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379938 (2012 LW9)
Classification: Outer Main-belt Asteroid          SPK-ID: 2379938
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 12 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1851605311313607 7.5089e-08  
a 3.239682275533963 6.1236e-08 au
q 2.639820984699239 2.2639e-07 au
i 21.46400194020666 1.6667e-05 deg
node 196.6364425699744 1.7591e-05 deg
peri 114.5356241982584 4.6945e-05 deg
M 94.03718319285561 4.2115e-05 deg
tp 2458444.148622611414
(2018-Nov-21.64862261)
0.00024469 TDB
period 2129.864900877927
5.83
6.0387e-05
1.653e-07
d
yr
n .1690248052125788 4.7923e-09 deg/d
Q 3.839543566368687 7.2574e-08 au
  Orbit Determination Parameters
   # obs. used (total)      95  
   data-arc span      4957 days (13.57 yr)  
   first obs. used      2006-05-04  
   last obs. used      2019-11-29  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .6756  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-12 18:00:41  

Additional Information
 Earth MOID = 1.7078 au 
 Jupiter MOID = 1.92008 au 
 T_jup = 3.049 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457678.5 (2016-Oct-17.0) TDB
Reference: JPL 12 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1880112693850071 7.5972e-08  
q 2.631405954017316 2.2997e-07 au
tp 2458441.053633890993
(2018-Nov-18.55363389)
0.00023983 TDB
node 196.6711202760486 1.758e-05 deg
peri 114.179723283936 4.6223e-05 deg
i 21.47075762479585 1.6674e-05 deg
  Orbit Determination Parameters
   # obs. used (total)      95  
   data-arc span      4957 days (13.57 yr)  
   first obs. used      2006-05-04  
   last obs. used      2019-11-29  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .6756  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-12 18:00:41  

Additional Information
 Jupiter MOID = 1.92008 au 
 T_jup = 3.049 
Orbit Covariance (6×6)
  e q tp node peri i
e 5.771719163751849E-15 -1.713539765017047E-14 1.006809687125079E-11 7.640044531223718E-15 1.569882436221274E-12 6.623536959818213E-15
q -1.713539765017047E-14 5.288465684114168E-14 -2.908765079595628E-11 -2.555671533543837E-14 -4.65730176720746E-12 -2.526088027667296E-14
tp 1.006809687125079E-11 -2.908765079595628E-11 5.751772785669394E-8 3.490725295240763E-11 1.020306062276058E-8 1.210300076111338E-10
node 7.640044531223718E-15 -2.555671533543837E-14 3.490725295240763E-11 3.090555757203038E-10 -2.817498138921979E-10 3.979102032394353E-11
peri 1.569882436221274E-12 -4.65730176720746E-12 1.020306062276058E-8 -2.817498138921979E-10 2.136526484337637E-9 -1.657451364669806E-11
i 6.623536959818213E-15 -2.526088027667296E-14 1.210300076111338E-10 3.979102032394353E-11 -1.657451364669806E-11 2.780061061424056E-10

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 16.5   n/a MPO455734  

379938 (2012 LW9)          Discovered 2012-Apr-21 by Mt. Lemmon Survey at Mount Lemmon
Reference: Last Updated: 2013-11-20

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