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382146 (2011 LT21)
Classification: Main-belt Asteroid          SPK-ID: 2382146
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 13 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1396619259205374 7.1716e-08  
a 3.184694373431651 6.2231e-08 au
q 2.739913823769887 2.3682e-07 au
i 4.459531982785633 5.915e-06 deg
node 80.57023145121471 0.00012925 deg
peri 145.095957100772 0.00013427 deg
M 217.9098655959726 4.2718e-05 deg
tp 2459819.834971313631
(2022-Aug-28.33497131)
0.00026341 TDB
period 2075.869594395617
5.68
6.0845e-05
1.666e-07
d
yr
n .1734212982221616 5.0831e-09 deg/d
Q 3.629474923093414 7.0922e-08 au
  Orbit Determination Parameters
   # obs. used (total)      107  
   data-arc span      5352 days (14.65 yr)  
   first obs. used      2005-03-10  
   last obs. used      2019-11-04  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .71544  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Dec-05 00:22:02  

Additional Information
 Earth MOID = 1.73194 au 
 Jupiter MOID = 1.35928 au 
 T_jup = 3.179 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457564.5 (2016-Jun-25.0) TDB
Reference: JPL 13 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1413822692699753 7.1522e-08  
q 2.735012343279869 2.3733e-07 au
tp 2457743.760586052269
(2016-Dec-21.26058605)
0.00022026 TDB
node 80.598354610981 0.00012935 deg
peri 144.8749403502661 0.00013426 deg
i 4.458393927033398 5.9124e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      107  
   data-arc span      5352 days (14.65 yr)  
   first obs. used      2005-03-10  
   last obs. used      2019-11-04  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .71544  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Dec-05 00:22:02  

Additional Information
 Jupiter MOID = 1.35928 au 
 T_jup = 3.179 
Orbit Covariance (6×6)
  e q tp node peri i
e 5.115456916154125E-15 -1.652696804799376E-14 -7.162749445148902E-12 1.124782328304195E-14 -1.204968309703659E-12 -3.020607245798489E-16
q -1.652696804799376E-14 5.63248587932165E-14 3.011496659794197E-11 -4.504777568677414E-14 5.000317214646037E-12 3.01018007191799E-15
tp -7.162749445148902E-12 3.011496659794197E-11 4.851473830424471E-8 -1.067557087936E-10 8.151613277139881E-9 1.056159887095105E-11
node 1.124782328304195E-14 -4.504777568677414E-14 -1.067557087936E-10 1.673120044341891E-8 -1.669795225104297E-8 -1.268944491154864E-10
peri -1.204968309703659E-12 5.000317214646037E-12 8.151613277139881E-9 -1.669795225104297E-8 1.802660646033809E-8 1.282081805009328E-10
i -3.020607245798489E-16 3.01018007191799E-15 1.056159887095105E-11 -1.268944491154864E-10 1.282081805009328E-10 3.495704818171204E-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 16.2   n/a MPO455743  

382146 (2011 LT21)          Discovered 2005-Mar-10 by Spacewatch at Kitt Peak
Reference: Last Updated: 2013-12-19

[ show close-approach data ]
Alternate Designations
 2011 LT21 = 2005 EH149 = 2005 JS185 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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