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(1998 WW31)
Classification: TransNeptunian Object          SPK-ID: 3031823
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 9 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .09101879259144918 0.00016308  
a 44.47742348550198 0.014211 au
q 40.42914210227303 0.020031 au
i 6.81712171823271 0.00030293 deg
node 237.1375778556559 0.00029258 deg
peri 51.21812990523897 0.12427 deg
M 141.8474991207344 0.13377 deg
tp 2416310.412868287203
(1903-Jul-14.91286829)
20.64 TDB
period 108344.7467363219
296.63
51.928
0.1422
d
yr
n .003322726858886203 1.5925e-06 deg/d
Q 48.52570486873093 0.015505 au
  Orbit Determination Parameters
   # obs. used (total)      38  
   data-arc span      7647 days (20.94 yr)  
   first obs. used      1998-11-18  
   last obs. used      2019-10-26  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      4  
   norm. resid. RMS      .34489  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-21 21:32:43  

Additional Information
 Earth MOID = 39.4172 au 
 Jupiter MOID = 35.2636 au 
 T_jup = 5.899 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 6.7   n/a MPO230178  
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters ]
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