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129441 (1981 DJ3)
Classification: Main-belt Asteroid          SPK-ID: 2129441
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 13 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1797130277419444 4.903e-08  
a 2.816264061204096 2.3843e-08 au
q 2.310144719844283 1.3593e-07 au
i 6.875121038665633 5.7329e-06 deg
node 284.778522034392 5.1593e-05 deg
peri 175.02850685 5.4349e-05 deg
M 178.7385887025308 1.8694e-05 deg
tp 2458143.414179533925
(2018-Jan-24.91417953)
8.5752e-05 TDB
period 1726.269059230959
4.73
2.1922e-05
6.002e-08
d
yr
n .2085422304680463 2.6483e-09 deg/d
Q 3.322383402563909 2.8127e-08 au
  Orbit Determination Parameters
   # obs. used (total)      483  
   data-arc span      13961 days (38.22 yr)  
   first obs. used      1981-02-09  
   last obs. used      2019-05-02  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .5386  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-May-30 07:06:32  

Additional Information
 Earth MOID = 1.32711 au 
 Jupiter MOID = 1.84672 au 
 T_jup = 3.285 
[ 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 15.4   n/a MPO475132  

129441 (1981 DJ3)          Discovered 1981-Feb-28 by Bus, S. J. at Siding Spring
Reference: 20060711/Numbers.arcLast Updated: 2006-07-17

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