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JPL Small-Body Database Browser
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523973 (1999 CD139)
Classification: Main-belt Asteroid          SPK-ID: 2523973
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2458600.5 (2019-Apr-27.0) TDB
Reference: JPL 6 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2323157205740312 7.8917e-08  
a 2.455524395935251 2.275e-08 au
q 1.88506747650644 1.9152e-07 au
i 8.381598088618338 6.5341e-06 deg
node 324.8043370240153 6.0823e-05 deg
peri 303.2592047868561 6.2524e-05 deg
M 351.2686331484448 1.2167e-05 deg
tp 2458634.587452175176
(2019-May-31.08745218)
4.7489e-05 TDB
period 1405.448080660789
3.85
1.9532e-05
5.348e-08
d
yr
n .2561460682565673 3.5597e-09 deg/d
Q 3.025981315364061 2.8035e-08 au
  Orbit Determination Parameters
   # obs. used (total)      94  
   data-arc span      7458 days (20.42 yr)  
   first obs. used      1999-02-07  
   last obs. used      2019-07-10  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .67928  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Sep-24 08:40:53  

Additional Information
 Earth MOID = .88399 au 
 Jupiter MOID = 2.15131 au 
 T_jup = 3.441 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 16.9   .34292 MPO457212 autocmod 2.6q

523973 (1999 CD139)          Discovered 1999-Feb-07 by Spacewatch at Kitt Peak
Reference: Last Updated: 2019-05-29

Alternate Designations
 1999 CD139 = 2004 RT343 = 2011 HN81 = 2015 KC153 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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