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(2018 VG18)
Classification: TransNeptunian Object          SPK-ID: 3836918
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 7 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .5340916259402247 0.003143  
a 81.42067717174179 0.34548 au
q 37.93457531593208 0.10254 au
i 24.36022666926331 0.012319 deg
node 245.3468567037625 0.0045281 deg
peri 16.8755232091778 2.1359 deg
M 158.0390661408345 5.9605 deg
tp 2341395.846572330236
(1698-Jun-03.34657233)
3696.7 TDB
period 268349.3155810492
734.70
1708
4.676
d
yr
n .001341535003435735 8.5386e-06 deg/d
Q 124.9067790275515 0.53 au
  Orbit Determination Parameters
   # obs. used (total)      28  
   data-arc span      1095 days (3.00 yr)  
   first obs. used      2017-01-16  
   last obs. used      2020-01-16  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      7  
   norm. resid. RMS      .25956  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-15 20:48:43  

Additional Information
 Earth MOID = 36.9249 au 
 Jupiter MOID = 32.6651 au 
 T_jup = 6.157 
[ hide covariance matrix ]
Orbital Elements at Epoch 2458573.5 (2019-Mar-31.0) TDB
Reference: JPL 7 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .536135697903673 0.0030183  
q 37.68622635084695 0.099038 au
tp 2341159.017383336904
(1697-Oct-09.51738334)
3702.6 TDB
node 245.3799947320164 0.0045149 deg
peri 16.50696349446212 2.1241 deg
i 24.44875317430479 0.012368 deg
  Orbit Determination Parameters
   # obs. used (total)      28  
   data-arc span      1095 days (3.00 yr)  
   first obs. used      2017-01-16  
   last obs. used      2020-01-16  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      7  
   norm. resid. RMS      .25956  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-15 20:48:43  

Additional Information
 Jupiter MOID = 32.6651 au 
 T_jup = 6.157 
Orbit Covariance (6×6)
  e q tp node peri i
e 9.109925286282439E-6 -.0002845466686368581 11.12760703378831 5.45490161245019E-6 .006370977543293492 1.4951912161956E-5
q -.0002845466686368581 .009808445328748975 -337.3434421212465 -.0001730355888419619 -.1918444306296269 -.0004723019615666125
tp 11.12760703378831 -337.3434421212465 13709113.10503148 6.643411895726531 7863.11701619019 18.22976068977159
node 5.45490161245019E-6 -.0001730355888419619 6.643411895726531 2.038443325905158E-5 .003783503041341739 5.582784102844117E-5
peri .006370977543293492 -.1918444306296269 7863.11701619019 .003783503041341739 4.51188853796658 .01038512663012982
i 1.4951912161956E-5 -.0004723019615666125 18.22976068977159 5.582784102844117E-5 .01038512663012982 .0001529563928055792

Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 3.5   .52371 MPO546158 autocmod 2.8
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters ]
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