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407139 (2009 TD2)
Classification: Main-belt Asteroid          SPK-ID: 2407139
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.


Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 17 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2767085970821475 4.2491e-08  
a 3.056021514042461 3.9593e-08 au
q 2.210394088238912 1.3914e-07 au
i 3.336558305395474 1.1139e-05 deg
node 327.5831687629894 8.8393e-05 deg
peri 75.22323636006494 9.3168e-05 deg
M 24.94249911787561 2.8531e-05 deg
tp 2459065.301926688605
(2020-Aug-03.80192669)
0.00015301 TDB
period 1951.340407474276
5.34
3.7922e-05
1.038e-07
d
yr
n .184488569303993 3.5853e-09 deg/d
Q 3.901648939846011 5.0549e-08 au
  Orbit Determination Parameters
   # obs. used (total)      174  
   data-arc span      7653 days (20.95 yr)  
   first obs. used      2000-02-04  
   last obs. used      2021-01-17  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .53491  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-14 12:38:57  

Additional Information
 Earth MOID = 1.22106 au 
 Jupiter MOID = 1.55537 au 
 T_jup = 3.173 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457543.5 (2016-Jun-04.0) TDB
Reference: JPL 17 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2726854266278172 4.3088e-08  
q 2.22818574758923 1.4531e-07 au
tp 2457094.033437931531
(2015-Mar-12.53343793)
0.00013768 TDB
node 329.2561270421209 8.7393e-05 deg
peri 71.75542380695501 9.3101e-05 deg
i 3.370747436202478 1.1167e-05 deg
  Orbit Determination Parameters
   # obs. used (total)      174  
   data-arc span      7653 days (20.95 yr)  
   first obs. used      2000-02-04  
   last obs. used      2021-01-17  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .53491  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-14 12:38:57  

Additional Information
 Jupiter MOID = 1.55537 au 
 T_jup = 3.173 
Orbit Covariance (6×6)
  e q tp node peri i
e 1.856572462171249E-15 -6.104948686219956E-15 -1.985616569346808E-12 -3.06247209940891E-15 -4.042866043156311E-13 3.5054481856677E-15
q -6.104948686219956E-15 2.111589102859015E-14 8.945163641436009E-12 -2.014449713025133E-14 1.964070172099776E-12 -4.033911605508655E-15
tp -1.985616569346808E-12 8.945163641436009E-12 1.8957158644817E-8 -4.63119205833579E-11 4.444900750779179E-9 -4.017251212427479E-12
node -3.06247209940891E-15 -2.014449713025133E-14 -4.63119205833579E-11 7.637587388522786E-9 -7.630952969774967E-9 -3.089958285532155E-10
peri -4.042866043156311E-13 1.964070172099776E-12 4.444900750779179E-9 -7.630952969774967E-9 8.667848495679869E-9 3.067649490318473E-10
i 3.5054481856677E-15 -4.033911605508655E-15 -4.017251212427479E-12 -3.089958285532155E-10 3.067649490318473E-10 1.247015700860633E-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 16.7   n/a MPO476941  
diameter diameter 2.236 km 1.013 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.067   0.038 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

407139 (2009 TD2)          Discovered 2009-Oct-11 by Astronomical Research Observatory at Charleston
Reference: Last Updated: 2014-09-12

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Alternate Designations
 2009 TD2 = 2000 CP143 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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