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(2015 XY261)
Classification: Apollo [NEO]          SPK-ID: 3736517
[ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Close-Approach Data ]

[ hide orbit diagram ]

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 6 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .4646487003751125 0.00013798  
a 1.494846253229209 0.00031723 au
q .8002678844056509 3.6431e-05 au
i 1.590048111132318 8.8153e-05 deg
node 86.91391523074762 0.00087361 deg
peri 61.93474234316729 0.0007568 deg
M 133.680480186031 0.2696 deg
tp 2458752.610167597607
(2019-Sep-26.11016760)		 0.42102 TDB
period 667.5644756861562
1.83		 0.2125
0.0005818		 d
yr
n .5392737527412225 0.00017166 deg/d
Q 2.189424622052768 0.00046463 au
   Orbit Determination Parameters
   # obs. used (total)      41  
   data-arc span      9 days  
   first obs. used      2015-12-06  
   last obs. used      2015-12-15  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      6  
   norm. resid. RMS      .34279  
   source      ORB  
   producer      Otto Matic  
   solution date      2017-Apr-06 08:29:56  

Additional Information
 Earth MOID = .00174225 au 
 Jupiter MOID = 2.82155 au 
 T_jup = 4.430 
[ 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 27.2   n/a MPO358595  

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