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442725 (2012 VK39)
Classification: Main-belt Asteroid          SPK-ID: 2442725
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 17 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1269202373552462 9.5164e-08  
a 2.587431897490818 5.4013e-08 au
q 2.259034426920748 2.7206e-07 au
i 15.50048429754485 1.0142e-05 deg
node 77.90401368174767 2.4017e-05 deg
peri 23.2541149006425 4.0274e-05 deg
M 269.7452568815382 3.9208e-05 deg
tp 2459381.626680420220
(2021-Jun-16.12668042)
0.00017317 TDB
period 1520.203816559458
4.16
4.7601e-05
1.303e-07
d
yr
n .2368103514006141 7.4151e-09 deg/d
Q 2.915829368060888 6.0868e-08 au
  Orbit Determination Parameters
   # obs. used (total)      124  
   data-arc span      4789 days (13.11 yr)  
   first obs. used      2006-05-26  
   last obs. used      2019-07-06  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .6145  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Sep-24 07:43:54  

Additional Information
 Earth MOID = 1.28251 au 
 Jupiter MOID = 2.31617 au 
 T_jup = 3.359 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457344.5 (2015-Nov-18.0) TDB
Reference: JPL 17 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1255097386404396 9.5012e-08  
q 2.264174641585341 2.7163e-07 au
tp 2457856.432769672171
(2017-Apr-12.93276967)
0.00014758 TDB
node 77.94326539802167 2.4032e-05 deg
peri 22.3838954942233 4.0498e-05 deg
i 15.49233011991667 1.0137e-05 deg
  Orbit Determination Parameters
   # obs. used (total)      124  
   data-arc span      4789 days (13.11 yr)  
   first obs. used      2006-05-26  
   last obs. used      2019-07-06  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .6145  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Sep-24 07:43:54  

Additional Information
 Jupiter MOID = 2.31617 au 
 T_jup = 3.359 
Orbit Covariance (6×6)
  e q tp node peri i
e 9.027287053506032E-15 -2.550481094315506E-14 -8.18176856822362E-12 -6.094161170490309E-14 -1.58960642072117E-12 3.029618170401227E-14
q -2.550481094315506E-14 7.378343128426193E-14 2.42757002669203E-11 1.751972927558325E-13 4.624160364043016E-12 -7.965889115689664E-14
tp -8.18176856822362E-12 2.42757002669203E-11 2.178010525777824E-8 2.426564236076457E-11 4.799011497044439E-9 -2.519453977481752E-11
node -6.094161170490309E-14 1.751972927558325E-13 2.426564236076457E-11 5.775310602340236E-10 -5.521296619270546E-10 -3.906770408214993E-11
peri -1.58960642072117E-12 4.624160364043016E-12 4.799011497044439E-9 -5.521296619270546E-10 1.640061327047476E-9 3.209700152314661E-11
i 3.029618170401227E-14 -7.965889115689664E-14 -2.519453977481752E-11 -3.906770408214993E-11 3.209700152314661E-11 1.027673616521904E-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 16.4   n/a MPO450446  

442725 (2012 VK39)          Discovered 2012-Nov-05 by Spacewatch at Kitt Peak
Reference: Last Updated: 2015-09-02

Alternate Designations
 2012 VK39 = 2010 KQ129 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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