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379978 (2012 TH52)
Classification: Jupiter Trojan          SPK-ID: 2379978
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | 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 14 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .05371110611785502 8.1059e-08  
a 5.289108346239159 2.3056e-07 au
q 5.005024486585475 5.9131e-07 au
i 3.410264697146997 6.0385e-06 deg
node 288.6365465676787 0.0001338 deg
peri 349.2440488299496 0.00015973 deg
M 312.9678595880121 8.6766e-05 deg
tp 2459580.949398058600
(2022-Jan-01.44939806)
0.00106 TDB
period 4442.957124014593
12.16
0.00029051
7.954e-07
d
yr
n .08102711548895369 5.2981e-09 deg/d
Q 5.573192205892843 2.4294e-07 au
  Orbit Determination Parameters
   # obs. used (total)      171  
   data-arc span      6353 days (17.39 yr)  
   first obs. used      2002-12-06  
   last obs. used      2020-04-28  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .59229  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-May-22 00:31:40  

Additional Information
 Earth MOID = 3.98866 au 
 Jupiter MOID = .138381 au 
 T_jup = 2.994 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457612.5 (2016-Aug-12.0) TDB
Reference: JPL 14 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .05209829097605256 8.1049e-08  
q 5.015487005427304 5.9221e-07 au
tp 2459583.657268476980
(2022-Jan-04.15726848)
0.001093 TDB
node 288.6247044402981 0.00013381 deg
peri 349.2094091112847 0.00016118 deg
i 3.409583603851329 6.0377e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      171  
   data-arc span      6353 days (17.39 yr)  
   first obs. used      2002-12-06  
   last obs. used      2020-04-28  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .59229  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-May-22 00:31:40  

Additional Information
 Jupiter MOID = .138381 au 
 T_jup = 2.994 
Orbit Covariance (6×6)
  e q tp node peri i
e 6.568941544400722E-15 -4.595218698991318E-14 -9.542481875468035E-12 -2.571438591426917E-14 2.505406395507539E-15 -1.961410149536424E-15
q -4.595218698991318E-14 3.507107628501948E-13 -1.43928624625205E-11 2.307546973580283E-13 -7.817531452715981E-12 1.535924544386147E-14
tp -9.542481875468035E-12 -1.43928624625205E-11 1.194575402854127E-6 -1.151348723314957E-10 9.758019588931427E-8 1.59077286590351E-11
node -2.571438591426917E-14 2.307546973580283E-13 -1.151348723314957E-10 1.790527224666098E-8 -1.78874303821792E-8 -6.173859092907599E-11
peri 2.505406395507539E-15 -7.817531452715981E-12 9.758019588931427E-8 -1.78874303821792E-8 2.597991973328464E-8 6.259749572454368E-11
i -1.961410149536424E-15 1.535924544386147E-14 1.59077286590351E-11 -6.173859092907599E-11 6.259749572454368E-11 3.645426447749737E-11

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

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 13.9   n/a MPO437556  

379978 (2012 TH52)          Discovered 2005-Feb-04 by Spacewatch at Kitt Peak
Reference: Last Updated: 2013-11-20

Alternate Designations
 2012 TH52 = 2005 EA325 = 2007 EV154 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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