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JPL Small-Body Database Browser
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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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For accurate long-term ephemerides, please instead use our Horizons system.This orbit viewer was implemented using two-body methods, and hence should not be used for determining accurate long-term trajectories (over several years or decades) or planetary encounter circumstances.


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Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 16 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2046209861279509 1.0314e-07  
a 2.613720042182087 4.3597e-08 au
q 2.078898069688399 2.9659e-07 au
i 13.72469353376265 1.0327e-05 deg
node 220.39460253 2.5886e-05 deg
peri 31.69089921604941 4.5833e-05 deg
M 318.5298230898622 4.0599e-05 deg
tp 2459178.295357319662
(2020-Nov-24.79535732)
0.00017772 TDB
period 1543.430325213576
4.23
3.8617e-05
1.057e-07
d
yr
n .2332466805394562 5.8359e-09 deg/d
Q 3.148542014675776 5.2518e-08 au
  Orbit Determination Parameters
   # obs. used (total)      198  
   data-arc span      5740 days (15.72 yr)  
   first obs. used      2004-08-09  
   last obs. used      2020-04-27  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .53543  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-May-22 00:31:23  

Additional Information
 Earth MOID = 1.07802 au 
 Jupiter MOID = 1.90704 au 
 T_jup = 3.339 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457607.5 (2016-Aug-07.0) TDB
Reference: JPL 16 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2044076798215757 1.0352e-07  
q 2.079697690646819 2.9784e-07 au
tp 2457633.085064865068
(2016-Sep-01.58506487)
0.00014707 TDB
node 220.41158936082 2.5882e-05 deg
peri 31.42181701653991 4.5779e-05 deg
i 13.72500301633786 1.0328e-05 deg
  Orbit Determination Parameters
   # obs. used (total)      198  
   data-arc span      5740 days (15.72 yr)  
   first obs. used      2004-08-09  
   last obs. used      2020-04-27  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .53543  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-May-22 00:31:23  

Additional Information
 Jupiter MOID = 1.90704 au 
 T_jup = 3.339 
Orbit Covariance (6×6)
  e q tp node peri i
e 1.071608508891121E-14 -3.074156943507616E-14 -1.196657427217445E-11 1.106396308972058E-13 -2.874586033687647E-12 -1.190604356593418E-13
q -3.074156943507616E-14 8.870896200242134E-14 3.506495091714775E-11 -3.150209260623778E-13 8.431876734664876E-12 3.455172688858244E-13
tp -1.196657427217445E-11 3.506495091714775E-11 2.163023300281808E-8 -1.196830059696505E-10 5.567531140532838E-9 1.683083040838431E-10
node 1.106396308972058E-13 -3.150209260623778E-13 -1.196830059696505E-10 6.698547316388355E-10 -6.775761996112741E-10 -1.363180354263604E-10
peri -2.874586033687647E-12 8.431876734664876E-12 5.567531140532838E-9 -6.775761996112741E-10 2.095705883337231E-9 1.735220736147138E-10
i -1.190604356593418E-13 3.455172688858244E-13 1.683083040838431E-10 -1.363180354263604E-10 1.735220736147138E-10 1.066694462644902E-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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