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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 2459000.5 (2020-May-31.0) TDB
Reference: JPL 25 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1612138666583961 5.1493e-08  
a 2.759312258585466 1.7183e-08 au
q 2.314472860060991 1.4073e-07 au
i 7.894802415548612 4.8445e-06 deg
node 257.3067543335695 3.7681e-05 deg
peri 115.6331984562566 4.0976e-05 deg
M 163.0602714700649 1.9866e-05 deg
tp 2458242.192480300500
(2018-May-03.69248030)
8.8435e-05 TDB
period 1674.170566690959
4.58
1.5638e-05
4.281e-08
d
yr
n .2150318534816612 2.0085e-09 deg/d
Q 3.204151657109941 1.9953e-08 au
  Orbit Determination Parameters
   # obs. used (total)      847  
   data-arc span      8921 days (24.42 yr)  
   first obs. used      1995-11-21  
   last obs. used      2020-04-24  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .54639  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-May-20 16:35:28  

Additional Information
 Earth MOID = 1.32882 au 
 Jupiter MOID = 2.32861 au 
 T_jup = 3.309 
[ 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 14.7   n/a MPO468893  

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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