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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 2458600.5 (2019-Apr-27.0) TDB
Reference: JPL 11 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1850532611284786 7.568e-08  
a 3.238357804809633 6.189e-08 au
q 2.63908913232875 2.2954e-07 au
i 21.4683871191505 1.6967e-05 deg
node 196.6406635109758 1.8058e-05 deg
peri 114.414848674886 4.7481e-05 deg
M 26.5224141189093 4.1686e-05 deg
tp 2458443.681886140531
(2018-Nov-21.18188614)
0.00024532 TDB
period 2128.558913841833
5.83
6.102e-05
1.671e-07
d
yr
n .1691285111532274 4.8485e-09 deg/d
Q 3.837626477290516 7.3343e-08 au
  Orbit Determination Parameters
   # obs. used (total)      92  
   data-arc span      4926 days (13.49 yr)  
   first obs. used      2006-05-04  
   last obs. used      2019-10-29  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .64745  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Nov-08 12:34:32  

Additional Information
 Earth MOID = 1.70648 au 
 Jupiter MOID = 1.92045 au 
 T_jup = 3.050 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457592.5 (2016-Jul-23.0) TDB
Reference: JPL 11 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1885760307484914 7.6896e-08  
q 2.628310008807585 2.3436e-07 au
tp 2458440.717856733028
(2018-Nov-18.21785673)
0.00023895 TDB
node 196.6818136190845 1.8064e-05 deg
peri 114.2326634467355 4.6594e-05 deg
i 21.46508605830629 1.6969e-05 deg
  Orbit Determination Parameters
   # obs. used (total)      92  
   data-arc span      4926 days (13.49 yr)  
   first obs. used      2006-05-04  
   last obs. used      2019-10-29  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .64745  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Nov-08 12:34:32  

Additional Information
 Jupiter MOID = 1.92045 au 
 T_jup = 3.050 
Orbit Covariance (6×6)
  e q tp node peri i
e 5.913002699451398E-15 -1.767400344425038E-14 1.023347014165861E-11 -2.359648170083898E-15 1.631947235635723E-12 1.111663624033899E-14
q -1.767400344425038E-14 5.492467730971894E-14 -2.980009505562568E-11 9.211515689709954E-15 -4.904922010952442E-12 -3.6025561928525E-14
tp 1.023347014165861E-11 -2.980009505562568E-11 5.709743430523666E-8 -1.002435178584022E-11 1.020692091376232E-8 1.583822107205514E-10
node -2.359648170083898E-15 9.211515689709954E-15 -1.002435178584022E-11 3.263034034170183E-10 -3.063364645301577E-10 2.669592920699473E-11
peri 1.631947235635723E-12 -4.904922010952442E-12 1.020692091376232E-8 -3.063364645301577E-10 2.171001085429961E-9 1.992601466336148E-12
i 1.111663624033899E-14 -3.6025561928525E-14 1.583822107205514E-10 2.669592920699473E-11 1.992601466336148E-12 2.879624198329045E-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

[ show close-approach data ]
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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