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312870 (2011 UA161)
Classification: Main-belt Asteroid          SPK-ID: 2312870
[ 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 .05014286921486723 8.1067e-08  
a 2.872451160991554 4.7382e-08 au
q 2.728418218099861 2.4231e-07 au
i 11.10746648574785 9.6122e-06 deg
node 244.7273381085047 2.9735e-05 deg
peri 163.0748467214772 8.0008e-05 deg
M 281.2693369364308 7.8541e-05 deg
tp 2459389.382871696376
(2021-Jun-23.88287170)		 0.00039359 TDB
period 1778.186901559018
4.87		 4.3998e-05
1.205e-07		 d
yr
n .2024534089663867 5.0093e-09 deg/d
Q 3.016484103883247 4.9758e-08 au
   Orbit Determination Parameters
   # obs. used (total)      145  
   data-arc span      6513 days (17.83 yr)  
   first obs. used      2001-10-20  
   last obs. used      2019-08-20  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .63634  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Sep-24 06:02:30  

Additional Information
 Earth MOID = 1.74112 au 
 Jupiter MOID = 2.2807 au 
 T_jup = 3.268 
[ 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 16.3   n/a MPO437380  

312870 (2011 UA161)          Discovered 2001-Oct-20 by NEAT at Palomar
Reference: 20120109/Numbers.arcLast Updated: 2012-01-11

[ show close-approach data ]
Alternate Designations
 2011 UA161 = 2010 JJ86 
[ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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