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379928 (2012 KW44)
Classification: Main-belt Asteroid          SPK-ID: 2379928
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 17 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2046209867158173 1.031e-07  
a 2.613720043594363 4.3532e-08 au
q 2.078898069275176 2.9653e-07 au
i 13.7246936815354 1.0315e-05 deg
node 220.3946029103648 2.586e-05 deg
peri 31.69089875118732 4.5826e-05 deg
M 318.5298227380193 4.0592e-05 deg
tp 2459178.295358972223
(2020-Nov-24.79535897)
0.00017769 TDB
period 1543.430326464523
4.23
3.8559e-05
1.056e-07
d
yr
n .2332466803504103 5.8271e-09 deg/d
Q 3.148542017913551 5.2439e-08 au
  Orbit Determination Parameters
   # obs. used (total)      202  
   data-arc span      5766 days (15.79 yr)  
   first obs. used      2004-08-09  
   last obs. used      2020-05-23  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .54495  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-12 18:00:45  

Additional Information
 Earth MOID = 1.07802 au 
 Jupiter MOID = 1.90704 au 
 T_jup = 3.339 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457621.5 (2016-Aug-21.0) TDB
Reference: JPL 17 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2044017875690073 1.0349e-07  
q 2.079696410311832 2.9777e-07 au
tp 2457633.090275491392
(2016-Sep-01.59027549)
0.00014705 TDB
node 220.4116425016124 2.5855e-05 deg
peri 31.42362997343359 4.5774e-05 deg
i 13.72503039813008 1.0316e-05 deg
  Orbit Determination Parameters
   # obs. used (total)      202  
   data-arc span      5766 days (15.79 yr)  
   first obs. used      2004-08-09  
   last obs. used      2020-05-23  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .54495  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-12 18:00:45  

Additional Information
 Jupiter MOID = 1.90704 au 
 T_jup = 3.339 
Orbit Covariance (6×6)
  e q tp node peri i
e 1.070946213361649E-14 -3.07252735963384E-14 -1.196138359631496E-11 1.125857190839798E-13 -2.874465947356218E-12 -1.182017392688733E-13
q -3.07252735963384E-14 8.866427072241775E-14 3.504876396851894E-11 -3.207591351408203E-13 8.432238242634175E-12 3.429683547979506E-13
tp -1.196138359631496E-11 3.504876396851894E-11 2.162441618531973E-8 -1.227995443026262E-10 5.568876974975918E-9 1.669793746115386E-10
node 1.125857190839798E-13 -3.207591351408203E-13 -1.227995443026262E-10 6.685026425376416E-10 -6.770179105305306E-10 -1.368892515825704E-10
peri -2.874465947356218E-12 8.432238242634175E-12 5.568876974975918E-9 -6.770179105305306E-10 2.095297319055017E-9 1.737453278593162E-10
i -1.182017392688733E-13 3.429683547979506E-13 1.669793746115386E-10 -1.368892515825704E-10 1.737453278593162E-10 1.064270927807949E-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 MPO427888  

379928 (2012 KW44)          Discovered 2009-Oct-18 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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