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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

[ 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 1.95183859261594 1.95183444811464 1.95184273729187 4.05601202056712 3.9475702407534 2421211.940034599 6.95229130819523 973.53688647417 33.3238293968793 -78.4209006586779 1295876.29548042 T 16 CATAB v2.0f-lin.ifort 2020-May-22 00:31:25 2020-May-22 00:31
1989-Feb-12 05:54 00:02 Jupiter 1.93537611142983 1.93537538762788 1.93537683523782 3.70653824021694 3.58651925872848 2447569.745920741 2.05115403459229 389.809553013586 30.8202211670488 87.1083062957801 1307848.03734619 T 16 CATAB v2.0f-lin.ifort 2020-May-22 00:31:25 2020-May-22 00:31
2048-Feb-04 03:14 00:02 Jupiter 1.89103332810674 1.89103220741611 1.89103444880168 3.86414526069911 3.74643674103023 2469110.634574665 2.0440917340945 279.55235996286 45.9920455815148 85.0551826726602 1643583.4379091 T 16 CATAB v2.0f-lin.ifort 2020-May-22 00:31:25 2020-May-22 00:31
2107-Jan-27 22:37 00:06 Jupiter 1.90564676228498 1.90564580191346 1.90564772271879 3.99503668204956 3.88218461902328 2490652.442294483 6.03860193328881 877.717937735994 33.3463664254742 -88.0412926197236 1429580.22791312 T 16 CATAB v2.0f-lin.ifort 2020-May-22 00:31:25 2020-May-22 00:31
2166-Jan-17 21:45 00:10 Jupiter 1.9761163050826 1.9761118332038 1.97612077731636 4.11773422180891 4.0122905353558 2512192.406158832 10.2616164474341 1378.42237887867 34.8887653215214 -80.9723041583703 1398409.01444835 T 16 CATAB v2.0f-lin.ifort 2020-May-22 00:31:25 2020-May-22 00:31
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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