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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 2459396.5 (2021-Jul-01.0) TDB
Reference: JPL 97 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .5430973837988589 8.4622e-09  
a 1.859170679824604 1.0638e-09 au
q .8494599475763158 1.5562e-08 au
i .3503513883558009 1.8981e-06 deg
node 27.81494964362553 0.00017915 deg
peri 140.6410796247214 0.00017911 deg
M 179.1744001829305 4.4487e-07 deg
tp 2458935.659352757131
(2020-Mar-27.15935276)		 1.2138e-06 TDB
period 925.9282176362935
2.54		 7.9468e-07
2.176e-09		 d
yr
n .3887990377040315 3.3369e-10 deg/d
Q 2.868881412072893 1.6415e-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.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .3129  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-14 14:31:49  

Additional Information
 Earth MOID = .00185858 au 
 Jupiter MOID = 2.10407 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 20.65   n/a E2021B25  

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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