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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 2457000.5 (2014-Dec-09.0) TDB
Reference: JPL 31 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .6531701177517452 2.2322e-07  
a 2.122499157146178 3.7864e-08 AU
q .736146132745029 4.7924e-07 AU
i 34.84752344549983 3.4904e-05 deg
node 275.6088737293999 4.0978e-05 deg
peri 284.7243972758032 3.5678e-05 deg
M 342.7069385729841 2.1619e-05 deg
tp 2457054.754916563260
(2015-Feb-01.25491656)
6.8755e-05 JED
period 1129.45703947251
3.09
3.0223e-05
8.275e-08
d
yr
n .3187372227704478 8.5292e-09 deg/d
Q 3.508852181547326 6.2596e-08 AU
  Orbit Determination Parameters
   # obs. used (total)      156  
   data-arc span      9162 days (25.08 yr)  
   first obs. used      1989-10-29  
   last obs. used      2014-11-29  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .53359  
   data source      ORB  
   producer      Otto Matic  
   solution date      2014-Dec-03 05:21:12  

Additional Information
 Earth MOID = .0208825 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 15.7 mag n/a MPO311355  

415029 (2011 UL21)          Discovered 2011-Oct-17 by CSS at Catalina (703)
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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