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JPL Small-Body Database Browser
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(2015 XL261)
Classification: Apollo [NEO]          SPK-ID: 3736503
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 2457369.5 (2015-Dec-13.0) TDB
Reference: JPL 11 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .446985418612026 0.00090238  
a 1.567693796402037 0.002246 au
q .8669575285617962 0.0001726 au
i 1.486645400524186 0.0022457 deg
node 306.9403589384474 0.019976 deg
peri 192.1594574135925 0.015551 deg
M 337.8644521674527 0.055844 deg
tp 2457413.583702265278
(2016-Jan-26.08370227)
0.016481 TDB
period 716.9523399897613
1.96
1.5407
0.004218
d
yr
n .502125427200839 0.0010791 deg/d
Q 2.268430064242278 0.0032499 au
  Orbit Determination Parameters
   # obs. used (total)      52  
   data-arc span      8 days  
   first obs. used      2015-12-10  
   last obs. used      2015-12-18  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      8  
   norm. resid. RMS      .4159  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-15 15:34:18  

Additional Information
 Earth MOID = .0163496 au 
 Jupiter MOID = 2.77716 au 
 T_jup = 4.301 
[ 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 25.5   n/a MPO358593  

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