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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 5 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .6442146708711701 0.0020813  
a 1.715791287155635 0.0078335 au
q .6104533678170462 0.0007841 au
i 2.380511260588759 0.0079521 deg
node 77.17253593180192 0.0019474 deg
peri 90.12312889885771 0.0073362 deg
M 338.0119948275913 0.18146 deg
tp 2456320.639320472317
(2013-Jan-28.13932047)
0.070423 TDB
period 820.9091833707616
2.25
5.6218
0.01539
d
yr
n .4385381565860823 0.0030032 deg/d
Q 2.821129206494223 0.01288 au
  Orbit Determination Parameters
   # obs. used (total)      15  
   data-arc span      2 days  
   first obs. used      2012-12-08  
   last obs. used      2012-12-10  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      8  
   norm. resid. RMS      .86748  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-15 07:19:34  

Additional Information
 Earth MOID = .000921276 au 
 Jupiter MOID = 2.15616 au 
 T_jup = 3.910 
[ hide covariance matrix ]
Orbit Covariance (6×6)
  e q tp node peri i
e 4.331760824946202E-6 -1.631799680286487E-6 -.0001465679335891256 -4.052155743114964E-6 1.490896190788894E-5 1.654846461160565E-5
q -1.631799680286487E-6 6.148150626520093E-7 5.520933783674699E-5 1.526823100046717E-6 -5.63263199833281E-6 -6.234971109427436E-6
tp -.0001465679335891256 5.520933783674699E-5 .004959347036898009 .0001370951789600331 -.0005038927860919139 -.0005598912002455832
node -4.052155743114964E-6 1.526823100046717E-6 .0001370951789600331 3.792423300561555E-6 -1.400131364562829E-5 -1.548425167761933E-5
peri 1.490896190788894E-5 -5.63263199833281E-6 -.0005038927860919139 -1.400131364562829E-5 5.381928952189034E-5 5.712034566716557E-5
i 1.654846461160565E-5 -6.234971109427436E-6 -.0005598912002455832 -1.548425167761933E-5 5.712034566716557E-5 6.323589266618771E-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  

[ hide close-approach data ]
Close-Approach Data   ...sorted by Date/Time (TDB)
Date/Time (TDB) Time Uncertainty
(days_HH:MM)
Body Nominal Distance (au) Minimum Distance (au) Maximum Distance (au) V-relative (km/s) V-infinity (km/s) JD (TDB) Time Uncertainty (minutes) Semi-major axis (km) Semi-minor axis (km) range-LOV angle (deg) N-sigma BP Orbit Ref. Reference Modified
2012-Dec-11 11:12 < 00:01 Earth 0.0108401060135437 0.0107344617996488 0.0109457473038747 18.6726112053623 18.6594429895553 2456272.966321606 0.228811870688768 5260.4867323033 10.799842761489 0.123509688958549 242.638730617486 T 5 CATAB v2.0g-lin.ifort 2021-Apr-15 07:19:34 2021-Apr-15 07:19
2089-Nov-30 07:06 4_04:34 Earth 0.226034949262667 0.213157207890842 0.238927794987205 25.7774589027821 25.7770016035085 2484385.795916978 6034.28394119851 649110.395274826 627.631155281545 -8.15636308606845 7226.96386091325 T 5 CATAB v2.0g-lin.ifort 2021-Apr-15 07:19:34 2021-Apr-15 07:19
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Close-Approach Data ]
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