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(2011 UT91)
Classification: Apollo [NEO]          SPK-ID: 3582669
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Close-Approach Data ]

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For accurate long-term ephemerides, please instead use our Horizons system.This orbit viewer was implemented using two-body methods, and hence should not be used for determining accurate long-term trajectories (over several years or decades) or planetary encounter circumstances.


Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 13 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .4097683901477838 0.00017827  
a 1.363110724658234 0.00031772 au
q .8045510374218505 5.5478e-05 au
i 13.55821924481786 0.0053851 deg
node 231.6297299318454 0.00015819 deg
peri 246.9168612647325 0.0016401 deg
M 226.2198350147904 0.73937 deg
tp 2459416.515221832792
(2021-Jul-21.01522183)
1.2694 TDB
period 581.2930479522332
1.59
0.20324
0.0005564
d
yr
n .6193089720721766 0.00021653 deg/d
Q 1.921670411894617 0.00044792 au
  Orbit Determination Parameters
   # obs. used (total)      52  
   data-arc span      20 days  
   first obs. used      2011-10-23  
   last obs. used      2011-11-12  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      7  
   norm. resid. RMS      .36388  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-15 05:33:18  

Additional Information
 Earth MOID = .00749464 au 
 Jupiter MOID = 3.2667 au 
 T_jup = 4.725 
[ show covariance matrix ]

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

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 23.1   n/a MPO215211  

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