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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 15 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .05014293663064359 7.1803e-08  
a 2.872451185420986 3.5631e-08 au
q 2.728418047655805 2.2925e-07 au
i 11.10746326972248 5.2212e-06 deg
node 244.7273505089529 2.8493e-05 deg
peri 163.0748534698315 6.3984e-05 deg
M 281.2693140260695 5.7533e-05 deg
tp 2459389.382989821018
(2021-Jun-23.88298982)
0.00028598 TDB
period 1778.186924243528
4.87
3.3086e-05
9.058e-08
d
yr
n .2024534063836682 3.767e-09 deg/d
Q 3.016484323186168 3.7418e-08 au
  Orbit Determination Parameters
   # obs. used (total)      229  
   data-arc span      6967 days (19.07 yr)  
   first obs. used      2001-10-20  
   last obs. used      2020-11-16  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .5755  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Dec-18 00:42:41  

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 16.52   n/a E2021B25  

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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