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(2011 UL21)
Classification: Apollo [NEO, PHA]          SPK-ID: 3582235
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2456800.5 (2014-May-23.0) TDB
Reference: JPL 24 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .6532035872819881 2.9334e-07  
a 2.122152768018327 4.9927e-08 AU
q .7359549671883551 6.2892e-07 AU
i 34.85008360230938 4.2559e-05 deg
node 275.6071000660137 6.4583e-05 deg
peri 284.7397899539988 4.6832e-05 deg
M 278.9393601731582 2.8747e-05 deg
tp 2457054.755830066208
(2015-Feb-01.25583007)
9.597e-05 JED
period 1129.180561852975
3.09
3.9848e-05
1.091e-07
d
yr
n .3188152649468595 1.1251e-08 deg/d
Q 3.508350568848299 8.2539e-08 AU
  Orbit Determination Parameters
   # obs. used (total)      133  
   data-arc span      8306 days (22.74 yr)  
   first obs. used      1989-10-29  
   last obs. used      2012-07-26  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .54764  
   data source      ORB  
   producer      Otto Matic  
   solution date      2014-Jun-13 15:03:18  

Additional Information
 Earth MOID = .0192583 AU 
 T_jup = 3.246 
[ show covariance matrix ]

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

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 15.8 mag n/a E2013Q25  

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