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416843 (2005 LA20)
Classification: Mars-crossing Asteroid          SPK-ID: 2416843
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 9 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .352790455072115 8.1103e-08  
a 2.568312443489828 6.6197e-08 au
q 1.662236327783676 2.1831e-07 au
i 13.08971721459275 8.5572e-06 deg
node 136.048333641751 8.5659e-05 deg
peri 168.1782094371657 0.00011932 deg
M 203.9250314827001 9.1384e-05 deg
tp 2459652.279904076198
(2022-Mar-13.77990408)
0.00040553 TDB
period 1503.384993099793
4.12
5.8124e-05
1.591e-07
d
yr
n .2394596205578218 9.258e-09 deg/d
Q 3.47438855919598 8.9551e-08 au
  Orbit Determination Parameters
   # obs. used (total)      80  
   data-arc span      4895 days (13.40 yr)  
   first obs. used      2005-05-21  
   last obs. used      2018-10-15  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .69736  
   source      ORB  
   producer      Otto Matic  
   solution date      2018-Oct-31 05:19:40  

Additional Information
 Earth MOID = .649575 au 
 Jupiter MOID = 1.82631 au 
 T_jup = 3.307 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457026.5 (2015-Jan-04.0) TDB
Reference: JPL 9 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .3546685785444448 8.029e-08  
q 1.655637205286714 2.1432e-07 au
tp 2456646.221177646086
(2013-Dec-19.72117765)
0.00029429 TDB
node 136.122456817461 8.5523e-05 deg
peri 168.0896607613167 0.00011884 deg
i 13.10603735349865 8.5668e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      80  
   data-arc span      4895 days (13.40 yr)  
   first obs. used      2005-05-21  
   last obs. used      2018-10-15  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .69736  
   source      ORB  
   producer      Otto Matic  
   solution date      2018-Oct-31 05:19:40  

Additional Information
 Jupiter MOID = 1.82631 au 
 T_jup = 3.307 
Orbit Covariance (6×6)
  e q tp node peri i
e 6.446508220080811E-15 -1.689013654026785E-14 -7.322199049622906E-12 2.250373889105118E-13 -1.871055762958506E-12 1.95405858766355E-15
q -1.689013654026785E-14 4.593307634276405E-14 2.975699531837865E-11 -1.245812436617489E-12 8.079438081363419E-12 -5.228913577449528E-15
tp -7.322199049622906E-12 2.975699531837865E-11 8.660943761805502E-8 -4.631890780840797E-9 2.523345844260021E-8 3.441435680537569E-11
node 2.250373889105118E-13 -1.245812436617489E-12 -4.631890780840797E-9 7.314250465648096E-9 -8.233595825512634E-9 1.019888951535704E-10
peri -1.871055762958506E-12 8.079438081363419E-12 2.523345844260021E-8 -8.233595825512634E-9 1.41227546243578E-8 -9.061433990638216E-11
i 1.95405858766355E-15 -5.228913577449528E-15 3.441435680537569E-11 1.019888951535704E-10 -9.061433990638216E-11 7.339078910298511E-11

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 17.3   n/a MPO472191  

416843 (2005 LA20)          Discovered 2005-Jun-11 by Lowe, A. at Mayhill
Reference: Last Updated: 2015-01-07

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