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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 2459396.5 (2021-Jul-01.0) TDB
Reference: JPL 17 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2768493417617001 4.2474e-08  
a 3.056547542834826 3.9758e-08 au
q 2.210344367537663 1.3918e-07 au
i 3.336558508231623 1.1139e-05 deg
node 327.5829339185004 8.8387e-05 deg
peri 75.23423609479541 9.3158e-05 deg
M 61.07668754332168 2.8963e-05 deg
tp 2459065.355051442565
(2020-Aug-03.85505144)
0.00015297 TDB
period 1951.844251476793
5.34
3.8083e-05
1.043e-07
d
yr
n .1844409459041718 3.5987e-09 deg/d
Q 3.90275071813199 5.0765e-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 = 1.2214 au 
 Jupiter MOID = 1.55534 au 
 T_jup = 3.173 
[ show covariance matrix ]

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 16.90   n/a MPCxxxxx  
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

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