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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 34 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .653170289825699 1.8577e-07  
a 2.122499127850538 3.3831e-08 AU
q .7361457573576087 3.9706e-07 AU
i 34.84752219133682 3.3912e-05 deg
node 275.6088500858434 3.8855e-05 deg
peri 284.7243863663257 3.4848e-05 deg
M 342.7069638398073 1.6897e-05 deg
tp 2457054.754836168345
(2015-Feb-01.25483617)
5.3685e-05 JED
period 1129.457016088638
3.09
2.7004e-05
7.393e-08
d
yr
n .3187372293694689 7.6207e-09 deg/d
Q 3.508852498343467 5.5929e-08 AU
  Orbit Determination Parameters
   # obs. used (total)      164  
   data-arc span      9337 days (25.56 yr)  
   first obs. used      1989-10-29  
   last obs. used      2015-05-23  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .54499  
   data source      ORB  
   producer      Otto Matic  
   solution date      2015-May-23 06:19:32  

Additional Information
 Earth MOID = .0208822 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
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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