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JPL Small-Body Database Browser
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(2015 XY261)
Classification: Apollo [NEO]          SPK-ID: 3736517
[ 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 2458600.5 (2019-Apr-27.0) TDB
Reference: JPL 6 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .4645356108909823 0.00013908  
a 1.494642993795291 0.00031677 au
q .8003280976086684 3.8263e-05 au
i 1.590200367248565 8.8065e-05 deg
node 86.91574366087671 0.0008606 deg
peri 61.92550975144353 0.00075512 deg
M 277.9749325749627 0.20112 deg
tp 2458752.571814597281
(2019-Sep-26.07181460)		 0.42122 TDB
period 667.4283237261978
1.83		 0.21218
0.0005809		 d
yr
n .5393837618250142 0.00017147 deg/d
Q 2.188957889981912 0.00046392 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 = .00172067 au 
 Jupiter MOID = 2.82357 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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