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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 2459396.5 (2021-Jul-01.0) TDB
Reference: JPL 10 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .08940710197516764 0.00015836  
a 44.59332722789095 0.014302 au
q 40.60636707301488 0.019931 au
i 6.804574581346989 0.0003023 deg
node 237.0999824558976 0.00029273 deg
peri 52.81062062952667 0.1294 deg
M 141.4721617063715 0.13946 deg
tp 2416652.837514440253
(1904-Jun-21.33751444)
22.305 TDB
period 108768.5259714844
297.79
52.328
0.1433
d
yr
n .003309780993946543 1.5923e-06 deg/d
Q 48.58028738276701 0.015581 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.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      4  
   norm. resid. RMS      .34498  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-14 20:49:19  

Additional Information
 Earth MOID = 39.5944 au 
 Jupiter MOID = 35.4481 au 
 T_jup = 5.907 
[ 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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