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129431 (4355 T-3)
Classification: Main-belt Asteroid          SPK-ID: 2129431
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 16 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .24135640001843 9.1123e-08  
a 2.522141502269877 1.0772e-08 au
q 1.913406508944945 2.3159e-07 au
i 7.965178141287909 6.0898e-06 deg
node 56.74448178625548 5.7442e-05 deg
peri 301.2993546393466 5.7898e-05 deg
M 240.2897644189529 8.6922e-06 deg
tp 2459486.998364320423
(2021-Sep-29.49836432)
3.6636e-05 TDB
period 1463.02787147034
4.01
9.3724e-06
2.566e-08
d
yr
n .2460650319930001 1.5763e-09 deg/d
Q 3.13087649559481 1.3371e-08 au
  Orbit Determination Parameters
   # obs. used (total)      400  
   data-arc span      15533 days (42.53 yr)  
   first obs. used      1977-10-16  
   last obs. used      2020-04-26  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .60902  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-May-20 21:43:55  

Additional Information
 Earth MOID = .924737 au 
 Jupiter MOID = 2.3566 au 
 T_jup = 3.401 
[ 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 16.5   n/a MPO325369  

129431 (4355 T-3)          Discovered 1977-Oct-16 by van Houten, C. J., van Houten-Groeneveld, I., Gehrels, T. at Palomar
Reference: 20060314/Numbers.arcLast Updated: 2006-03-23

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