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438908 (2009 XO)
Classification: Apollo [NEO, PHA]          SPK-ID: 2438908
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | 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.


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Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 94 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .5423186828345099 8.4584e-09  
a 1.859360224254007 1.0374e-09 au
q .8509944365216952 1.5594e-08 au
i .3507989926344524 1.8949e-06 deg
node 27.72766474214903 0.00018005 deg
peri 140.7103206966986 0.00018001 deg
M 25.34781582343452 4.776e-07 deg
tp 2458935.294868765262
(2020-Mar-26.79486877)
1.2418e-06 TDB
period 926.0698202960662
2.54
7.7503e-07
2.122e-09
d
yr
n .3887395875668504 3.2534e-10 deg/d
Q 2.86772601198632 1.6e-09 au
  Orbit Determination Parameters
   # obs. used (total)      681  
   # delay obs. used      3  
   # Doppler obs. used      1  
   data-arc span      3868 days (10.59 yr)  
   first obs. used      2009-12-09  
   last obs. used      2020-07-12  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .31056  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Jul-13 07:10:17  

Additional Information
 Earth MOID = .00183729 au 
 Jupiter MOID = 2.10679 au 
 T_jup = 3.803 
[ show covariance matrix ]

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

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 20.5   n/a MPO346169  

438908 (2009 XO)          Discovered 2009-Dec-09 by OAM at La Sagra
Reference: Last Updated: 2015-07-06

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