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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 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 97 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .5424979698542188 8.4515e-09  
a 1.859694458761001 1.0534e-09 au
q .8508139903340177 1.5561e-08 au
i .3507503805992795 1.8947e-06 deg
node 27.73483950750508 0.00017967 deg
peri 140.7162432493939 0.00017963 deg
M 103.0445842939027 4.6276e-07 deg
tp 2458935.354968618980
(2020-Mar-26.85496862)
1.2405e-06 TDB
period 926.3195339302785
2.54
7.8706e-07
2.155e-09
d
yr
n .388634792653629 3.3021e-10 deg/d
Q 2.868574927187984 1.6249e-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 = .0018845 au 
 Jupiter MOID = 2.10503 au 
 T_jup = 3.802 
[ 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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