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(2012 XP55)
Classification: Apollo [NEO]          SPK-ID: 3619734
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 2456273.5 (2012-Dec-12.0) TDB
Reference: JPL 11 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .5977278110512413 0.0018458  
a 1.94362403596455 0.0077714 au
q .7818658954408806 0.00046129 au
i 2.796533098928562 0.0082909 deg
node 80.23509751694574 0.0032961 deg
peri 77.01018742283674 0.012507 deg
M 339.6082652782308 0.13479 deg
tp 2456329.561987541747
(2013-Feb-06.06198754)
0.034331 TDB
period 989.7301916880675
2.71
5.936
0.01625
d
yr
n .3637354937975469 0.0021815 deg/d
Q 3.10538217648822 0.012417 au
  Orbit Determination Parameters
   # obs. used (total)      46  
   data-arc span      15 days  
   first obs. used      2012-12-08  
   last obs. used      2012-12-23  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      8  
   norm. resid. RMS      .47053  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-15 07:19:34  

Additional Information
 Earth MOID = .0114781 au 
 Jupiter MOID = 1.89512 au 
 T_jup = 3.656 
[ 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 23.9   n/a MPO252140  

[ 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
1937-Jun-26 15:58 5_18:23 Mars 0.0665751681359114 0.0255410317281386 0.155420265805194 16.6639613330711 16.6637032740565 2428711.165290488 8303.03680209866 4579021.89098844 23.5781449964729 22.5602687614779 164685.509441785 T 11 CATAB v2.0g-lin.ifort 2021-Apr-15 07:19:34 2021-Apr-15 07:19
2012-Dec-27 09:46 < 00:01 Earth 0.023527479951052 0.0233181345375465 0.0237368211728587 14.0547123332668 14.0466522499518 2456288.906627860 0.582873386250648 10427.3456321744 15.1364757880636 0.0854456164475499 244.179136667039 T 11 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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