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(2012 XL55)
Classification: Apollo [NEO]          SPK-ID: 3619730
[ 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 2456270.5 (2012-Dec-09.0) TDB
Reference: JPL 4 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .6469245729876328 0.0020175  
a 1.726067844932762 0.0077172 au
q .6094321414019511 0.00075759 au
i 2.390919004108574 0.0077093 deg
node 77.17001143574727 0.0018868 deg
peri 90.13271044283053 0.007068 deg
M 338.247827621512 0.17545 deg
tp 2456320.547841945245
(2013-Jan-28.04784195)		 0.068036 TDB
period 828.2953438759286
2.27		 5.5549
0.01521		 d
yr
n .4346275789930372 0.0029148 deg/d
Q 2.842703548463572 0.01271 au
   Orbit Determination Parameters
   # obs. used (total)      16  
   data-arc span      2 days  
   first obs. used      2012-12-08  
   last obs. used      2012-12-10  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      8  
   norm. resid. RMS      .9706  
   source      ORB  
   producer      Otto Matic  
   solution date      2017-Apr-06 08:47:44  

Additional Information
 Earth MOID = .000930692 au 
 Jupiter MOID = 2.13465 au 
 T_jup = 3.892 
[ hide covariance matrix ]
Orbit Covariance (6×6)
  e q tp node peri i
e 4.070108550030531E-6 -1.528267550115857E-6 -.0001372566342670182 -3.805457261900239E-6 1.389814087272836E-5 1.555091293402212E-5
q -1.528267550115857E-6 5.739494404046422E-7 5.153426982290553E-5 1.429248717822435E-6 -5.234891278483358E-6 -5.840219293909871E-6
tp -.0001372566342670182 5.153426982290553E-5 .004628841560794419 .0001283197076365466 -.0004681323824601508 -.0005243881636320997
node -3.805457261900239E-6 1.429248717822435E-6 .0001283197076365466 3.559845130938455E-6 -1.304924214209749E-5 -1.454373241286421E-5
peri 1.389814087272836E-5 -5.234891278483358E-6 -.0004681323824601508 -1.304924214209749E-5 4.995723578409181E-5 5.326623300468454E-5
i 1.555091293402212E-5 -5.840219293909871E-6 -.0005243881636320997 -1.454373241286421E-5 5.326623300468454E-5 5.943284490189335E-5

[ 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 27.0   n/a MPO247320  

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