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JPL Small-Body Database Browser
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442430 (2011 UE139)
Classification: Main-belt Asteroid          SPK-ID: 2442430
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 9 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .08921849062502642 1.6908e-07  
a 2.740750826128685 7.6759e-08 au
q 2.49622517424219 5.2007e-07 au
i 2.616213784119396 1.092e-05 deg
node 9.231341867960642 0.000206 deg
peri 23.58039282799882 0.0002153 deg
M 333.6632022680266 6.4623e-05 deg
tp 2459121.744828901538
(2020-Sep-29.24482890)
0.00029952 TDB
period 1657.306208930788
4.54
6.9623e-05
1.906e-07
d
yr
n .2172199669922519 9.1254e-09 deg/d
Q 2.985276478015181 8.3607e-08 au
  Orbit Determination Parameters
   # obs. used (total)      63  
   data-arc span      7449 days (20.39 yr)  
   first obs. used      1999-02-09  
   last obs. used      2019-07-03  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .57237  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Sep-24 07:43:10  

Additional Information
 Earth MOID = 1.50226 au 
 Jupiter MOID = 2.39023 au 
 T_jup = 3.343 
[ 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 17.4   n/a MPO477089  

442430 (2011 UE139)          Discovered 2008-Jan-15 by Mt. Lemmon Survey at Mount Lemmon
Reference: Last Updated: 2015-09-02

Alternate Designations
 2011 UE139 = 1999 CT131 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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