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382381 (2013 TU121)
Classification: Main-belt Asteroid          SPK-ID: 2382381
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 11 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2016181845431823 7.9838e-08  
a 2.220114852982142 2.0409e-08 au
q 1.772499326846529 1.8834e-07 au
i .652120286932217 9.0811e-06 deg
node 32.98146975606367 0.00060681 deg
peri 288.343659637828 0.00060818 deg
M 56.74013804299242 2.9157e-05 deg
tp 2458810.063812812208
(2019-Nov-22.56381281)
9.8432e-05 TDB
period 1208.26331680157
3.31
1.6661e-05
4.562e-08
d
yr
n .2979482990123104 4.1085e-09 deg/d
Q 2.667730379117756 2.4524e-08 au
  Orbit Determination Parameters
   # obs. used (total)      85  
   data-arc span      5783 days (15.83 yr)  
   first obs. used      2003-09-28  
   last obs. used      2019-07-29  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .6078  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Sep-24 06:59:31  

Additional Information
 Earth MOID = .759949 au 
 Jupiter MOID = 2.64401 au 
 T_jup = 3.623 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457510.5 (2016-May-02.0) TDB
Reference: JPL 11 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2017910867230763 8.0086e-08  
q 1.7721360237043 1.891e-07 au
tp 2457602.410843824621
(2016-Aug-01.91084382)
0.00010369 TDB
node 33.0132701187319 0.00060596 deg
peri 288.5160977627805 0.00060733 deg
i .6528289327147099 9.0838e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      85  
   data-arc span      5783 days (15.83 yr)  
   first obs. used      2003-09-28  
   last obs. used      2019-07-29  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .6078  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Sep-24 06:59:31  

Additional Information
 Jupiter MOID = 2.64401 au 
 T_jup = 3.623 
Orbit Covariance (6×6)
  e q tp node peri i
e 6.413765937966916E-15 -1.511194583543865E-14 3.504406738095079E-12 -7.881727555143302E-14 1.588968340540636E-12 -1.747440741996088E-15
q -1.511194583543865E-14 3.575878269851838E-14 -8.449739606718647E-12 1.819958692821451E-13 -3.819256470166418E-12 4.262698054062232E-15
tp 3.504406738095079E-12 -8.449739606718647E-12 1.075123198893283E-8 -1.740313915243981E-10 4.251469381294552E-9 2.077326053820492E-12
node -7.881727555143302E-14 1.819958692821451E-13 -1.740313915243981E-10 3.671867440046863E-7 -3.672282370913749E-7 9.172069048554045E-10
peri 1.588968340540636E-12 -3.819256470166418E-12 4.251469381294552E-9 -3.672282370913749E-7 3.688556710655565E-7 -9.165604921740094E-10
i -1.747440741996088E-15 4.262698054062232E-15 2.077326053820492E-12 9.172069048554045E-10 -9.165604921740094E-10 8.25145323666556E-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 18.3   n/a MPO476790  

382381 (2013 TU121)          Discovered 2003-Sep-28 by Spacewatch at Kitt Peak
Reference: Last Updated: 2013-12-19

Alternate Designations
 2013 TU121 = 2003 UN261 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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