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(2009 TD8)
Classification: Aten [NEO]          SPK-ID: 3471514
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Close-Approach Data ]

[ hide orbit diagram ]

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.


Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 7 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2450175668559955 0.00034673  
a .882916773260741 0.00062838 au
q .6665866537400476 0.00056292 au
i 5.089070606753761 0.04281 deg
node 20.20989348462459 0.074434 deg
peri 147.3103077116343 0.22891 deg
M 33.86495600472519 1.8618 deg
tp 2459171.994668695048
(2020-Nov-18.49466870)
1.5368 TDB
period 303.0247335431622
0.83
0.3235
0.0008857
d
yr
n 1.1880218350187 0.0012683 deg/d
Q 1.099246892781435 0.00078234 au
  Orbit Determination Parameters
   # obs. used (total)      19  
   data-arc span      1 day  
   first obs. used      2009-10-14  
   last obs. used      2009-10-15  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      7  
   norm. resid. RMS      .44689  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-15 03:03:00  

Additional Information
 Earth MOID = .0210355 au 
 Jupiter MOID = 3.86687 au 
 T_jup = 6.689 
[ hide covariance matrix ]
Orbital Elements at Epoch 2455119.5 (2009-Oct-15.0) TDB
Reference: JPL 7 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2446820617899915 0.00060648  
q .6674861655313179 0.00070387 au
tp 2455227.483897512958
(2010-Jan-30.98389751)
0.082557 TDB
node 20.70441378619601 0.00074127 deg
peri 146.8949546829966 0.064706 deg
i 5.143483154579901 0.016555 deg
  Orbit Determination Parameters
   # obs. used (total)      19  
   data-arc span      1 day  
   first obs. used      2009-10-14  
   last obs. used      2009-10-15  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      7  
   norm. resid. RMS      .44689  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-15 03:03:00  

Additional Information
 Jupiter MOID = 3.86687 au 
 T_jup = 6.689 
Orbit Covariance (6×6)
  e q tp node peri i
e 3.678156961367251E-7 -4.212846360646569E-7 -4.02170572911385E-5 -4.462694099204497E-7 8.220816034092978E-6 9.887458163578513E-6
q -4.212846360646569E-7 4.954351931190321E-7 4.04764836172258E-5 5.208345125592464E-7 -1.660431172923929E-5 -1.16497715827661E-5
tp -4.02170572911385E-5 4.04764836172258E-5 .006815653995292523 4.459554852516376E-5 .002212528601915507 -.0009403330877590945
node -4.462694099204497E-7 5.208345125592464E-7 4.459554852516376E-5 5.494752158687953E-7 -1.537604147573012E-5 -1.223788255440179E-5
peri 8.220816034092978E-6 -1.660431172923929E-5 .002212528601915507 -1.537604147573012E-5 .004186929005839512 .000402047739049013
i 9.887458163578513E-6 -1.16497715827661E-5 -.0009403330877590945 -1.223788255440179E-5 .000402047739049013 .0002740633198808527

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

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 26.9   n/a MPO164406  

[ show close-approach data ]
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Close-Approach Data ]
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