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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 ]

[ show orbit diagram ]
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 
[ hide covariance matrix ]
Orbital Elements at Epoch 2456507.5 (2013-Aug-03.0) TDB
Reference: JPL 17 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .08597726773173708 5.1453e-08  
q 2.455568018204733 1.3711e-07 au
tp 2456202.674880473300
(2012-Oct-02.17488047)
0.00017284 TDB
node 16.82156561681786 2.3985e-05 deg
peri 45.03091254205451 4.7418e-05 deg
i 10.49041112546104 7.0613e-06 deg
  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
 Jupiter MOID = 2.37362 au 
 T_jup = 3.344 
Orbit Covariance (6×6)
  e q tp node peri i
e 2.647409918463971E-15 -7.012778091178859E-15 -4.580346593150698E-12 6.148146043056185E-15 -1.111478794336508E-12 -2.972110422291345E-15
q -7.012778091178859E-15 1.879986537065642E-14 1.226226036849822E-11 -1.796679625195793E-14 2.983630512792006E-12 8.412823133921087E-15
tp -4.580346593150698E-12 1.226226036849822E-11 2.98720938067439E-8 -1.902301456721598E-11 7.081398435624706E-9 -5.433103956641995E-12
node 6.148146043056185E-15 -1.796679625195793E-14 -1.902301456721598E-11 5.752712582333329E-10 -5.695930635744571E-10 -2.134719458589049E-11
peri -1.111478794336508E-12 2.983630512792006E-12 7.081398435624706E-9 -5.695930635744571E-10 2.248475356819597E-9 1.982671909168833E-11
i -2.972110422291345E-15 8.412823133921087E-15 -5.433103956641995E-12 -2.134719458589049E-11 1.982671909168833E-11 4.986252339968822E-11

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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