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392174 (2009 KM9)
Classification: Main-belt Asteroid          SPK-ID: 2392174
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 15 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .05245170739741934 5.4165e-08  
a 2.97689599470728 5.5783e-08 au
q 2.820752717040344 1.7778e-07 au
i 8.767264590416987 8.1999e-06 deg
node 211.9070237365604 3.5896e-05 deg
peri 98.33897520340672 9.2104e-05 deg
M 344.5600807743559 8.6721e-05 deg
tp 2459080.961188392801
(2020-Aug-19.46118839)
0.00045299 TDB
period 1876.04788587876
5.14
5.2732e-05
1.444e-07
d
yr
n .1918927564214984 5.3937e-09 deg/d
Q 3.133039272374216 5.8709e-08 au
  Orbit Determination Parameters
   # obs. used (total)      177  
   data-arc span      3713 days (10.17 yr)  
   first obs. used      2009-04-30  
   last obs. used      2019-06-30  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .58879  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-26 04:43:02  

Additional Information
 Earth MOID = 1.82439 au 
 Jupiter MOID = 2.00787 au 
 T_jup = 3.241 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457533.5 (2016-May-25.0) TDB
Reference: JPL 15 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .05201359407200341 5.4347e-08  
q 2.819627103444933 1.7659e-07 au
tp 2457220.652376837151
(2015-Jul-17.15237684)
0.00043676 TDB
node 211.9915178574183 3.5828e-05 deg
peri 100.8314206560116 9.2904e-05 deg
i 8.777471142499058 8.2094e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      177  
   data-arc span      3713 days (10.17 yr)  
   first obs. used      2009-04-30  
   last obs. used      2019-06-30  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .58879  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-26 04:43:02  

Additional Information
 Jupiter MOID = 2.00787 au 
 T_jup = 3.241 
Orbit Covariance (6×6)
  e q tp node peri i
e 2.953581125092176E-15 -9.185694959641812E-15 1.427143072016426E-12 -1.116780742518903E-14 4.001144034294246E-13 -4.813615683223163E-15
q -9.185694959641812E-15 3.118431717513808E-14 3.912383622102998E-12 1.777542230827384E-14 4.634740742846091E-13 1.871985971549832E-14
tp 1.427143072016426E-12 3.912383622102998E-12 1.907552793178776E-7 -2.480491871807387E-10 3.744654828676578E-8 4.184898948316831E-12
node -1.116780742518903E-14 1.777542230827384E-14 -2.480491871807387E-10 1.283650392879812E-9 -1.316811322866193E-9 3.514276938568723E-11
peri 4.001144034294246E-13 4.634740742846091E-13 3.744654828676578E-8 -1.316811322866193E-9 8.631119717975333E-9 -3.392187877373265E-11
i -4.813615683223163E-15 1.871985971549832E-14 4.184898948316831E-12 3.514276938568723E-11 -3.392187877373265E-11 6.739480753677595E-11

Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 16.2   n/a MPO437605  

392174 (2009 KM9)          Discovered 2009-Apr-30 by Spacewatch at Kitt Peak
Reference: Last Updated: 2014-04-17
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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