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392227 (2009 VK8)
Classification: Jupiter Trojan          SPK-ID: 2392227
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 7 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .0775324658582382 1.0477e-07  
a 5.277313273955182 5.3449e-07 au
q 4.868150162719025 8.276e-07 au
i 6.035981557779727 1.3247e-05 deg
node 245.2969610240171 0.00015585 deg
peri 209.4997689482309 0.00024617 deg
M 269.2529561611871 0.00021176 deg
tp 2460116.714670248767
(2023-Jun-21.21467025)
0.00275 TDB
period 4428.103266959411
12.12
0.00067272
1.842e-06
d
yr
n .08129891700723517 1.2351e-08 deg/d
Q 5.686476385191338 5.7593e-07 au
  Orbit Determination Parameters
   # obs. used (total)      59  
   data-arc span      4015 days (10.99 yr)  
   first obs. used      2008-09-28  
   last obs. used      2019-09-26  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .66029  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Nov-08 13:03:38  

Additional Information
 Earth MOID = 3.88648 au 
 Jupiter MOID = .147294 au 
 T_jup = 2.983 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457059.5 (2015-Feb-06.0) TDB
Reference: JPL 7 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .07834945513186005 1.0411e-07  
q 4.855621128599975 8.1538e-07 au
tp 2455703.039861947665
(2011-May-21.53986195)
0.0021706 TDB
node 245.3095498035019 0.00015577 deg
peri 210.0435771976866 0.00024484 deg
i 6.039919876100325 1.3261e-05 deg
  Orbit Determination Parameters
   # obs. used (total)      59  
   data-arc span      4015 days (10.99 yr)  
   first obs. used      2008-09-28  
   last obs. used      2019-09-26  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .66029  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Nov-08 13:03:38  

Additional Information
 Jupiter MOID = .147294 au 
 T_jup = 2.983 
Orbit Covariance (6×6)
  e q tp node peri i
e 1.083869864105328E-14 -6.876478293946066E-14 -3.731022839992242E-11 3.140937359849107E-14 -3.410232006685307E-12 -3.816768044911919E-15
q -6.876478293946066E-14 6.648467254006839E-13 1.019732121359589E-9 -5.994682531228971E-13 9.272561852687634E-11 1.230326089441683E-13
tp -3.731022839992242E-11 1.019732121359589E-9 4.711687929214502E-6 -2.028331320242967E-9 4.104864473912448E-7 4.200053146693108E-10
node 3.140937359849107E-14 -5.994682531228971E-13 -2.028331320242967E-9 2.42642547702564E-8 -2.43075824398386E-8 -6.94706609664835E-10
peri -3.410232006685307E-12 9.272561852687634E-11 4.104864473912448E-7 -2.43075824398386E-8 5.994622694646978E-8 7.281386511703973E-10
i -3.816768044911919E-15 1.230326089441683E-13 4.200053146693108E-10 -6.94706609664835E-10 7.281386511703973E-10 1.758600615283712E-10

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

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 14.3   n/a MPO494987  

392227 (2009 VK8)          Discovered 2009-Nov-08 by Mt. Lemmon Survey at Mount Lemmon
Reference: Last Updated: 2014-04-17

Alternate Designations
 2009 VK8 = 2008 SW228 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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