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JPL Small-Body Database Browser
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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 ]

[ show orbit diagram ]
Orbital Elements at Epoch 2458600.5 (2019-Apr-27.0) TDB
Reference: JPL 12 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .03807919703047759 8.9596e-08  
a 3.217655570018236 7.3784e-08 au
q 3.095129829591298 2.9623e-07 au
i 10.96795165274427 9.7368e-06 deg
node 329.2634728830094 4.2177e-05 deg
peri 331.2147322528403 0.00014061 deg
M 128.8915228773687 0.00013212 deg
tp 2457845.703962264730
(2017-Apr-02.20396226)		 0.00078207 TDB
period 2108.180332722315
5.77		 7.2514e-05
1.985e-07		 d
yr
n .1707633803485531 5.8737e-09 deg/d
Q 3.340181310445175 7.6594e-08 au
   Orbit Determination Parameters
   # obs. used (total)      88  
   data-arc span      6676 days (18.28 yr)  
   first obs. used      2000-08-30  
   last obs. used      2018-12-10  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .57313  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Jul-14 14:52:57  

Additional Information
 Earth MOID = 2.08423 au 
 Jupiter MOID = 1.87014 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 16.0   n/a MPO460655  

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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