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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 39 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .6531704915752273 1.6492e-07  
a 2.122499113457183 3.3273e-08 AU
q .7361453241523704 3.5211e-07 AU
i 34.84752300688426 2.6382e-05 deg
node 275.6088488535116 3.8789e-05 deg
peri 284.7244220375129 3.0865e-05 deg
M 342.7069672137132 1.6852e-05 deg
tp 2457054.754825031239
(2015-Feb-01.25482503)
5.3534e-05 JED
period 1129.457004599816
3.09
2.6558e-05
7.271e-08
d
yr
n .3187372326116597 7.4949e-09 deg/d
Q 3.508852902761995 5.5006e-08 AU
  Orbit Determination Parameters
   # obs. used (total)      174  
   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      .58355  
   data source      ORB  
   producer      Otto Matic  
   solution date      2015-Jul-06 17:30:20  

Additional Information
 Earth MOID = .0208816 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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