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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.


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Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 14 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2765119136761288 4.8142e-08  
a 3.055171943776601 5.6365e-08 au
q 2.210380502993315 1.7021e-07 au
i 3.336549730355035 1.189e-05 deg
node 327.5846298648548 8.8472e-05 deg
peri 75.21192813710708 9.6713e-05 deg
M 348.0454791151893 4.0158e-05 deg
tp 2459065.271146868094
(2020-Aug-03.77114687)
0.00021903 TDB
period 1950.526758637468
5.34
5.3978e-05
1.478e-07
d
yr
n .1845655274432002 5.1076e-09 deg/d
Q 3.899963384559887 7.195e-08 au
  Orbit Determination Parameters
   # obs. used (total)      155  
   data-arc span      7115 days (19.48 yr)  
   first obs. used      2000-02-04  
   last obs. used      2019-07-29  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .56797  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Sep-24 07:22:19  

Additional Information
 Earth MOID = 1.22199 au 
 Jupiter MOID = 1.55595 au 
 T_jup = 3.173 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457492.5 (2016-Apr-14.0) TDB
Reference: JPL 14 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2726580785419292 5.2787e-08  
q 2.227692441889078 1.9435e-07 au
tp 2457093.880858912420
(2015-Mar-12.38085891)
0.0001835 TDB
node 329.2564387646417 8.7452e-05 deg
peri 71.70390321147543 9.7037e-05 deg
i 3.371579871680826 1.1926e-05 deg
  Orbit Determination Parameters
   # obs. used (total)      155  
   data-arc span      7115 days (19.48 yr)  
   first obs. used      2000-02-04  
   last obs. used      2019-07-29  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .56797  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Sep-24 07:22:19  

Additional Information
 Jupiter MOID = 1.55595 au 
 T_jup = 3.173 
Orbit Covariance (6×6)
  e q tp node peri i
e 2.786479158707812E-15 -1.004123561225635E-14 -5.700284693280719E-12 3.535314900632064E-15 -1.235196501295523E-12 3.728865681792132E-15
q -1.004123561225635E-14 3.777112999149492E-14 2.463797842860955E-11 -5.127650878849549E-14 5.47664938946646E-12 -2.584665331439562E-15
tp -5.700284693280719E-12 2.463797842860955E-11 3.367358626830497E-8 -7.670319897170994E-11 7.740444849582767E-9 1.339344459549357E-12
node 3.535314900632064E-15 -5.127650878849549E-14 -7.670319897170994E-11 7.64786763602433E-9 -7.648002331299331E-9 -3.158571026728455E-10
peri -1.235196501295523E-12 5.47664938946646E-12 7.740444849582767E-9 -7.648002331299331E-9 9.416185200004213E-9 3.147966906706091E-10
i 3.728865681792132E-15 -2.584665331439562E-15 1.339344459549357E-12 -3.158571026728455E-10 3.147966906706091E-10 1.42224783952715E-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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