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415029 (2011 UL21)
Classification: Apollo [NEO, PHA]          SPK-ID: 2415029
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2457600.5 (2016-Jul-31.0) TDB
Reference: JPL 42 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .6532749004004426 1.6216e-07  
a 2.122587792673162 3.3149e-08 au
q .7359544638234067 3.4612e-07 au
i 34.84536871833264 2.6226e-05 deg
node 275.5842111913976 3.8665e-05 deg
peri 284.7503415861677 3.0733e-05 deg
M 173.916764801228 1.9395e-05 deg
tp 2457054.822725332515
(2015-Feb-01.32272533)
5.3213e-05 JED
period 1129.527789369892
3.09
2.646e-05
7.244e-08
d
yr
n .3187172581214902 7.4662e-09 deg/d
Q 3.509221121522916 5.4804e-08 au
  Orbit Determination Parameters
   # obs. used (total)      177  
   data-arc span      9379 days (25.68 yr)  
   first obs. used      1989-10-29  
   last obs. used      2015-07-04  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .60282  
   data source      ORB  
   producer      Otto Matic  
   solution date      2016-Feb-26 15:08:42  

Additional Information
 Earth MOID = .0193567 au 
 Jupiter MOID = 2.70505 au 
 T_jup = 3.245 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 15.8 mag n/a MPO346138  

415029 (2011 UL21)          Discovered 2011-Oct-17 by CSS at Catalina
Reference: Last Updated: 2014-11-10

[ show close-approach data ]
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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