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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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Orbit Diagram
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Note: This Java-based orbit viewer will eventually be retired.

Note: Make sure you have Java enabled on your browser to see the applet. This applet is provided as a 3D orbit visualization tool. The applet 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. For accurate long-term ephemerides, please instead use our Horizons system.

Note: If the applet is not working, here are some notes that might help.
Orbit Viewer

Additional Notes: the orbits shown in the applet are color coded. The planets are white lines, and the asteroid/comet is a blue line. The bright white line indicates the portion of the orbit that is above the ecliptic plane, and the darker portion is below the ecliptic plane. Likewise for the asteroid/comet orbit, the light blue indicates the portion above the ecliptic plane, and the dark blue the portion below the ecliptic plane.

Orbit Viewer applet originally written and kindly provided by Osamu Ajiki (AstroArts), and further modified by Ron Baalke (JPL).


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

[ hide close-approach data ]
Close-Approach Data   ...sorted by Date/Time (TDB)
Date/Time (TDB) Time Uncertainty
(days_HH:MM)
Body Nominal Distance (au) Minimum Distance (au) Maximum Distance (au) V-relative (km/s) V-infinity (km/s) JD (TDB) Time Uncertainty (minutes) Semi-major axis (km) Semi-minor axis (km) range-LOV angle (deg) N-sigma BP Orbit Ref. Reference Modified
1916-Dec-14 10:34 00:07 Jupiter 1.9518386229918 1.95183448109164 1.95184276506626 4.05601207357446 3.94757029692771 2421211.939980295 6.94365789783468 972.326266150069 33.1875650938759 -78.4125141305716 1297797.20233424 T 17 CATAB v2.0f-lin.ifort 2020-Nov-12 18:00:46 2020-Nov-12 18:00
1989-Feb-12 05:54 00:02 Jupiter 1.93537610052555 1.93537537903004 1.935376822027 3.70653835571946 3.58651937740864 2447569.745898735 2.04916241817561 389.77058713855 30.6886055534637 87.1139725594815 1309957.09951197 T 17 CATAB v2.0f-lin.ifort 2020-Nov-12 18:00:46 2020-Nov-12 18:00
2048-Feb-04 03:14 00:02 Jupiter 1.89103332696147 1.89103220653097 1.89103444739628 3.86414530149966 3.74643678304027 2469110.634585801 2.04040934451496 278.796536766888 45.9360642736437 85.0204390953327 1650613.53534222 T 17 CATAB v2.0f-lin.ifort 2020-Nov-12 18:00:46 2020-Nov-12 18:00
2107-Jan-27 22:37 00:06 Jupiter 1.90564674438552 1.90564578945726 1.90564769937563 3.99503662314971 3.88218455733584 2490652.442348903 6.02934047408696 876.210577376552 33.2147866895079 -88.0523198433704 1432963.08133499 T 17 CATAB v2.0f-lin.ifort 2020-Nov-12 18:00:46 2020-Nov-12 18:00
2166-Jan-17 21:45 00:10 Jupiter 1.976116248196 1.9761117865471 1.97612071019892 4.11773421205858 4.01229052227393 2512192.406224277 10.2465222844361 1376.41143351403 34.7573235093474 -80.9788765833809 1401309.77401871 T 17 CATAB v2.0f-lin.ifort 2020-Nov-12 18:00:46 2020-Nov-12 18:00
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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