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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.


Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 6 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .4649407239328642 0.00013867  
a 1.494545337874484 0.00031668 au
q .799670346532634 3.7806e-05 au
i 1.589945957848331 8.7409e-05 deg
node 86.90792557582148 0.00084816 deg
peri 61.94753179790154 0.00071863 deg
M 241.5385279506827 0.3041 deg
tp 2459420.102202912230
(2021-Jul-24.60220291)		 0.63353 TDB
period 667.3629128590462
1.83		 0.21212
0.0005808		 d
yr
n .5394366289515936 0.00017145 deg/d
Q 2.189420329216333 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 = .0018106 au 
 Jupiter MOID = 2.82084 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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