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JPL Small-Body Database Browser
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(2018 XC)
Classification: Aten [NEO]          SPK-ID: 3836709
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 4 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .4035313726729614 0.00046239  
a .7899443933563706 4.1766e-05 au
q .4711770479699646 0.00039014 au
i 21.32835441904718 0.043421 deg
node 69.82710284864044 0.00035878 deg
peri 212.213834671156 0.011506 deg
M 319.8753691160794 0.053528 deg
tp 2458629.082601730367
(2019-May-25.58260173)
0.035871 TDB
period 256.444393288006
0.70
0.020338
5.568e-05
d
yr
n 1.403813104994241 0.00011133 deg/d
Q 1.108711738742777 5.862e-05 au
  Orbit Determination Parameters
   # obs. used (total)      48  
   data-arc span      7 days  
   first obs. used      2018-12-03  
   last obs. used      2018-12-10  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      6  
   norm. resid. RMS      .39412  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Jul-27 14:01:26  

Additional Information
 Earth MOID = .0133414 au 
 Jupiter MOID = 4.02626 au 
 T_jup = 7.251 
[ hide covariance matrix ]
Orbital Elements at Epoch 2458457.5 (2018-Dec-05.0) TDB
Reference: JPL 4 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .4036178256279865 0.00046184  
q .4711045896918238 0.00038954 au
tp 2458372.658279332210
(2018-Sep-11.15827933)
0.05603 TDB
node 69.83131114475954 0.00033552 deg
peri 212.2184552244372 0.011484 deg
i 21.33600583578741 0.0434 deg
  Orbit Determination Parameters
   # obs. used (total)      48  
   data-arc span      7 days  
   first obs. used      2018-12-03  
   last obs. used      2018-12-10  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      6  
   norm. resid. RMS      .39412  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Jul-27 14:01:26  

Additional Information
 Jupiter MOID = 4.02626 au 
 T_jup = 7.251 
Orbit Covariance (6×6)
  e q tp node peri i
e 2.132956359400989E-7 -1.799049004361388E-7 2.587663408716857E-5 1.545202667064134E-7 5.299001413746017E-6 2.004346942372545E-5
q -1.799049004361388E-7 1.517428307661462E-7 -2.182535726194615E-5 -1.303135441117979E-7 -4.468879543774357E-6 -1.690565940019224E-5
tp 2.587663408716857E-5 -2.182535726194615E-5 .003139414834780736 1.875235049761675E-5 .0006430230470114135 .002431631671514538
node 1.545202667064134E-7 -1.303135441117979E-7 1.875235049761675E-5 1.125767159087701E-7 3.846702320162241E-6 1.45196268472618E-5
peri 5.299001413746017E-6 -4.468879543774357E-6 .0006430230470114135 3.846702320162241E-6 .0001318830307892814 .0004979599698738441
i 2.004346942372545E-5 -1.690565940019224E-5 .002431631671514538 1.45196268472618E-5 .0004979599698738441 .001883558188796048

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 26.0   .40491 E2018Y42 autocmod 2.6q

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Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Close-Approach Data ]
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