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516725 (2009 DK12)
Classification: Outer Main-belt Asteroid          SPK-ID: 2516725
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 9 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .4359425729225922 3.2969e-07  
a 4.346942970814171 1.0945e-07 au
q 2.451925467769664 1.4034e-06 au
i 45.42675277279358 3.0741e-05 deg
node 62.57639124461576 1.4862e-05 deg
peri 223.1303337160751 5.9215e-05 deg
M 59.66966770709586 2.4393e-05 deg
tp 2458451.812003628734
(2018-Nov-29.31200363)
0.00022303 TDB
period 3310.353254576042
9.06
0.00012502
3.423e-07
d
yr
n .1087497231609215 4.1071e-09 deg/d
Q 6.241960473858677 1.5716e-07 au
  Orbit Determination Parameters
   # obs. used (total)      131  
   data-arc span      3406 days (9.33 yr)  
   first obs. used      2009-02-20  
   last obs. used      2018-06-19  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .5453  
   source      ORB  
   producer      Otto Matic  
   solution date      2018-Oct-04 12:49:29  

Additional Information
 Earth MOID = 1.54847 au 
 Jupiter MOID = .0712547 au 
 T_jup = 2.352 
[ 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 15.3   n/a MPO179421  

516725 (2009 DK12)          Discovered 2009-Feb-20 by Spacewatch at Kitt Peak
Reference: Last Updated: 2018-05-06

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