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508338 (2015 SO20)
Classification: TransNeptunian Object          SPK-ID: 2508338
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ]

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For accurate long-term ephemerides, please instead use our Horizons system.This orbit viewer was implemented using two-body methods, and hence should not be used for determining accurate long-term trajectories (over several years or decades) or planetary encounter circumstances.


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Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 22 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .8000217162647806 2.404e-05  
a 165.8259958373825 0.020652 au
q 33.16159804624338 0.00014466 au
i 23.41614788308904 3.432e-05 deg
node 33.61990172990936 1.895e-05 deg
peri 354.5810313565987 0.00055221 deg
M .4790269107279561 9.847e-05 deg
tp 2457962.649595232159
(2017-Jul-28.14959523)
0.080108 TDB
period 779969.0108195374
2135.44
145.71
0.3989
d
yr
n .0004615567990601792 8.6224e-08 deg/d
Q 298.4903936285215 0.037174 au
  Orbit Determination Parameters
   # obs. used (total)      298  
   data-arc span      4023 days (11.01 yr)  
   first obs. used      2009-09-21  
   last obs. used      2020-09-26  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      1  
   norm. resid. RMS      .462  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-12 00:25:26  

Additional Information
 Earth MOID = 32.1676 au 
 Jupiter MOID = 28.1982 au 
 T_jup = 6.247 
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Orbital Elements at Epoch 2457257.5 (2015-Aug-23.0) TDB
Reference: JPL 22 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .796903390073111 2.4014e-05  
q 33.16250115731673 0.00014471 au
tp 2458020.583362189973
(2017-Sep-24.08336219)
0.08032 TDB
node 33.62505544257056 1.894e-05 deg
peri 354.9861808176016 0.0005534 deg
i 23.43500082456816 3.4352e-05 deg
  Orbit Determination Parameters
   # obs. used (total)      298  
   data-arc span      4023 days (11.01 yr)  
   first obs. used      2009-09-21  
   last obs. used      2020-09-26  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      1  
   norm. resid. RMS      .462  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-12 00:25:26  

Additional Information
 Jupiter MOID = 28.1982 au 
 T_jup = 6.247 
Orbit Covariance (6×6)
  e q tp node peri i
e 5.766681012726945E-10 3.444229238208114E-9 7.480989168852965E-8 -8.712939247180122E-12 5.257691447465367E-10 7.797528805035677E-11
q 3.444229238208114E-9 2.094095944078106E-8 -6.524089773250212E-7 -4.994535288257409E-11 -4.470651098491091E-9 4.603971260924813E-10
tp 7.480989168852965E-8 -6.524089773250212E-7 .006451328924120957 -1.582941348292819E-8 4.442518882258466E-5 6.319537243024071E-8
node -8.712939247180122E-12 -4.994535288257409E-11 -1.582941348292819E-8 3.587347099079658E-10 -4.380510465827916E-10 -5.207978945409345E-10
peri 5.257691447465367E-10 -4.470651098491091E-9 4.442518882258466E-5 -4.380510465827916E-10 3.062518868783755E-7 9.123812501087852E-10
i 7.797528805035677E-11 4.603971260924813E-10 6.319537243024071E-8 -5.207978945409345E-10 9.123812501087852E-10 1.180080230994371E-9

Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 6.5   n/a MPO386929  

508338 (2015 SO20)          Discovered 2010-Oct-08 by Schwamb, M. E. at La Silla
Reference: Last Updated: 2017-12-07

Alternate Designations
 2015 SO20 = 2010 TF182 
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ]
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