e-08 au
q 2.312854281174951 1.2666e-07 au
i 7.895537433121325 4.8071e-06 deg
node 257.2998176570978 3.3454e-05 deg
peri 115.6211626019353 3.7133e-05 deg
M 248.2716039229923 2.0037e-05 deg
tp 2459915.886969959760
(2022-Dec-02.38696996)
9.5996e-05 TDB
period 1673.516453745922
4.58
1.4765e-05
4.042e-08
d
yr
n .2151159011279469 1.8979e-09 deg/d
Q 3.204332692768414 1.8848e-08 au
  Orbit Determination Parameters
   # obs. used (total)      915  
   data-arc span      9353 days (25.61 yr)  
   first obs. used      1995-11-21  
   last obs. used      2021-06-30  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .53597  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Aug-25 18:16:47  

Additional Information
 Earth MOID = 1.32644 au 
 Jupiter MOID = 2.33074 au 
 T_jup = 3.310 
[ 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 14.69   n/a MPO637235  

90838 (1995 WD7)          Discovered 1995-Nov-21 by Okuni, T. at Nanyo
Reference: 20041028/Numbers.arcLast Updated: 2004-10-29

Alternate Designations
 1995 WD7 = 1999 RG198 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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