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437123 (2012 US139)
Classification: Outer Main-belt Asteroid          SPK-ID: 2437123
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 .03828018655282767 8.9753e-08  
a 3.217268876771938 6.7529e-08 au
q 3.094111223978502 2.9577e-07 au
i 10.97011659173126 9.3173e-06 deg
node 329.2518006556093 4.0059e-05 deg
peri 331.5709374326737 0.00012639 deg
M 196.8255047074249 0.00011956 deg
tp 2459955.886809086424
(2023-Jan-11.38680909)
0.00069602 TDB
period 2107.80030699297
5.77
6.6363e-05
1.817e-07
d
yr
n .1707941681219239 5.3774e-09 deg/d
Q 3.340426529565374 7.0115e-08 au
  Orbit Determination Parameters
   # obs. used (total)      94  
   data-arc span      7096 days (19.43 yr)  
   first obs. used      2000-08-30  
   last obs. used      2020-02-03  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .57044  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-26 10:08:15  

Additional Information
 Earth MOID = 2.08394 au 
 Jupiter MOID = 1.87004 au 
 T_jup = 3.160 
[ 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 16.1   n/a MPO472423  

437123 (2012 US139)          Discovered 2009-Jan-20 by Spacewatch at Kitt Peak
Reference: Last Updated: 2015-06-04

[ show close-approach data ]
Alternate Designations
 2012 US139 = 2009 BH191 = 2009 DA11 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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