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312518 (2009 DU31)
Classification: Main-belt Asteroid          SPK-ID: 2312518
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 11 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1296233724775774 5.1978e-08  
a 2.329975791987646 1.6283e-08 au
q 2.027956472039093 1.2024e-07 au
i 1.863030117534313 5.7947e-06 deg
node 298.914989732496 0.00020186 deg
peri 182.8369123328403 0.00020424 deg
M 100.0060545867092 3.0965e-05 deg
tp 2458639.631201815311
(2019-Jun-05.13120182)
0.00011055 TDB
period 1299.049021415482
3.56
1.3618e-05
3.728e-08
d
yr
n .2771258005396389 2.905e-09 deg/d
Q 2.6319951119362 1.8394e-08 au
  Orbit Determination Parameters
   # obs. used (total)      170  
   data-arc span      8127 days (22.25 yr)  
   first obs. used      1998-01-23  
   last obs. used      2020-04-24  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .61675  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-May-21 20:27:26  

Additional Information
 Earth MOID = 1.04376 au 
 Jupiter MOID = 2.43062 au 
 T_jup = 3.560 
[ 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 17.7   n/a MPO413278  

312518 (2009 DU31)          Discovered 2009-Feb-20 by Spacewatch at Kitt Peak
Reference: 20120109/Numbers.arcLast Updated: 2012-01-11

[ show close-approach data ]
Alternate Designations
 2009 DU31 = 1998 BG45 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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