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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 36 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .6531704263315364 1.808e-07  
a 2.122499119698865 3.3713e-08 AU
q .7361454647968465 3.8637e-07 AU
i 34.84753923957151 3.2911e-05 deg
node 275.6088496293233 3.885e-05 deg
peri 284.724405248486 3.4101e-05 deg
M 342.7069669097124 1.6868e-05 deg
tp 2457054.754826224327
(2015-Feb-01.25482622)
5.3592e-05 JED
period 1129.457009581947
3.09
2.691e-05
7.368e-08
d
yr
n .3187372312056828 7.594e-09 deg/d
Q 3.508852774600884 5.5733e-08 AU
  Orbit Determination Parameters
   # obs. used (total)      167  
   data-arc span      9366 days (25.64 yr)  
   first obs. used      1989-10-29  
   last obs. used      2015-06-21  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .57754  
   data source      ORB  
   producer      Otto Matic  
   solution date      2015-Jun-21 06:18:04  

Additional Information
 Earth MOID = .0208818 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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