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JPL Small-Body Database Browser
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(2012 XB112)
Classification: Apollo [NEO]          SPK-ID: 3620672
[ 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.


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Orbital Elements at Epoch 2458600.5 (2019-Apr-27.0) TDB
Reference: JPL 20 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1446214998101605 2.2376e-06  
a 1.028875863638693 9.1667e-07 au
q .8800782931207909 3.0241e-06 au
i 1.321926423403206 8.0807e-05 deg
node 76.87102686757245 0.00031509 deg
peri 88.83578947715456 0.00090191 deg
M 333.1476505981838 0.0015251 deg
tp 2458628.932999967350
(2019-May-25.43299997)		 0.0016526 TDB
period 381.1912259548361
1.04		 0.00050943
1.395e-06		 d
yr
n .944407886352172 1.2621e-06 deg/d
Q 1.177673434156595 1.0492e-06 au
   Orbit Determination Parameters
   # obs. used (total)      78  
   # delay obs. used      0  
   # Doppler obs. used      1  
   data-arc span      3 days  
   first obs. used      2012-12-11  
   last obs. used      2012-12-14  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      3  
   norm. resid. RMS      .42236  
   source      ORB  
   producer      Giorgini  
   solution date      2017-May-08 13:01:46  

Additional Information
 Earth MOID = .000875043 au 
 Jupiter MOID = 3.78955 au 
 T_jup = 5.937 
[ hide covariance matrix ]
Orbital Elements at Epoch 2456274.5 (2012-Dec-13.0) TDB
Reference: JPL 20 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1454375055408628 2.1759e-06  
q .8793577215223076 1.5753e-06 au
tp 2456344.856340490985
(2013-Feb-21.35634049)		 9.955e-05 TDB
node 79.94111640130573 9.1399e-06 deg
peri 83.94715448957828 0.00011579 deg
i 2.376206942048092 4.3628e-05 deg
   Orbit Determination Parameters
   # obs. used (total)      78  
   # delay obs. used      0  
   # Doppler obs. used      1  
   data-arc span      3 days  
   first obs. used      2012-12-11  
   last obs. used      2012-12-14  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      3  
   norm. resid. RMS      .42236  
   source      ORB  
   producer      Giorgini  
   solution date      2017-May-08 13:01:46  

Additional Information
 Jupiter MOID = 3.78955 au 
 T_jup = 5.937 
Orbit Covariance (6×6)
  e q tp node peri i
e 4.734489101845477E-12 -3.408886113156085E-12 -1.799514839695135E-10 7.854918686833372E-12 1.87651074289768E-10 9.068271606104607E-11
q -3.408886113156085E-12 2.481446757442523E-12 1.20461943854539E-10 -5.525112922948366E-12 -1.477450693105932E-10 -6.515994275812981E-11
tp -1.799514839695135E-10 1.20461943854539E-10 9.91027068846031E-9 -3.373701504720811E-10 -2.877312582250904E-9 -3.481087265499223E-9
node 7.854918686833372E-12 -5.525112922948366E-12 -3.373701504720811E-10 8.353772703864138E-11 1.85799547952573E-10 2.530487445437543E-10
peri 1.87651074289768E-10 -1.477450693105932E-10 -2.877312582250904E-9 1.85799547952573E-10 1.340760478733226E-8 3.440942124637557E-9
i 9.068271606104607E-11 -6.515994275812981E-11 -3.481087265499223E-9 2.530487445437543E-10 3.440942124637557E-9 1.903406876855377E-9

[ 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 29.9   n/a MPO247345  
diameter diameter 0.0025 km 0.0005 n/a Based on Goldstone echo band-width of 3-4 Hz and light-curve rotational period of 2.6 minutes from light-curves.
rotation period rot_per 0.043333 h n/a n/a 2.6 minute rotation period from lightcurves by Bill Ryan

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