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382278 (2012 TL221)
Classification: Main-belt Asteroid          SPK-ID: 2382278
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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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 16 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .04117110673499374 6.359e-08  
a 3.083602335729609 4.953e-08 au
q 2.956647014837009 2.01e-07 au
i 11.71531641936746 1.0602e-05 deg
node 15.95454744979935 3.0526e-05 deg
peri 103.1670802628788 0.00017393 deg
M 46.02749554648834 0.00016274 deg
tp 2458747.627955610811
(2019-Sep-21.12795561)
0.00089583 TDB
period 1977.816409501632
5.41
4.7653e-05
1.305e-07
d
yr
n .1820189165538941 4.3855e-09 deg/d
Q 3.210557656622209 5.1569e-08 au
  Orbit Determination Parameters
   # obs. used (total)      183  
   data-arc span      5919 days (16.21 yr)  
   first obs. used      2004-02-13  
   last obs. used      2020-04-28  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .57879  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-May-22 00:41:55  

Additional Information
 Earth MOID = 1.99847 au 
 Jupiter MOID = 1.82341 au 
 T_jup = 3.194 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457312.5 (2015-Oct-17.0) TDB
Reference: JPL 16 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .04233801406373008 6.4392e-08  
q 2.95209366230103 2.0411e-07 au
tp 2456774.026291245772
(2014-Apr-26.52629125)
0.00088049 TDB
node 15.97870041372263 3.0523e-05 deg
peri 103.9345191861517 0.00016861 deg
i 11.71739492251205 1.0603e-05 deg
  Orbit Determination Parameters
   # obs. used (total)      183  
   data-arc span      5919 days (16.21 yr)  
   first obs. used      2004-02-13  
   last obs. used      2020-04-28  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .57879  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-May-22 00:41:55  

Additional Information
 Jupiter MOID = 1.82341 au 
 T_jup = 3.194 
Orbit Covariance (6×6)
  e q tp node peri i
e 4.146310438275881E-15 -1.278677124420395E-14 2.659555531782335E-11 -2.558032632658484E-14 4.98777218047242E-12 -8.409887908309044E-15
q -1.278677124420395E-14 4.166257496921607E-14 -9.632154411011347E-11 1.005267217661483E-13 -1.798814856447646E-11 2.692354548118104E-14
tp 2.659555531782335E-11 -9.632154411011347E-11 7.752540087871132E-7 -8.532611877075123E-10 1.460299083464302E-7 5.136323296403917E-11
node -2.558032632658484E-14 1.005267217661483E-13 -8.532611877075123E-10 9.316684377405944E-10 -1.071195962902627E-9 -9.935448649108872E-11
peri 4.98777218047242E-12 -1.798814856447646E-11 1.460299083464302E-7 -1.071195962902627E-9 2.842925871693839E-8 1.073745706561816E-10
i -8.409887908309044E-15 2.692354548118104E-14 5.136323296403917E-11 -9.935448649108872E-11 1.073745706561816E-10 1.12422060741699E-10

Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 15.8   n/a MPO460499  

382278 (2012 TL221)          Discovered 2004-Feb-13 by Spacewatch at Kitt Peak
Reference: Last Updated: 2013-12-19

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Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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