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(2015 XE261)
Classification: Apollo [NEO]          SPK-ID: 3736496
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.


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Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 7 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .3939409206619141 0.00026041  
a 1.630835943482995 0.00070566 au
q .9883829304587624 3.2106e-06 au
i 7.92683649102494 0.0048273 deg
node 76.893347733312 0.00071755 deg
peri 55.59306250337014 0.00059548 deg
M 28.40882662590286 0.48767 deg
tp 2458940.470512649676
(2020-Mar-31.97051265)
0.99151 TDB
period 760.7007403259734
2.08
0.49373
0.001352
d
yr
n .4732478633394439 0.00030716 deg/d
Q 2.273288956507227 0.00098364 au
  Orbit Determination Parameters
   # obs. used (total)      17  
   data-arc span      28 days  
   first obs. used      2015-12-07  
   last obs. used      2016-01-04  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      7  
   norm. resid. RMS      .46728  
   source      ORB  
   producer      Otto Matic  
   solution date      2017-Apr-06 08:29:59  

Additional Information
 Earth MOID = .0744035 au 
 Jupiter MOID = 2.80691 au 
 T_jup = 4.210 
[ 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 24.7   n/a MPO369296  

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