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JPL Small-Body Database Browser
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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 ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 15 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .04117110744678443 6.365e-08  
a 3.083602345506329 5.8043e-08 au
q 2.956647022016331 2.0209e-07 au
i 11.71531238208186 1.2107e-05 deg
node 15.95454251588751 3.1487e-05 deg
peri 103.167101242087 0.00018353 deg
M 46.02747755030936 0.00017466 deg
tp 2458747.628053278024
(2019-Sep-21.12805328)
0.00095987 TDB
period 1977.816418907785
5.41
5.5843e-05
1.529e-07
d
yr
n .1820189156882436 5.1393e-09 deg/d
Q 3.210557668996326 6.0433e-08 au
  Orbit Determination Parameters
   # obs. used (total)      146  
   data-arc span      5833 days (15.97 yr)  
   first obs. used      2004-02-13  
   last obs. used      2020-02-02  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .58172  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-26 03:33:48  

Additional Information
 Earth MOID = 1.99847 au 
 Jupiter MOID = 1.82341 au 
 T_jup = 3.194 
[ hide covariance matrix ]
Orbital Elements at Epoch 2456963.5 (2014-Nov-02.0) TDB
Reference: JPL 15 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .04278241751492493 6.5226e-08  
q 2.952975540080967 2.0807e-07 au
tp 2456778.286713340394
(2014-Apr-30.78671334)
0.00091962 TDB
node 15.98698659490003 3.1498e-05 deg
peri 104.7581938983441 0.0001755 deg
i 11.71273236043305 1.2103e-05 deg
  Orbit Determination Parameters
   # obs. used (total)      146  
   data-arc span      5833 days (15.97 yr)  
   first obs. used      2004-02-13  
   last obs. used      2020-02-02  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .58172  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-26 03:33:48  

Additional Information
 Jupiter MOID = 1.82341 au 
 T_jup = 3.194 
Orbit Covariance (6×6)
  e q tp node peri i
e 4.254370039786468E-15 -1.308231950292356E-14 2.840291700467947E-11 -3.022795334148268E-14 5.323023376888044E-12 -8.80434223951768E-15
q -1.308231950292356E-14 4.32919264608681E-14 -9.328824146302543E-11 1.023258851725793E-13 -1.743692174458004E-11 2.818384731379846E-14
tp 2.840291700467947E-11 -9.328824146302543E-11 8.456926539699089E-7 -9.359438066471934E-10 1.588017793375522E-7 8.421811879741347E-11
node -3.022795334148268E-14 1.023258851725793E-13 -9.359438066471934E-10 9.921098971809062E-10 -1.145216822520382E-9 -5.487938044593418E-11
peri 5.323023376888044E-12 -1.743692174458004E-11 1.588017793375522E-7 -1.145216822520382E-9 3.080067651826812E-8 7.00801198817201E-11
i -8.80434223951768E-15 2.818384731379846E-14 8.421811879741347E-11 -5.487938044593418E-11 7.00801198817201E-11 1.464933277882634E-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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