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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.


Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 96 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .5423186828342992 8.4582e-09  
a 1.859360224276102 1.0373e-09 au
q .8509944365321994 1.5594e-08 au
i .3507989908854707 1.8946e-06 deg
node 27.72766537317974 0.00017985 deg
peri 140.710320067562 0.00017981 deg
M 25.34781582656912 4.7759e-07 deg
tp 2458935.294868756036
(2020-Mar-26.79486876)		 1.2418e-06 TDB
period 926.069820312573
2.54		 7.7497e-07
2.122e-09		 d
yr
n .3887395875599212 3.2531e-10 deg/d
Q 2.867726012020006 1.5999e-09 au
   Orbit Determination Parameters
   # obs. used (total)      692  
   # 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      .31287  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-10 05:19:56  

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 ]
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