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(2018 AD39)
Classification: TransNeptunian Object          SPK-ID: 54117573
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 2 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .7659893400450746 0.012285  
a 164.0392975381866 7.4654 au
q 38.38694427545343 0.27127 au
i 19.84993951079392 0.00731 deg
node 329.9433163228363 0.014145 deg
peri 48.83670839074782 0.13633 deg
M 14.48469687558192 1.1273 deg
tp 2428324.062325722978
(1936-Jun-04.56232572)
295.5 TDB
period 767397.3199589768
2101.02
52387
143.4
d
yr
n .0004691181355953195 3.2024e-05 deg/d
Q 289.6916508009198 13.184 au
  Orbit Determination Parameters
   # obs. used (total)      13  
   data-arc span      1067 days (2.92 yr)  
   first obs. used      2018-01-15  
   last obs. used      2020-12-17  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      6  
   norm. resid. RMS      .11265  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-15 20:20:01  

Additional Information
 Earth MOID = 37.4215 au 
 Jupiter MOID = 33.6516 au 
 T_jup = 6.822 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 6.24   .12349 E2021-CQ9 autocmod 2.8
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters ]
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