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JPL Small-Body Database Browser
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71203 (1999 XK242)
Classification: Main-belt Asteroid          SPK-ID: 2071203
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | 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 17 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .08412680303841878 5.1306e-08  
a 2.688929582043753 1.6391e-08 au
q 2.46271853271098 1.3647e-07 au
i 10.48176005306743 7.0566e-06 deg
node 16.7846503473679 2.4006e-05 deg
peri 45.19203968282371 4.8292e-05 deg
M 176.4721896183571 3.9934e-05 deg
tp 2457811.019615478784
(2017-Feb-26.51961548)
0.00017797 TDB
period 1610.525369704333
4.41
1.4726e-05
4.032e-08
d
yr
n .2235295430745623 2.0438e-09 deg/d
Q 2.915140631376525 1.777e-08 au
  Orbit Determination Parameters
   # obs. used (total)      758  
   data-arc span      8649 days (23.68 yr)  
   first obs. used      1994-10-28  
   last obs. used      2018-07-03  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .52093  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Jul-13 04:32:25  

Additional Information
 Earth MOID = 1.48527 au 
 Jupiter MOID = 2.37362 au 
 T_jup = 3.344 
[ show covariance matrix ]

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

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 14.9   n/a MPO302442  

71203 (1999 XK242)          Discovered 1999-Dec-12 by LINEAR at Socorro
Reference: 20031109/Numbers.arcLast Updated: 2004-04-19

[ show close-approach data ]
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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