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(2012 XL55)
Classification: Apollo [NEO]          SPK-ID: 3619730
[ 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 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 
[ 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 27.0   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 11:11 < 00:01 Earth 0.0108860124448948 0.0107836255734414 0.0109883966161835 18.7522199742502 18.7391630145135 2456272.966289991 0.227520502582018 5098.38397620377 10.8353603260749 0.124277883203327 251.744899695905 T 4 CATAB v2.0e-lin.ifort 2017-Nov-29 08:51:29 2018-Dec-11 15:57
2056-Jun-19 18:40 9_23:05 Earth 0.202392182972098 0.00520637201684539 0.400212238970178 24.9459659717177 24.9454382282209 2472169.277916472 14344.821162408 9864870.64348164 722.603768135531 0.758838352924769 522.019566368666 T 4 CATAB v2.0e-lin.ifort 2017-Nov-29 08:51:29 2018-Dec-11 15:57
[ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Close-Approach Data ]
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